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Howard An

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Michael B Ellman; Howard S An; Jennifer An; Steven S An; Di Chen; Gabriella Cs-Szabo; Teju Dittakavi; Ranjan KC; Jae-Sung Kim; Su-Gwan Kim; Xin Li; Andre J van Wijnen; Guozhi Xiao; Hee-Jeong Im
Toll-like receptor adaptor signaling molecule MyD88 on intervertebral disk homeostasis: in vitro, ex vivo studies.
Joshua J Jacobs; Howard S An
Commentary: Total disc arthroplasty and the bearing surface debate.
Muhammad Qasim; Raghu N Natarajan; Howard S An; Gunnar B J Andersson
Initiation and progression of mechanical damage in the intervertebral disc under cyclic loading using continuum damage mechanics methodology: A finite element study.

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2012: Michael B Ellman; Howard S An; Jennifer An; Steven S An; Di Chen; Gabriella Cs-Szabo; Teju Dittakavi; Ranjan KC; Jae-Sung Kim; Su-Gwan Kim; Xin Li; Andre J van Wijnen; Guozhi Xiao; Hee-Jeong Im
Toll-like receptor adaptor signaling molecule MyD88 on intervertebral disk homeostasis: in vitro, ex vivo studies.
Gene 2012;505(2):283-90.
2012: Joshua J Jacobs; Howard S An
Commentary: Total disc arthroplasty and the bearing surface debate.
The spine journal : official journal of the North American Spine Society 2012;12(8):702-4.
2012: Muhammad Qasim; Raghu N Natarajan; Howard S An; Gunnar B J Andersson
Initiation and progression of mechanical damage in the intervertebral disc under cyclic loading using continuum damage mechanics methodology: A finite element study.
Journal of biomechanics 2012;45(11):1934-40.
2012: Michael B Ellman; Howard S An; Doug D Buechter; Di Chen; Jae-Sung Kim; Jeffrey S Kroin; Xin Li; Bo Liu; Stephanie Morgan; Keiichi Nakayama; Dongyao Yan; Hee-Jeong Im
The pathophysiologic role of the protein kinase Cδ pathway in the intervertebral discs of rabbits and mice: in vitro, ex vivo, and in vivo studies.
Arthritis and rheumatism 2012;64(6):1950-9.
2012: Kern Singh; Howard S An; Dan K Park; Miguel A Pelton; Frank M Phillips; Edward J Goldberg
Factors affecting reoperations after anterior cervical discectomy and fusion within and outside of a Federal Drug Administration investigational device exemption cervical disc replacement trial.
The spine journal : official journal of the North American Spine Society 2012;12(5):372-8.
2011: Howard S An; Gunnar B J Andersson; Ana Chee; Gabriella Cs-Szabo; Hee-Jeong Im; Koichi Masuda; Eugene J-M A Thonar; Yejia Zhang; Young-Min Kwon
Biologic repair and regeneration of the intervertebral disk.
The Journal of the American Academy of Orthopaedic Surgeons 2011;19(7):450-2.
2011: Yejia Zhang; Ana Chee; Eugene J-M A Thonar; Howard S An
Intervertebral disk repair by protein, gene, or cell injection: a framework for rehabilitation-focused biologics in the spine.
PM & R : the journal of injury, function, and rehabilitation 2011;3(6 Suppl 1):S88-94.
2011: Jae-Sung Kim; Jeffrey S Kroin; Xin Li; Kenneth J Tuman; Andre J van Wijnen; Dongyao Yan; Howard S An; Asokumar Buvanendran; Di Chen; Hee-Jeong Im
The rat intervertebral disk degeneration pain model: relationships between biological and structural alterations and pain.
Arthritis research & therapy 2011;13(5):R165.
2011: C Y Duan; A A Espinoza Orías; S Shott; Howard S An; G B J Andersson; Jian-zhong Hu; Hong-Bin Lu; Nozomu Inoue
In vivo measurement of the subchondral bone thickness of lumbar facet joint using magnetic resonance imaging.
Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society 2011;19(1):96-102.
2010: Jae-Sung Kim; Michael B Ellman; Howard S An; Andre J van Wijnen; Jeffrey A Borgia; Hee-Jeong Im
Insulin-like growth factor 1 synergizes with bone morphogenetic protein 7-mediated anabolism in bovine intervertebral disc cells.
Arthritis and rheumatism 2010;62(12):3706-15.
2010: D Greg Anderson; Dessislava Markova; Sherrill L Adams; Maurizio Pacifici; Howard S An; Yejia Zhang
Fibronectin splicing variants in human intervertebral disc and association with disc degeneration.
Spine 2010;35(17):1581-8.
2010: Yoshihisa Otsuka; Howard S An; Ruth S Ochia; Gunnar B J Andersson; Alejandro A Espinoza Orías; Nozomu Inoue
In vivo measurement of lumbar facet joint area in asymptomatic and chronic low back pain subjects.
Spine 2010;35(8):924-8.
2010: Daniel K Park; Howard S An; Jon D Lurie; Wenyan Zhao; Anna Tosteson; Tor D Tosteson; Harry Herkowitz; Thomas Errico; James N Weinstein
Does multilevel lumbar stenosis lead to poorer outcomes?: a subanalysis of the Spine Patient Outcomes Research Trial (SPORT) lumbar stenosis study.
Spine 2010;35(4):439-46.
2009: Keizo Sugisaki; Howard S An; Alejandro A Espinoza Orías; Richard Rhim; Gunnar B J Andersson; Nozomu Inoue
In vivo three-dimensional morphometric analysis of the lumbar pedicle isthmus.
Spine 2009;34(24):2599-604.
2009: Yejia Zhang; Dessislava Markova; Hee-Jeong Im; WENYANG HU; Eugene Thonar; Tong-Chuan He; Howard S An; Frank M Phillips; D Greg Anderson
Primary bovine intervertebral disc cells transduced with adenovirus overexpressing 12 BMPs and Sox9 maintain appropriate phenotype.
American journal of physical medicine & rehabilitation / Association of Academic Physiatrists 2009;88(6):455-63.
2009: Daniel K Park; Howard S An
Problems related to cervical fusion: malalignment and nonunion.
Instructional course lectures 2009;58():737-45.
2009: Kern Singh; Koichi Masuda; Eugene Thonar; Howard S An; Gabriella Cs-Szabo
Age-related changes in the extracellular matrix of nucleus pulposus and anulus fibrosus of human intervertebral disc.
Spine 2009;34(1):10-6.
2008: Yejia Zhang; Howard S An; Chadi Tannoury; Eugene Thonar; Mitchell K Freedman; D Greg Anderson
Biological treatment for degenerative disc disease: implications for the field of physical medicine and rehabilitation.
American journal of physical medicine & rehabilitation / Association of Academic Physiatrists 2008;87(9):694-702.
2008: Michael B Ellman; Howard S An; Prasuna Muddasani; Hee-Jeong Im
Biological impact of the fibroblast growth factor family on articular cartilage and intervertebral disc homeostasis.
Gene 2008;420(1):82-9.
2008: Thomas M Turner; Robert M Urban; Kern Singh; Deborah J Hall; Susan M Renner; Tae-Hong Lim; Michael J Tomlinson; Howard S An
Vertebroplasty comparing injectable calcium phosphate cement compared with polymethylmethacrylate in a unique canine vertebral body large defect model.
The spine journal : official journal of the North American Spine Society 2008;8(3):482-7.
2008: Yejia Zhang; Frank M Phillips; Eugene Thonar; Theodore Oegema; Howard S An; Jorge A. Roman-Blas ; Tong-Chuan He; D Greg Anderson
Cell therapy using articular chondrocytes overexpressing BMP-7 or BMP-10 in a rabbit disc organ culture model.
Spine 2008;33(8):831-8.
2008: Kern Singh; Dino Samartzis; Anna L Somera; Howard S An
Cervical kyphosis and thoracic lordoscoliosis in a patient with cerebral palsy.
Orthopedics 2008;31(3):276.
2008: Kern Singh; Dino Samartzis; Ashok Biyani; Howard S An
Lumbar spinal stenosis.
The Journal of the American Academy of Orthopaedic Surgeons 2008;16(3):171-6.
2008: Raghu N Natarajan; Jamie Williams; Steven A Lavender; Howard S An; G B Anderson
Relationship between disc injury and manual lifting: a poroelastic finite element model study.
Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine 2008;222(2):195-207.
2008: Xin Li; Howard S An; Michael Ellman; Frank Phillips; Eugene Thonar; Daniel K Park; Ranjith K Udayakumar; Hee-Jeong Im
Action of fibroblast growth factor-2 on the intervertebral disc.
Arthritis research & therapy 2008;10(2):R48.
2008: Michiaki Yamada; Koji Akeda; Kunihiro Asanuma; Eugene Thonar; Howard S An; Atsumasa Uchida; Koichi Masuda
Effect of osteogenic protein-1 on the matrix metabolism of bovine tendon cells.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society 2008;26(1):42-8.
2007: Kalpa P Patel; John D Sandy; Koji Akeda; Kei Miyamoto; Takehide Chujo; Howard S An; Koichi Masuda
Aggrecanases and aggrecanase-generated fragments in the human intervertebral disc at early and advanced stages of disc degeneration.
Spine 2007;32(23):2596-603.
2007: Yejia Zhang; D Greg Anderson; Frank M Phillips; Eugene Thonar; Tong-Chuan He; Daniel Pietryla; Howard S An
Comparative effects of bone morphogenetic proteins and Sox9 overexpression on matrix accumulation by bovine anulus fibrosus cells: implications for anular repair.
Spine 2007;32(23):2515-20.
2007: Dino Samartzis; Rex A W Marco; Louis G Jenis; Nitin Khanna; Robert J Banco; Edward J Goldberg; Howard S An
Characterization of graft subsidence in anterior cervical discectomy and fusion with rigid anterior plate fixation.
American journal of orthopedics (Belle Mead, N.J.) 2007;36(8):421-7.
2007: Ruth S Ochia; Nozomu Inoue; Ryota Takatori; Gunnar B J Andersson; Howard S An
In vivo measurements of lumbar segmental motion during axial rotation in asymptomatic and chronic low back pain male subjects.
Spine 2007;32(13):1394-9.
2007: Yoshiyuki Imai; Kei Miyamoto; Howard S An; Eugene Thonar; Gunnar B J Andersson; Koichi Masuda
Recombinant human osteogenic protein-1 upregulates proteoglycan metabolism of human anulus fibrosus and nucleus pulposus cells.
Spine 2007;32(12):1303-9; discussion 1310.
2007: Yoshiyuki Imai; Masahiko Okuma; Howard S An; Koichi Nakagawa; Michiaki Yamada; Carol Muehleman; Eugene Thonar; Koichi Masuda
Restoration of disc height loss by recombinant human osteogenic protein-1 injection into intervertebral discs undergoing degeneration induced by an intradiscal injection of chondroitinase ABC.
Spine 2007;32(11):1197-205.
2007: Yasuchika Aoki; Howard S An; Kazuhisa Takahashi; Kei Miyamoto; Mary Ellen Lenz; Hideshige Moriya; Koichi Masuda
Axonal growth potential of lumbar dorsal root ganglion neurons in an organ culture system: response of nerve growth factor-sensitive neurons to neuronal injury and an inflammatory cytokine.
Spine 2007;32(8):857-63.
2007: Yumiko Abe; Koji Akeda; Howard S An; Yasuchika Aoki; Rajeswari Pichika; Carol Muehleman; Tomoatsu Kimura; Koichi Masuda
Proinflammatory cytokines stimulate the expression of nerve growth factor by human intervertebral disc cells.
Spine 2007;32(6):635-42.
2007: Koji Akeda; Howard S An; Rajeswari Pichika; Kalpa Patel; Carol Muehleman; Koichi Nakagawa; Atsumasa Uchida; Koichi Masuda
The expression of NG2 proteoglycan in the human intervertebral disc.
Spine 2007;32(3):306-14.
2007: Susan M Renner; Raghu N Natarajan; Avinash G Patwardhan; Robert M Havey; Leonard I Voronov; Bev Y Guo; Gunnar B J Andersson; Howard S An
Novel model to analyze the effect of a large compressive follower pre-load on range of motions in a lumbar spine.
Journal of biomechanics 2007;40(6):1326-32.
2006: Takehide Chujo; Howard S An; Koji Akeda; Kei Miyamoto; Carol Muehleman; Mohamed Attawia; Gunnar Andersson; Koichi Masuda
Effects of growth differentiation factor-5 on the intervertebral disc--in vitro bovine study and in vivo rabbit disc degeneration model study.
Spine 2006;31(25):2909-17.
2006: Koji Akeda; Howard S An; Masahiko Okuma; Mohamed Attawia; Kei Miyamoto; Eugene Thonar; Mary Ellen Lenz; Robert Sah; Koichi Masuda
Platelet-rich plasma stimulates porcine articular chondrocyte proliferation and matrix biosynthesis.
Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society 2006;14(12):1272-80.
2006: Yoichi Aota; Howard S An; Yoshiyuki Imai; Eugene Thonar; Carol Muehleman; Koichi Masuda
Comparison of cellular response in bovine intervertebral disc cells and articular chondrocytes: effects .of lipopolysaccharide on proteoglycan metabolism.
Cell and tissue research 2006;326(3):787-93.
2006: Kei Miyamoto; Koichi Masuda; Jesse G Kim; Nozomu Inoue; Koji Akeda; Gunnar B J Andersson; Howard S An
Intradiscal injections of osteogenic protein-1 restore the viscoelastic properties of degenerated intervertebral discs.
The spine journal : official journal of the North American Spine Society 2006;6(6):692-703.
2006: Yejia Zhang; James M Kerns; D Greg Anderson; Young Sang Lee; Er-Yun Chen; Chadi Tannoury; Howard S An
Sensory neurons and fibers from multiple spinal cord levels innervate the rabbit lumbar disc.
American journal of physical medicine & rehabilitation / Association of Academic Physiatrists 2006;85(11):865-71.
2006: Howard S An; Koichi Masuda; Nozomu Inoue
Intervertebral disc degeneration: biological and biomechanical factors.
Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association 2006;11(5):541-52.
2006: Kern Singh; Howard S An
Motion preservation technologies: alternatives to spinal fusion.
American journal of orthopedics (Belle Mead, N.J.) 2006;35(9):411-6.
2006: Yejia Zhang; Howard S An; Eugene Thonar; Susan Chubinskaya; Tong-Chuan He; Frank M Phillips
Comparative effects of bone morphogenetic proteins and sox9 overexpression on extracellular matrix metabolism of bovine nucleus pulposus cells.
Spine 2006;31(19):2173-9.
2006: Ruth S Ochia; Nozomu Inoue; Susan M Renner; Eric P Lorenz; Tae-Hong Lim; Gunnar B J Andersson; Howard S An
Three-dimensional in vivo measurement of lumbar spine segmental motion.
Spine 2006;31(18):2073-8.
2006: Koichi Masuda; Howard S An
Prevention of disc degeneration with growth factors.
European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society 2006;15 Suppl 3():S422-32.
2006: Koji Akeda; Howard S An; Rajeswari Pichika; Mohamed Attawia; Eugene Thonar; Mary Ellen Lenz; Atsumasa Uchida; Koichi Masuda
Platelet-rich plasma (PRP) stimulates the extracellular matrix metabolism of porcine nucleus pulposus and anulus fibrosus cells cultured in alginate beads.
Spine 2006;31(9):959-66.
2006: Gunnar B J Andersson; Howard S An; Theodore R Oegema; Lori A Setton
Intervertebral disc degeneration. Summary of an AAOS/NIH/ORS workshop, September 2005.
The Journal of bone and joint surgery. American volume 2006;88(4):895-9.
2006: Gunnar B J Andersson; Howard S An; Theodore R Oegema; Lori A Setton
Directions for future research.
The Journal of bone and joint surgery. American volume 2006;88 Suppl 2():110-4.
2006: Howard S An; Koichi Masuda
Relevance of in vitro and in vivo models for intervertebral disc degeneration.
The Journal of bone and joint surgery. American volume 2006;88 Suppl 2():88-94.
2006: Koichi Masuda; Yoshiyuki Imai; Masahiko Okuma; Carol Muehleman; Koichi Nakagawa; Koji Akeda; Eugene Thonar; Gunnar Andersson; Howard S An
Osteogenic protein-1 injection into a degenerated disc induces the restoration of disc height and structural changes in the rabbit anular puncture model.
Spine 2006;31(7):742-54.
2006: K Singh; Dino Samartzis; Alexander R Vaccaro; Gunnar B J Andersson; Howard S An; John G Heller
Current concepts in the management of metastatic spinal disease. The role of minimally-invasive approaches.
The Journal of bone and joint surgery. British volume 2006;88(4):434-42.
2006: Kern Singh; Dino Samartzis; William T Pennington; Jeffrey Wise; Howard S An
Unusual presentation of a paraspinal mass with involvement of a lumbar facet joint and the epidural space.
Orthopedics 2006;29(3):265-7.
2006: Howard S An; J Alex Seldomridge
Spinal infections: diagnostic tests and imaging studies.
Clinical orthopaedics and related research 2006;444():27-33.
2006: Kei Miyamoto; Koichi Masuda; Nozomu Inoue; Masahiko Okuma; Carol Muehleman; Howard S An
Anti-adhesion properties of a thrombin-based hemostatic gelatin in a canine laminectomy model: a biomechanical, biochemical, and histologic study.
Spine 2006;31(4):E91-7.
2006: K Singh; Dino Samartzis; John G Heller; Howard S An; Alexander R Vaccaro
The management of complex soft-tissue defects after spinal instrumentation.
The Journal of bone and joint surgery. British volume 2006;88(1):8-15.
2005: Yejia Zhang; Zhen Li; Eugene Thonar; Howard S An; Tong-Chuan He; Daniel Pietryla; Frank M Phillips
Transduced bovine articular chondrocytes affect the metabolism of cocultured nucleus pulposus cells in vitro: implications for chondrocyte transplantation into the intervertebral disc.
Spine 2005;30(23):2601-7.
2005: Kern Singh; Koichi Masuda; Howard S An
Animal models for human disc degeneration.
The spine journal : official journal of the North American Spine Society 2005;5(6 Suppl):267S-279S.
2005: Kern Singh; Dino Samartzis; Alexander R Vaccaro; Ahmad Nassr; Gunnar B J Andersson; S Tim Yoon; Frank M Phillips; Edward J Goldberg; Howard S An
Congenital lumbar spinal stenosis: a prospective, control-matched, cohort radiographic analysis.
The spine journal : official journal of the North American Spine Society 2005;5(6):615-22.
2005: Kei Miyamoto; Howard S An; Robert Sah; Koji Akeda; Masahiko Okuma; Lori Otten; Eugene Thonar; Koichi Masuda
Exposure to pulsed low intensity ultrasound stimulates extracellular matrix metabolism of bovine intervertebral disc cells cultured in alginate beads.
Spine 2005;30(21):2398-405.
2005: Kern Singh; John G Heller; Dino Samartzis; J Scott Price; Howard S An; S Tim Yoon; John Rhee; Jon T Ledlie; Frank M Phillips
Open vertebral cement augmentation combined with lumbar decompression for the operative management of thoracolumbar stenosis secondary to osteoporotic burst fractures.
Journal of spinal disorders & techniques 2005;18(5):413-9.
2005: Dino Samartzis; Francis H Shen; Edward J Goldberg; Howard S An
Is autograft the gold standard in achieving radiographic fusion in one-level anterior cervical discectomy and fusion with rigid anterior plate fixation?
Spine 2005;30(15):1756-61.
2005: Kern Singh; Howard S An; Dino Samartzis; Ahmad Nassr; Jason Provus; Margaret Hickey; Gunnar B J Andersson
A prospective cohort analysis of adjacent vertebral body bone mineral density in lumbar surgery patients with or without instrumented posterolateral fusion: a 9- to 12-year follow-up.
Spine 2005;30(15):1750-5.
2005: Kern Singh; Dino Samartzis; Howard S An
Neurofibromatosis type I with severe dystrophic kyphoscoliosis and its operative management via a simultaneous anterior-posterior approach: a case report and review of the literature.
The spine journal : official journal of the North American Spine Society 2005;5(4):461-6.
2005: Kenji Takegami; Howard S An; Fumio Kumano; Kazuhiro Chiba; Eugene Thonar; Kern Singh; Koichi Masuda
Osteogenic protein-1 is most effective in stimulating nucleus pulposus and annulus fibrosus cells to repair their matrix after chondroitinase ABC-induced in vitro chemonucleolysis.
The spine journal : official journal of the North American Spine Society 2005;5(3):231-8.
2005: Yejia Zhang; Howard S An; Marc Toofanfard; Zhen Li; Gunnar B J Andersson; Eugene Thonar
Low-dose interleukin-1 partially counteracts osteogenic protein-1-induced proteoglycan synthesis by adult bovine intervertebral disk cells.
American journal of physical medicine & rehabilitation / Association of Academic Physiatrists 2005;84(5):322-9.
2005: Yoichi Aota; Howard S An; Gene A Homandberg; Eugene Thonar; Gunnar B J Andersson; Rajeswari Pichika; Koichi Masuda
Differential effects of fibronectin fragment on proteoglycan metabolism by intervertebral disc cells: a comparison with articular chondrocytes.
Spine 2005;30(7):722-8.
2005: Howard S An; Kenji Takegami; Hiroshi Kamada; Cahn M Nguyen; Eugene Thonar; Kern Singh; Gunnar B J Andersson; Koichi Masuda
Intradiscal administration of osteogenic protein-1 increases intervertebral disc height and proteoglycan content in the nucleus pulposus in normal adolescent rabbits.
Spine 2005;30(1):25-31; discussion 31-2.
2005: Koichi Masuda; Yoichi Aota; Carol Muehleman; Yoshiyuki Imai; Masahiko Okuma; Eugene Thonar; Gunnar B J Andersson; Howard S An
A novel rabbit model of mild, reproducible disc degeneration by an anulus needle puncture: correlation between the degree of disc injury and radiological and histological appearances of disc degeneration.
Spine 2005;30(1):5-14.
2004: Koichi Masuda; Theodore R Oegema; Howard S An
Growth factors and treatment of intervertebral disc degeneration.
Spine 2004;29(23):2757-69.
2004: Howard S An; Paul A Anderson; Victor M Haughton; James C Iatridis; James D Kang; Jeffrey C Lotz; Raghu N Natarajan; Theodore R Oegema; Peter J Roughley; Lori A Setton; Jill P Urban; Tapio Videman; Gunnar B J Andersson; James N Weinstein
Introduction: disc degeneration: summary.
Spine 2004;29(23):2677-8.
2004: Francis H Shen; Dino Samartzis; Louis G Jenis; Howard S An
Rheumatoid arthritis: evaluation and surgical management of the cervical spine.
The spine journal : official journal of the North American Spine Society 2004;4(6):689-700.
2004: Dino Samartzis; Francis H Shen; Craig Lyon; Mathew Phillips; Edward J Goldberg; Howard S An
Does rigid instrumentation increase the fusion rate in one-level anterior cervical discectomy and fusion?
The spine journal : official journal of the North American Spine Society 2004;4(6):636-43.
2004: Francis H Shen; Dino Samartzis; Nitin Khanna; Edward J Goldberg; Howard S An
Comparison of clinical and radiographic outcome in instrumented anterior cervical discectomy and fusion with or without direct uncovertebral joint decompression.
The spine journal : official journal of the North American Spine Society 2004;4(6):629-35.
2004: Koichi Masuda; Howard S An
Growth factors and the intervertebral disc.
The spine journal : official journal of the North American Spine Society 2004;4(6 Suppl):330S-340S.
2004: Yejia Zhang; Howard S An; Shiwen Song; Marc Toofanfard; Koichi Masuda; Gunnar B J Andersson; Eugene Thonar
Growth factor osteogenic protein-1: differing effects on cells from three distinct zones in the bovine intervertebral disc.
American journal of physical medicine & rehabilitation / Association of Academic Physiatrists 2004;83(7):515-21.
2004: Susan M Renner; Tae-Hong Lim; Whoan-Jeang Kim; Leonid Katolik; Howard S An; Gunnar B J Andersson
Augmentation of pedicle screw fixation strength using an injectable calcium phosphate cement as a function of injection timing and method.
Spine 2004;29(11):E212-6.
2004: Kern Singh; Alexander R Vaccaro; Jesse Kim; Eric P Lorenz; Tae-Hong Lim; Howard S An
Enhancement of stability following anterior cervical corpectomy: a biomechanical study.
Spine 2004;29(8):845-9.
2004: Howard S An; Kern Singh; Alexander R Vaccaro; G Wang; H Yoshida; Jason Eck; Linda M McGrady; Tae-Hong Lim
Biomechanical evaluation of contemporary posterior spinal internal fixation configurations in an unstable burst-fracture calf spine model: special references of hook configurations and pedicle screws.
Spine 2004;29(3):257-62.
2003: Dino Samartzis; Francis H Shen; Don K Matthews; S Tim Yoon; Edward J Goldberg; Howard S An
Comparison of allograft to autograft in multilevel anterior cervical discectomy and fusion with rigid plate fixation.
The spine journal : official journal of the North American Spine Society 2003;3(6):451-9.
2003: Kern Singh; Alexander R Vaccaro; Jesse Kim; Eric P Lorenz; Tae-Hong Lim; Howard S An
Biomechanical comparison of cervical spine reconstructive techniques after a multilevel corpectomy of the cervical spine.
Spine 2003;28(20):2352-8; discussion 2358.
2003: Howard S An; Eugene Thonar; Koichi Masuda
Biological repair of intervertebral disc.
Spine 2003;28(15 Suppl):S86-92.
2003: Ashok Biyani; Gunnar B J Andersson; Haleem Chaudhary; Howard S An
Intradiscal electrothermal therapy: a treatment option in patients with internal disc disruption.
Spine 2003;28(15 Suppl):S8-14.
2003: Raghu N Natarajan; Robert B Garretson; Ashok Biyani; Tae-Hong Lim; Gunnar B J Andersson; Howard S An
Effects of slip severity and loading directions on the stability of isthmic spondylolisthesis: a finite element model study.
Spine 2003;28(11):1103-12.
2003: Howard S An; Nicholas U Ahn
Posterior decompressive procedures for the cervical spine.
Instructional course lectures 2003;52():471-7.
2002: Edward J Goldberg; Kern Singh; U Van; Ralph Garretson; Howard S An
Comparing outcomes of anterior cervical discectomy and fusion in workman's versus non-workman's compensation population.
The spine journal : official journal of the North American Spine Society 2002;2(6):408-14.
2002: Kenji Takegami; Eugene Thonar; Howard S An; Hiroshi Kamada; Koichi Masuda
Osteogenic protein-1 enhances matrix replenishment by intervertebral disc cells previously exposed to interleukin-1.
Spine 2002;27(12):1318-25.
2002: Tae-Hong Lim; Gregory T Brebach; Susan M Renner; Whoan-Jeang Kim; Jesse G Kim; Richard E Lee; Gunnar B J Andersson; Howard S An
Biomechanical evaluation of an injectable calcium phosphate cement for vertebroplasty.
Spine 2002;27(12):1297-302.
2001: Tae-Hong Lim; J G Kim; A Fujiwara; T T Yoon; S C Lee; J W Ha; Howard S An
Biomechanical evaluation of diagonal fixation in pedicle screw instrumentation.
Spine 2001;26(22):2498-503.
2001: Tae-Hong Lim; H Kwon; CH Jeon; J G Kim; M Sokolowski; Raghu N Natarajan; Howard S An; Gunnar B J Andersson
Effect of endplate conditions and bone mineral density on the compressive strength of the graft-endplate interface in anterior cervical spine fusion.
Spine 2001;26(8):951-6.
2001: Alexander R Vaccaro; Ashwini D Sharan; Rocky S Tuan; J D Kang; Howard S An; M A Morone; Paul E Savas; Alan S Hilibrand; J J Abitbol
The use of biologic materials in spinal fusion.
Orthopedics 2001;24(2):191-7; quiz 198-9.
2001: B H Chen; Raghu N Natarajan; Howard S An; Gunnar B J Andersson
Comparison of biomechanical response to surgical procedures used for cervical radiculopathy: posterior keyhole foraminotomy versus anterior foraminotomy and discectomy versus anterior discectomy with fusion.
Journal of spinal disorders 2001;14(1):17-20.
2001: N Tanaka; Howard S An; Tae-Hong Lim; A Fujiwara; CH Jeon; Victor M Haughton
The relationship between disc degeneration and flexibility of the lumbar spine.
The spine journal : official journal of the North American Spine Society 2001;1(1):47-56.
2001: Y Do Koh; Tae-Hong Lim; J Won You; J Eck; Howard S An
A biomechanical comparison of modern anterior and posterior plate fixation of the cervical spine.
Spine 2001;26(1):15-21.
2000: A Fujiwara; Tae-Hong Lim; Howard S An; N Tanaka; CH Jeon; Gunnar B J Andersson; Victor M Haughton
The effect of disc degeneration and facet joint osteoarthritis on the segmental flexibility of the lumbar spine.
Spine 2000;25(23):3036-44.
2000: Raghu N Natarajan; B H Chen; Howard S An; Gunnar B J Andersson
Anterior cervical fusion: a finite element model study on motion segment stability including the effect of osteoporosis.
Spine 2000;25(8):955-61.
2000: VM Haughton; TA Schmidt; K Keele; Howard S An; Tae-Hong Lim
Flexibility of lumbar spinal motion segments correlated to type of tears in the annulus fibrosus.
Journal of neurosurgery 2000;92(1 Suppl):81-6.
1999: Howard S An; J J Wise; R Xu
Anatomy of the cervicothoracic junction: a study of cadaveric dissection, cryomicrotomy, and magnetic resonance imaging.
Journal of spinal disorders 1999;12(6):519-25.
1998: Howard S An
Cervical spine trauma.
Spine 1998;23(24):2713-29.
1998: TA Schmidt; Howard S An; Tae-Hong Lim; B H Nowicki; VM Haughton
The stiffness of lumbar spinal motion segments with a high-intensity zone in the anulus fibrosus.
Spine 1998;23(20):2167-73.
1998: Howard S An; P R Benoit
Saline injection technique to confirm pedicle screw path: a cadaveric study.
American journal of orthopedics (Belle Mead, N.J.) 1998;27(5):362-5.
1997: T G Andreshak; Howard S An; J Hall; B Stein
Lumbar spine surgery in the obese patient.
Journal of spinal disorders 1997;10(5):376-9.
1997: Tae-Hong Lim; Jason C Eck; Howard S An; Linda M McGrady; Gerald F Harris; VM Haughton
A noninvasive, three-dimensional spinal motion analysis method.
Spine 1997;22(17):1996-2000.
1997: Tae-Hong Lim; Howard S An; J H Hong; J Y Ahn; J W You; Jason C Eck; Linda M McGrady
Biomechanical evaluation of anterior and posterior fixations in an unstable calf spine model.
Spine 1997;22(3):261-6.
1997: Howard S An; M A Coppes
Posterior cervical fixation for fracture and degenerative disc disease.
Clinical orthopaedics and related research 1997;(335):101-11.
1997: Alexander R Vaccaro; Howard S An; R R Betz; Jerome M Cotler; RA Balderston
The management of acute spinal trauma: prehospital and in-hospital emergency care.
Instructional course lectures 1997;46():113-25.
1996: Howard S An
Cervical root entrapment.
Hand clinics 1996;12(4):719-30.
1996: A Inufusa; Howard S An; Tae-Hong Lim; T Hasegawa; VM Haughton; B H Nowicki
Anatomic changes of the spinal canal and intervertebral foramen associated with flexion-extension movement.
Spine 1996;21(21):2412-20.
1996: Tae-Hong Lim; Jason C Eck; Howard S An; J H Hong; J Y Ahn; J W You
Biomechanics of transfixation in pedicle screw instrumentation.
Spine 1996;21(19):2224-9.
1996: A Infusa; Howard S An; J M Glover; Linda M McGrady; Tae-Hong Lim; Lee H Riley
The ideal amount of lumbar foraminal distraction for pedicle screw instrumentation.
Spine 1996;21(19):2218-23.
1996: B H Nowicki; VM Haughton; T A Schmidt; Tae-Hong Lim; Howard S An; Lee H Riley; L Yu; J W Hong
Occult lumbar lateral spinal stenosis in neural foramina subjected to physiologic loading.
AJNR. American journal of neuroradiology 1996;17(9):1605-14.
1996: Nabil A Ebraheim; Howard S An; Rongming Xu; M Ahmad; Richard A Yeasting
The quantitative anatomy of the cervical nerve root groove and the intervertebral foramen.
Spine 1996;21(14):1619-23.
1995: Tae-Hong Lim; Howard S An; T Hasegawa; Linda M McGrady; K Y Hasanoglu; C R Wilson
Prediction of fatigue screw loosening in anterior spinal fixation using dual energy x-ray absorptiometry.
Spine 1995;20(23):2565-8; discussion 2569.
1995: Howard S An; J M Simpson; J M Glover; J Stephany
Comparison between allograft plus demineralized bone matrix versus autograft in anterior cervical fusion. A prospective multicenter study.
Spine 1995;20(20):2211-6.
1995: J M Toth; Howard S An; Tae-Hong Lim; Y Ran; N G Weiss; W R Lundberg; R M Xu; K L Lynch
Evaluation of porous biphasic calcium phosphate ceramics for anterior cervical interbody fusion in a caprine model.
Spine 1995;20(20):2203-10.
1995: Howard S An; Tae-Hong Lim; J W You; J H Hong; Jason C Eck; Linda M McGrady
Biomechanical evaluation of anterior thoracolumbar spinal instrumentation.
Spine 1995;20(18):1979-83.
1995: Howard S An; T G Andreshak; C Nguyen; A Williams; D Daniels
Can we distinguish between benign versus malignant compression fractures of the spine by magnetic resonance imaging?
Spine 1995;20(16):1776-82.
1995: Alexander R Vaccaro; S J Rizzolo; RA Balderston; T J Allardyce; S R Garfin; C Dolinskas; Howard S An
Placement of pedicle screws in the thoracic spine. Part II: An anatomical and radiographic assessment.
The Journal of bone and joint surgery. American volume 1995;77(8):1200-6.
1995: Howard S An; K Lynch; J Toth
Prospective comparison of autograft vs. allograft for adult posterolateral lumbar spine fusion: differences among freeze-dried, frozen, and mixed grafts.
Journal of spinal disorders 1995;8(2):131-5.
1995: Tae-Hong Lim; Howard S An; C Evanich; K Y Hasanoglu; Linda M McGrady; C R Wilson
Strength of anterior vertebral screw fixation in relationship to bone mineral density.
Journal of spinal disorders 1995;8(2):121-5.
1995: C Nguyen; VM Haughton; Khang-cheng Ho; Howard S An; J B Myklebust; T Hasegawa; Rongming Xu; J M Harb
Contrast enhancement in spinal nerve roots: an experimental study.
AJNR. American journal of neuroradiology 1995;16(2):265-8.
1995: T Hasegawa; Howard S An; VM Haughton; B H Nowicki
Lumbar foraminal stenosis: critical heights of the intervertebral discs and foramina. A cryomicrotome study in cadavera.
The Journal of bone and joint surgery. American volume 1995;77(1):32-8.
1994: Howard S An; A Vaccaro; Jerome M Cotler; S Lin
Spinal disorders at the cervicothoracic junction.
Spine 1994;19(22):2557-64.
1994: Howard S An; Rongming Xu; Tae-Hong Lim; Linda M McGrady; C Wilson
Prediction of bone graft strength using dual-energy radiographic absorptiometry.
Spine 1994;19(20):2358-62; discussion 2362-3.
1994: Howard S An; C P Silveri; J M Simpson; P File; C Simmons; F A Simeone; RA Balderston
Comparison of smoking habits between patients with surgically confirmed herniated lumbar and cervical disc disease and controls.
Journal of spinal disorders 1994;7(5):369-73.
1994: Howard S An; C Nguyen; VM Haughton; Khang-cheng Ho; T Hasegawa
Gadolinium-enhancement characteristics of magnetic resonance imaging in distinguishing herniated intervertebral disc versus scar in dogs.
Spine 1994;19(18):2089-94; discussion 2095.
1993: Howard S An; VM Haughton
Nondiscogenic lumbar radiculopathy: imaging considerations.
Seminars in ultrasound, CT, and MR 1993;14(6):414-24.
1993: T Hasegawa; Howard S An; VM Haughton
Imaging anatomy of the lateral lumbar spinal canal.
Seminars in ultrasound, CT, and MR 1993;14(6):404-13.
1993: J M Simpson; C P Silveri; RA Balderston; Frederick A Simeone; Howard S An
The results of operations on the lumbar spine in patients who have diabetes mellitus.
The Journal of bone and joint surgery. American volume 1993;75(12):1823-9.
1993: Howard S An; C J Evanich; B H Nowicki; VM Haughton
Ideal thickness of Smith-Robinson graft for anterior cervical fusion. A cadaveric study with computed tomographic correlation.
Spine 1993;18(14):2043-7.
1993: J M Simpson; C P Silveri; Frederick A Simeone; RA Balderston; Howard S An
Thoracic disc herniation. Re-evaluation of the posterior approach using a modified costotransversectomy.
Spine 1993;18(13):1872-7.
1993: Todd J Albert; RA Balderston; J G Heller; Harry N Herkowitz; Steven R Garfin; K Tomany; Howard S An; F A Simeone
Upper lumbar disc herniations.
Journal of spinal disorders 1993;6(4):351-9.
1993: Todd J Albert; M J Levine; Howard S An; Jerome M Cotler; RA Balderston
Concomitant noncontiguous thoracolumbar and sacral fractures.
Spine 1993;18(10):1285-91.
1993: C M Nguyen; VM Haughton; Khang-cheng Ho; Howard S An
MR contrast enhancement: an experimental study in postlaminectomy epidural fibrosis.
AJNR. American journal of neuroradiology 1993;14(4):997-1002.
1992: Alexander R Vaccaro; Howard S An; S Lin; S Sun; RA Balderston; Jerome M Cotler
Noncontiguous injuries of the spine.
Journal of spinal disorders 1992;5(3):320-9.
1991: Howard S An; R Gordin; K Renner
Anatomic considerations for plate-screw fixation of the cervical spine.
Spine 1991;16(10 Suppl):S548-51.
1991: Howard S An; A Vaccaro; Jerome M Cotler; S Lin
Low lumbar burst fractures. Comparison among body cast, Harrington rod, Luque rod, and Steffee plate.
Spine 1991;16(8 Suppl):S440-4.
1991: Howard S An; A R Vaccaro; C A Dolinskas; Jerome M Cotler; RA Balderston; W B Bauerle
Differentiation between spinal tumors and infections with magnetic resonance imaging.
Spine 1991;16(8 Suppl):S334-8.
1990: P C Kupcha; Howard S An; Jerome M Cotler
Gunshot wounds to the cervical spine.
Spine 1990;15(10):1058-63.
1990: Howard S An; A Vaccaro; F A Simeone; RA Balderston; D O'Neill
Herniated lumbar disc in patients over the age of fifty.
Journal of spinal disorders 1990;3(2):143-6.
1990: J M Simpson; Nabil A Ebraheim; Howard S An; W T Jackson
Posterolateral bone graft of the tibia.
Clinical orthopaedics and related research 1990;(251):200-6.
1989: Nabil A Ebraheim; Howard S An; W T Jackson; Jeffrey A Brown
Internal fixation of the unstable cervical spine using posterior Roy-Camille plates: preliminary report.
Journal of orthopaedic trauma 1989;3(1):23-8.
1989: Howard S An; Nabil A Ebraheim; ER Savolaine; P Fenton; A Poka; W T Jackson
The value of internal oblique radiographs for posterolateral bone grafting of the tibia.
Clinical orthopaedics and related research 1989;(238):209-10.
1988: Nabil A Ebraheim; Howard S An; W T Jackson; S R Pearlstein; A Burgess; H Tscherne; N Hass; J Kellam; B U Wipperman
Scapulothoracic dissociation.
The Journal of bone and joint surgery. American volume 1988;70(3):428-32.
1988: Howard S An; J P Vonderbrink; Nabil A Ebraheim; F Shiple; W T Jackson
Open scapulothoracic dissociation with intact neurovascular status in a child.
Journal of orthopaedic trauma 1988;2(1):36-8.
1987: Howard S An; N Ebraheim; K Kim; W T Jackson; J T Kane
Heterotopic ossification and pseudoarthrosis in the shoulder following encephalitis. A case report and review of the literature.
Clinical orthopaedics and related research 1987;(219):291-8.
1987: Howard S An; J M Simpson; S Gale; W T Jackson
Acute anterior compartment syndrome in the thigh: a case report and review of the literature.
Journal of orthopaedic trauma 1987;1(2):180-2.
1987: Howard S An; W T Jackson; K Hawthorne; Nabil A Ebraheim
Transient simultaneous sciatic and femoral nerve palsy secondary to iliacus and gluteal hematomas following heparinization for pulmonary embolus in a patient with posterior hip dislocation.
Journal of orthopaedic trauma 1987;1(2):174-6.