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Christopher Powers

Research Profile

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TOP 3
Kristen M Stearns; Robert G Keim; Christopher M Powers
Influence of relative hip and knee extensor muscle strength on landing biomechanics.
Liang-Ching Tsai; Irving S Scher; Christopher M Powers
Quantification of Tibiofemoral Shear and Compressive Loads Using a MRI-Based EMG-Driven Knee Model.
Mark A Lyle; Robert J Gregor; Francisco J Valero-Cuevas; Christopher M Powers
The lower extremity dexterity test as a measure of lower extremity dynamical capability.

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All Publications

2013: Kristen M Stearns; Robert G Keim; Christopher M Powers
Influence of relative hip and knee extensor muscle strength on landing biomechanics.
Medicine and science in sports and exercise 2013;45(5):935-41.
2013: Liang-Ching Tsai; Irving S Scher; Christopher M Powers
Quantification of Tibiofemoral Shear and Compressive Loads Using a MRI-Based EMG-Driven Knee Model.
Journal of applied biomechanics 2013;29(2):229-34.
2013: Mark A Lyle; Robert J Gregor; Francisco J Valero-Cuevas; Christopher M Powers
The lower extremity dexterity test as a measure of lower extremity dynamical capability.
Journal of biomechanics 2013;46(5):998-1002.
2013: Liang-Ching Tsai; Christopher M Powers
Increased hip and knee flexion during landing decreases tibiofemoral compressive forces in women who have undergone anterior cruciate ligament reconstruction.
The American journal of sports medicine 2013;41(2):423-9.
2013: David M Selkowitz; George J Beneck; Christopher M Powers
Which exercises target the gluteal muscles while minimizing activation of the tensor fascia lata? Electromyographic assessment using fine-wire electrodes.
The Journal of orthopaedic and sports physical therapy 2013;43(2):54-64.
2013: Kai-Yu Ho; Houchun H Hu; Joyce H Keyak; Patrick M Colletti; Christopher M Powers
Measuring bone mineral density with fat-water MRI: comparison with computed tomography.
Journal of magnetic resonance imaging : JMRI 2013;37(1):237-42.
2012: Liang-Ching Tsai; Patrick M Colletti; Scott McLean; Christopher M Powers
Greater muscle co-contraction results in increased tibiofemoral compressive forces in females who have undergone anterior cruciate ligament reconstruction.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society 2012;30(12):2007-14.
2012: Susan M Sigward; Kathryn L Havens; Christine D Pollard; Christopher M Powers
Influence of sex and maturation on knee mechanics during side-step cutting.
Medicine and science in sports and exercise 2012;44(8):1497-503.
2012: Susan M Sigward; C D Pollard; Christopher M Powers
The influence of sex and maturation on landing biomechanics: implications for anterior cruciate ligament injury.
Scandinavian journal of medicine & science in sports 2012;22(4):502-9.
2012: Szu-Ping Lee; Richard B Souza; Christopher M Powers
The influence of hip abductor muscle performance on dynamic postural stability in females with patellofemoral pain.
Gait & posture 2012;36(3):425-9.
2012: Kai-Yu Ho; Mark G Blanchette; Christopher M Powers
The influence of heel height on patellofemoral joint kinetics during walking.
Gait & posture 2012;36(2):271-5.
2012: Liang-Ching Tsai; Patrick M Colletti; Christopher M Powers
Magnetic resonance imaging-measured muscle parameters improved knee moment prediction of an EMG-driven model.
Medicine and science in sports and exercise 2012;44(2):305-12.
2011: Mark A Lyle; Christine D Pollard; Susan M Sigward; Liang-Ching Tsai; Christopher M Powers
Influence of maturation on instep kick biomechanics in female soccer athletes.
Medicine and science in sports and exercise 2011;43(10):1948-54.
2011: Susan M Sigward; Kathryn L Havens; Christopher M Powers
Knee separation distance and lower extremity kinematics during a drop land: implications for clinical screening.
Journal of athletic training 2011;46(5):471-5.
2011: Mark G Blanchette; John Brault; Christopher M Powers
The influence of heel height on utilized coefficient of friction during walking.
Gait & posture 2011;34(1):107-10.
2011: S Farrokhi; J H Keyak; Christopher M Powers
Individuals with patellofemoral pain exhibit greater patellofemoral joint stress: a finite element analysis study.
Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society 2011;19(3):287-94.
2011: Shawn Farrokhi; Patrick M Colletti; Christopher M Powers
Differences in patellar cartilage thickness, transverse relaxation time, and deformational behavior: a comparison of young women with and without patellofemoral pain.
The American journal of sports medicine 2011;39(2):384-91.
2010: Yu-Jen Chen; Irving Scher; Christopher M Powers
Quantification of patellofemoral joint reaction forces during functional activities using a subject-specific three-dimensional model.
Journal of applied biomechanics 2010;26(4):415-23.
2010: Kornelia Kulig; Kellee Harper-Hanigan; Richard B Souza; Christopher M Powers
Measurement of femoral torsion by ultrasound and magnetic resonance imaging: concurrent validity.
Physical therapy 2010;90(11):1641-8.
2010: Christopher M Powers; Beth Fisher
Mechanisms underlying ACL injury-prevention training: the brain-behavior relationship.
Journal of athletic training 2010;45(5):513-5.
2010: Christopher M Powers; Gary M Berke; Mark D Clary; Michael Fredericson
Patellofemoral pain: is there a role for orthoses?
PM & R : the journal of injury, function, and rehabilitation 2010;2(8):771-6.
2010: Christopher M Powers; Mark G Blanchette; John Brault; Jim Flynn; Gunter P Siegmund
Validation of walkway tribometers: establishing a reference standard.
Journal of forensic sciences 2010;55(2):366-70.
2010: Christopher M Powers; Yu-Jen Chen; Irving S Scher; Thay Q Lee
Multiplane loading of the extensor mechanism alters the patellar ligament force/quadriceps force ratio.
Journal of biomechanical engineering 2010;132(2):024503.
2010: Christine D Pollard; Susan M Sigward; Christopher M Powers
Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments.
Clinical biomechanics (Bristol, Avon) 2010;25(2):142-6.
2009: Kornelia Kulig; George J Beneck; David M Selkowitz; John M Popovich; Ting Ting Ge; Sean P Flanagan; Elizabeth M Poppert; Kimiko A Yamada; Christopher M Powers; Stan Azen; Carolee J Winstein; James Gordon; Srinath Samudrala; Thomas C Chen; Arya Nick Shamie; Larry T Khoo; Mark J Spoonamore; Jeffrey C Wang
An intensive, progressive exercise program reduces disability and improves functional performance in patients after single-level lumbar microdiskectomy.
Physical therapy 2009;89(11):1145-57.
2009: Liang-Ching Tsai; Susan M Sigward; Christine D Pollard; Mark J Fletcher; Christopher M Powers
Effects of fatigue and recovery on knee mechanics during side-step cutting.
Medicine and science in sports and exercise 2009;41(10):1952-7.
2009: Richard B Souza; Christopher M Powers
Predictors of hip internal rotation during running: an evaluation of hip strength and femoral structure in women with and without patellofemoral pain.
The American journal of sports medicine 2009;37(3):579-87.
2008: Christopher M Powers; Kathryn L Doubleday; Carina Escudero
Influence of patellofemoral bracing on pain, knee extensor torque, and gait function in females with patellofemoral pain.
Physiotherapy theory and practice 2008;24(3):143-50.
2008: Christopher M Powers; George J Beneck; Kornelia Kulig; Robert Landel; Michael Fredericson
Effects of a single session of posterior-to-anterior spinal mobilization and press-up exercise on pain response and lumbar spine extension in people with nonspecific low back pain.
Physical therapy 2008;88(4):485-93.
2008: Richard B Souza; Christopher M Powers
Trochlear groove spur in a patient with patellofemoral pain.
The Journal of orthopaedic and sports physical therapy 2008;38(3):158.
2008: Wendy S Burke; C Thomas Vangsness; Christopher M Powers
Quantification of two-dimensional glenohumeral rhythm in persons with and without symptoms of shoulder impingement.
American journal of orthopedics (Belle Mead, N.J.) 2008;37(1):24-30.
2008: Robert Landel; Kornelia Kulig; Michael Fredericson; Bernard Li; Christopher M Powers
Intertester reliability and validity of motion assessments during lumbar spine accessory motion testing.
Physical therapy 2008;88(1):43-9.
2007: Judith M Burnfield; Christopher M Powers
The role of center of mass kinematics in predicting peak utilized coefficient of friction during walking.
Journal of forensic sciences 2007;52(6):1328-33.
2007: Samuel R Ward; Michael R Terk; Christopher M Powers
Patella alta: association with patellofemoral alignment and changes in contact area during weight-bearing.
The Journal of bone and joint surgery. American volume 2007;89(8):1749-55.
2007: Susan M Sigward; Christopher M Powers
Loading characteristics of females exhibiting excessive valgus moments during cutting.
Clinical biomechanics (Bristol, Avon) 2007;22(7):827-33.
2007: Christopher M Powers; John Brault; Maria A Stefanou; Yi-Ju Tsai; Jim Flynn; Gunter P Siegmund
Assessment of walkway tribometer readings in evaluating slip resistance: a gait-based approach.
Journal of forensic sciences 2007;52(2):400-5.
2007: Christine D Pollard; Susan M Sigward; Christopher M Powers
Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver.
Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine 2007;17(1):38-42.
2007: Kornelia Kulig; Christopher M Powers; Robert Landel; Hungwen Chen; Michael Fredericson; Marc Guillet; Kim Butts
Segmental lumbar mobility in individuals with low back pain: in vivo assessment during manual and self-imposed motion using dynamic MRI.
BMC musculoskeletal disorders 2007;8():8.
2006: Susumu Ota; Samuel R Ward; Yu-jen Chen; Yi-ju Tsai; Christopher M Powers
Concurrent criterion-related validity and reliability of a clinical device used to assess lateral patellar displacement.
The Journal of orthopaedic and sports physical therapy 2006;36(9):645-52.
2006: Judith M Burnfield; Christopher M Powers
Prediction of slips: an evaluation of utilized coefficient of friction and available slip resistance.
Ergonomics 2006;49(10):982-95.
2006: Susan M Sigward; Christopher M Powers
The influence of experience on knee mechanics during side-step cutting in females.
Clinical biomechanics (Bristol, Avon) 2006;21(7):740-7.
2006: Kathleen J Ganley; Christopher M Powers
Intersegmental dynamics during the swing phase of gait: a comparison of knee kinetics between 7 year-old children and adults.
Gait & posture 2006;23(4):499-504.
2006: Christine D Pollard; Susan M Sigward; Susumu Ota; Karen Langford; Christopher M Powers
The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players.
Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine 2006;16(3):223-7.
2006: David M Selkowitz; Kornelia Kulig; Elizabeth M Poppert; Sean P Flanagan; Ndidiamaka D Matthews; George J Beneck; John M Popovich; Jose R Lona; Kimiko A Yamada; Wendy S Burke; Carolyn Ervin; Christopher M Powers
The immediate and long-term effects of exercise and patient education on physical, functional, and quality-of-life outcome measures after single-level lumbar microdiscectomy: a randomized controlled trial protocol.
BMC musculoskeletal disorders 2006;7():70.
2006: Christopher M Powers; Yu-Jen Chen; Irving Scher; Thay Q Lee
The influence of patellofemoral joint contact geometry on the modeling of three dimensional patellofemoral joint forces.
Journal of biomechanics 2006;39(15):2783-91.
2006: Susan M Sigward; Christopher M Powers
The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting.
Clinical biomechanics (Bristol, Avon) 2006;21(1):41-8.
2005: Samuel R Ward; Michael R Terk; Christopher M Powers
Influence of patella alta on knee extensor mechanics.
Journal of biomechanics 2005;38(12):2415-22.
2005: Judith M Burnfield; Yi-Ju Tsai; Christopher M Powers
Comparison of utilized coefficient of friction during different walking tasks in persons with and without a disability.
Gait & posture 2005;22(1):82-8.
2005: George J Beneck; Kornelia Kulig; Robert Landel; Christopher M Powers
The relationship between lumbar segmental motion and pain response produced by a posterior-to-anterior force in persons with nonspecific low back pain.
The Journal of orthopaedic and sports physical therapy 2005;35(4):203-9.
2005: Kathleen J Ganley; Christopher M Powers
Gait kinematics and kinetics of 7-year-old children: a comparison to adults using age-specific anthropometric data.
Gait & posture 2005;21(2):141-5.
2004: Samuel R Ward; Christopher M Powers
The influence of patella alta on patellofemoral joint stress during normal and fast walking.
Clinical biomechanics (Bristol, Avon) 2004;19(10):1040-7.
2004: Christopher M Powers; Samuel R Ward; Yu-Jen Chen; Li-Der Chan; Michael R Terk
Effect of bracing on patellofemoral joint stress while ascending and descending stairs.
Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine 2004;14(4):206-14.
2004: Christopher M Powers; Samuel R Ward; Li-Der Chan; Yu-Jen Chen; Michael R Terk
The effect of bracing on patella alignment and patellofemoral joint contact area.
Medicine and science in sports and exercise 2004;36(7):1226-32.
2004: Kathleen J Ganley; Christopher M Powers
Anthropometric parameters in children: a comparison of values obtained from dual energy x-ray absorptiometry and cadaver-based estimates.
Gait & posture 2004;19(2):133-40.
2004: Kornelia Kulig; Robert Landel; Christopher M Powers
Assessment of lumbar spine kinematics using dynamic MRI: a proposed mechanism of sagittal plane motion induced by manual posterior-to-anterior mobilization.
The Journal of orthopaedic and sports physical therapy 2004;34(2):57-64.
2004: Christopher M Powers; Samuel R Ward; Yu-jen Chen; Li-Der Chan; Michael R Terk
The effect of bracing on patellofemoral joint stress during free and fast walking.
The American journal of sports medicine 2004;32(1):224-31.
2004: Kathleen J Ganley; Christopher M Powers
Determination of lower extremity anthropometric parameters using dual energy X-ray absorptiometry: the influence on net joint moments during gait.
Clinical biomechanics (Bristol, Avon) 2004;19(1):50-6.
2003: Gretchen B Salsich; Samuel R Ward; Michael R Terk; Christopher M Powers
In vivo assessment of patellofemoral joint contact area in individuals who are pain free.
Clinical orthopaedics and related research 2003;(417):277-84.
2003: Jacklyn Heino Brechter; Christopher M Powers; Michael R Terk; Samuel R Ward; Thay Q Lee
Quantification of patellofemoral joint contact area using magnetic resonance imaging.
Magnetic resonance imaging 2003;21(9):955-9.
2003: Christopher M Powers; Samuel R Ward; Michael Fredericson; Marc Guillet; Frank G Shellock
Patellofemoral kinematics during weight-bearing and non-weight-bearing knee extension in persons with lateral subluxation of the patella: a preliminary study.
The Journal of orthopaedic and sports physical therapy 2003;33(11):677-85.
2003: Christopher M Powers
The influence of altered lower-extremity kinematics on patellofemoral joint dysfunction: a theoretical perspective.
The Journal of orthopaedic and sports physical therapy 2003;33(11):639-46.
2003: Christopher M Powers; Kornelia Kulig; James Harrison; Gabrielle Bergman
Segmental mobility of the lumbar spine during a posterior to anterior mobilization: assessment using dynamic MRI.
Clinical biomechanics (Bristol, Avon) 2003;18(1):80-3.
2002: Christopher M Powers; Judith M Burnfield; Phil Lim; John M Brault; James E Flynn
Utilized coefficient of friction during walking: static estimates exceed measured values.
Journal of forensic sciences 2002;47(6):1303-8.
2002: Jacklyn Heino Brechter; Christopher M Powers
Patellofemoral stress during walking in persons with and without patellofemoral pain.
Medicine and science in sports and exercise 2002;34(10):1582-93.
2002: Jacklyn Heino Brechter; Christopher M Powers
Patellofemoral joint stress during stair ascent and descent in persons with and without patellofemoral pain.
Gait & posture 2002;16(2):115-23.
2002: Wendy S Burke; C Thomas Vangsness; Christopher M Powers
Strengthening the supraspinatus: a clinical and biomechanical review.
Clinical orthopaedics and related research 2002;(402):292-8.
2002: Christopher M Powers; Pon-Yo Chen; Stephen F Reischl; Jaquelin Perry
Comparison of foot pronation and lower extremity rotation in persons with and without patellofemoral pain.
Foot & ankle international. / American Orthopaedic Foot and Ankle Society [and] Swiss Foot and Ankle Society 2002;23(7):634-40.
2002: Samuel R Ward; Frank G Shellock; Michael R Terk; Gretchen B Salsich; Christopher M Powers
Assessment of patellofemoral relationships using kinematic MRI: comparison between qualitative and quantitative methods.
Journal of magnetic resonance imaging : JMRI 2002;16(1):69-74.
2002: David A Wallace; George J Salem; Ruben Salinas; Christopher M Powers
Patellofemoral joint kinetics while squatting with and without an external load.
The Journal of orthopaedic and sports physical therapy 2002;32(4):141-8.
2002: Michael Fredericson; Christopher M Powers
Practical management of patellofemoral pain.
Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine 2002;12(1):36-8.
2002: Gretchen B Salsich; Jacklyn Heino Brechter; Daniel Farwell; Christopher M Powers
The effects of patellar taping on knee kinetics, kinematics, and vastus lateralis muscle activity during stair ambulation in individuals with patellofemoral pain.
The Journal of orthopaedic and sports physical therapy 2002;32(1):3-10.
2001: Gretchen B Salsich; Jacklyn Heino Brechter; Christopher M Powers
Lower extremity kinetics during stair ambulation in patients with and without patellofemoral pain.
Clinical biomechanics (Bristol, Avon) 2001;16(10):906-12.
2001: G M Souza; Lucinda L Baker; Christopher M Powers
Electromyographic activity of selected trunk muscles during dynamic spine stabilization exercises.
Archives of physical medicine and rehabilitation 2001;82(11):1551-7.
2001: George J Salem; Christopher M Powers
Patellofemoral joint kinetics during squatting in collegiate women athletes.
Clinical biomechanics (Bristol, Avon) 2001;16(5):424-30.
2001: Kornelia Kulig; Christopher M Powers; Frank G Shellock; Michael R Terk
The effects of eccentric velocity on activation of elbow flexors: evaluation by magnetic resonance imaging.
Medicine and science in sports and exercise 2001;33(2):196-200.
2000: Christopher M Powers
Patellar kinematics, part II: the influence of the depth of the trochlear groove in subjects with and without patellofemoral pain.
Physical therapy 2000;80(10):965-78.
2000: Christopher M Powers
Patellar kinematics, part I: the influence of vastus muscle activity in subjects with and without patellofemoral pain.
Physical therapy 2000;80(10):956-64.
2000: Judith M Burnfield; Karen R Josephson; Christopher M Powers; Laurence Z Rubenstein
The influence of lower extremity joint torque on gait characteristics in elderly men.
Archives of physical medicine and rehabilitation 2000;81(9):1153-7.
1999: Christopher M Powers; Frank G Shellock; T V Beering; D E Garrido; R M Goldbach; T Molnar
Effect of bracing on patellar kinematics in patients with patellofemoral joint pain.
Medicine and science in sports and exercise 1999;31(12):1714-20.
1999: Christopher M Powers; J G Heino; S Rao; Jacquelin Perry
The influence of patellofemoral pain on lower limb loading during gait.
Clinical biomechanics (Bristol, Avon) 1999;14(10):722-8.
1999: Stephen F Reischl; Christopher M Powers; S Rao; J Perry
Relationship between foot pronation and rotation of the tibia and femur during walking.
Foot & ankle international. / American Orthopaedic Foot and Ankle Society [and] Swiss Foot and Ankle Society 1999;20(8):513-20.
1999: Christopher M Powers; S Mortenson; D Nishimoto; D Simon
Criterion-related validity of a clinical measurement to determine the medial/lateral component of patellar orientation.
The Journal of orthopaedic and sports physical therapy 1999;29(7):372-7.
1998: Christopher M Powers
Rehabilitation of patellofemoral joint disorders: a critical review.
The Journal of orthopaedic and sports physical therapy 1998;28(5):345-54.
1998: Christopher M Powers; Frank G Shellock; M Pfaff
Quantification of patellar tracking using kinematic MRI.
Journal of magnetic resonance imaging : JMRI 1998;8(3):724-32.
1997: Christopher M Powers; Robert Landel; T Sosnick; J Kirby; K Mengel; A Cheney; Jacquelin Perry
The effects of patellar taping on stride characteristics and joint motion in subjects with patellofemoral pain.
The Journal of orthopaedic and sports physical therapy 1997;26(6):286-91.
1997: Christopher M Powers; Jacquelin Perry; A Hsu; H J Hislop
Are patellofemoral pain and quadriceps femoris muscle torque associated with locomotor function?
Physical therapy 1997;77(10):1063-75; discussion 1075-8.
1996: Christopher M Powers; Robert Landel; Jacquelin Perry
Timing and intensity of vastus muscle activity during functional activities in subjects with and without patellofemoral pain.
Physical therapy 1996;76(9):946-55; discussion 956-67.
1996: Christopher M Powers; L A Boyd; C A Fontaine; Jacquelin Perry
The influence of lower-extremity muscle force on gait characteristics in individuals with below-knee amputations secondary to vascular disease.
Physical therapy 1996;76(4):369-77; discussion 378-85.
1995: R D Snyder; Christopher M Powers; C Fontaine; Jacquelin Perry
The effect of five prosthetic feet on the gait and loading of the sound limb in dysvascular below-knee amputees.
Journal of rehabilitation research and development 1995;32(4):309-15.
1995: L Torburn; Christopher M Powers; R Guiterrez; Jacquelin Perry
Energy expenditure during ambulation in dysvascular and traumatic below-knee amputees: a comparison of five prosthetic feet.
Journal of rehabilitation research and development 1995;32(2):111-9.
1994: Christopher M Powers; L Torburn; Jacquelin Perry; E Ayyappa
Influence of prosthetic foot design on sound limb loading in adults with unilateral below-knee amputations.
Archives of physical medicine and rehabilitation 1994;75(7):825-9.
1994: Christopher M Powers; Craig J Newsam; JoAnne K Gronley; C A Fontaine; Jacquelin Perry
Isometric shoulder torque in subjects with spinal cord injury.
Archives of physical medicine and rehabilitation 1994;75(7):761-5.
1994: L Torburn; G P Schweiger; Jacquelin Perry; Christopher M Powers
Below-knee amputee gait in stair ambulation. A comparison of stride characteristics using five different prosthetic feet.
Clinical orthopaedics and related research 1994;(303):185-92.