Decreased Pulsatile Blood Flow in the Patella in Patellofemoral Pain Syndrome
Jan Näslund, Markus Waldén and Lars-Göran Lindberg The objective of this study was to investigate whether fllexing the knee joint interferes with the perfusion of the patellar bone in patellofemoral pain syndrome. 22 patients with patellofemoral pain syndrome were examined bilaterally, and 33 subjects with healthy knees served as controls. Pulsatile blood flow in the [...]
The association between patella alignment and knee pain and function: an MRI study in persons with symptomatic knee osteoarthritis
L. Kalichman, Y. Zhu, Y. Zhang, J. Niu, D. Gale, D.T. Felson and D. Hunter The aim of the study was to examine the association between patellofemoral (PF) alignment and knee pain and function. Patellar alignment (measured using standard magnetic resonance imaging (MRI) images of extended knees) and pain and function (measured with the WOMAC [...]
Patella alta: association with patellofemoral alignment and changes in contact area during weight-bearing.
Ward SR, Terk MR, Powers CM This study compared patellofemoral joint alignment and contact area in subjects who had patella alta with subjects who had normal patellar position, to determine the effect of high vertical patellar positions on knee extensor mechanics. Twelve subjects with patella alta and thirteen control subjects had lateral [...]
Knee instability after acute ACL rupture affects movement patterns during the mid-stance phase of gait.
Hurd WJ, Snyder-Mackler L The purpose of this study was to identify gait asymmetries during the mid-stance phase of gait among subjects with knee instability ("non-copers") after acute anterior cruciate ligament (ACL) rupture. Twenty-one non-copers with acute, isolated ACL injury ambulated at their intentional walking speed as kinetic, kinematic, and electromyographic (EMG) data were collected [...]
Muscle contribution to elbow joint valgus stability.
Lin F, Kohli N, Perlmutter S, Lim D, Nuber GW, Makhsous M Repetitive valgus stress of the elbow can result in excessive strain or rupture of the native medial ulnar collateral ligament (MUCL). The flexor-pronator mass (FPM) may be particularly important for elbow valgus stability in overhead-throwing athletes. The aim of this study was to [...]
Biomechanical differences between unilateral and bilateral landings from a jump: gender differences.
Pappas E, Hagins M, Sheikhzadeh A, Nordin M, Rose D The objective of this study was to determine the effect of landing type (unilateral vs. bilateral) and gender on the biomechanics of drop landings in recreational athletes. Sixteen female and 16 male recreational athletes performed bilateral and unilateral landings from a 40-cm platform. Kinetic, kinematic, [...]
Shoulder kinematic features using arm elevation and rotation tests for classifying patients with frozen shoulder syndrome who respond to physical therapy.
Yang JL, Chang CW, Chen SY, Lin JJ Physical therapy is an intervention commonly used in the treatment of subjects with frozen shoulder symptoms, with limited proven effect. The purpose of this study was to identify the kinematic features of patients with frozen shoulder who are more likely to respond to physical therapy. Thirty-four subjects [...]
Does the Evidence Support the Existence of Lumbar Spine Coupled Motion? A Critical Review of the Literature
Cook C, Sizer P, Brismée JM, Showalter C, Huijbregts P The objective of this study was to synthesize the current literature addressing coupled motion between side bending and rotation in the lumbar spine to deterÂmine if a consistent pattern exists across articles. Using OVID databases, articles published between 1982 and 2006 that addressed coupled motion [...]
Carpal Kinematics During Simulated Active and Passive Motion of the Wrist
Rita M. Patterson, Laura Williams, Clark R. Andersen, Shukuki Koh and Steven F. Viegas The purpose of this study was to investigate the effect of experimental control mechanisms, simulated active (tendon-driven) and passive (externally assisted), on carpal motion. Kinematics of the carpal bones in five fresh-frozen cadaver upper extremities were studied using an optical motion [...]
Biomechanical effects of foot orthoses during walking
Alex Stacoff, Inès Kramers-de Quervain, Markus Dettwyler, Peter Wolf, Renate List, Thomas Ukelo and Edgar Stüssi The purpose of this study was to quantify kinetic and kinematic effects during the stance phase of walking using three different foot orthoses. All test subjects were measured under five test conditions with 10 repetitions each. The test conditions [...]
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