[Purpose] The purpose of this study was to determine whether a wedge type seat decreases the lumbar flexion angle of seated workers with limited hip flexion. [Subjects] Twelve sedentary workers with limited hip flexion were recruited. [Methods] Three seat surfaces were used: a level surface, a forward-inclining wedge, and a backward-reclining wedge. The angles of lumbar flexion and pelvic tilt ...

Healthy knee kinematics during dynamic full flexion were evaluated using 3D-to-2D model registration techniques. Continuous knee motions were recorded during full flexion in a lunge from 85° to 150°. Medial and lateral tibiofemoral contacts and femoral internal-external and varus-valgus rotations were analyzed as a function of knee flexion angle. The medial tibiofemoral contact translated anter...

We compared the quantitative electromyographic activity of the elbow flexors during four exercises (forced inspiration, forced expiration, trunk flexion and attempted elbow flexion), following intercostal nerve transfer to the musculocutaneous nerve in 32 patients who had sustained root avulsion brachial plexus injuries. Quantitative electromyographic evaluation of the mean and maximum amplitud...

[Purpose] The purpose of this study was to determine the relationship between navicular drop and plantar flexion torque of the first and second-fifth metatarsophalangeal joints. [Subjects] Ten healthy young men participated in this study. [Methods] The Pearson product-moment correlation coefficient was calculated to determine the relationship between navicular drop and plantar flexion torque of...

PURPOSE The purpose of this study is to provide a thorough understanding of the anatomy of the cubital tunnel and to outline specific anatomical parameters of the cubital tunnel retinaculum (CuTR) that might aid in the management of ulnar nerve problems. The hypotheses of this study are (1) that the nerve elongates with elbow flexion and (2) that the cross-sectional area of the cubital tunnel i...

+Minoda Y, Iwaki H, Ikebuchi M, Yoshida T, Iida T, Ikawa T, Yamasaki S, Nakamura H. + Osaka City University Graduate School of Medicine, Osaka, Japan, [email protected] INTRODUCTION: Soft-tissue balancing of the knee is fundamental to the success of total knee arthroplasty (TKA). Preparing equal and rectangular extension and flexion joint gaps is the most important goal in TKA bec...

Flexion-extension x-rays are almost exclusively employed to analyze cervical spine kinematics. Yet, 2D radiographic measures of key vertebral metrics used to evaluate cervical stability are limited by x-ray source beam divergence, magnification errors and off-axis image acquisition. Three-dimensional CT images can be used to accurately measure these parameters, however flexion-extension CT scan...

BackgroundThe rotator cuff (RC) and the deltoid muscle are 2 synergistic units that enable functionally demanding movements of shoulder. A number biomechanical studies assume similar force contribution couple (RC deltoid) over whole range motion, whereas others propose position-dependent distribution. There is a lack in vivo data regarding deltoid's to shoulder flexion abduction strength. This ...