Optimal function following elbow replacement surgery is dependent on the accurate replication of the elbow's flexion-extension axis. Currently, position and orientation of the axis are estimated from visual landmarks. In order to develop computer-assisted techniques to more accurately define this axis, a surface-based registration technique employing a hand-held laser scanner was evaluated agai...

Nerve injury in the hindlimb of the cat results in locomotor changes, yet these findings have not been explored in a more multifunctional forelimb. Kinematics and muscle activity of the shoulder and elbow during level and upslope locomotion following reinnervation of the feline long head of the triceps brachii (TLo) were evaluated (1) during paralysis [none to minimum motor activity (short-term...

BACKGROUND Elbow pain and elbow injuries are common in youth baseball players. It is not clear whether pitching experience and/or age creates biomechanical differences at the elbow and whether these differences place an athlete at greater risk. HYPOTHESES (1) Youth pitchers will have differing elbow kinematics with regard to flexion/extension, internal/external rotation, and pronation/supinat...

Gravity-compensated extremity joint torque values were measured in approximately 1,000 healthy Japanese to test the hypothesis that young people in Japan have less muscle strength than older people. The extremity joint torque values of the women in their 20s were significantly lower than those of the women in their 40s, 50s, and/or 60s for six extremity joint torque parameters: wrist palmer fle...

This study determined the relationship between the medullary canal axis and the flexion-extension axis of the distal humerus as they relate to implant selection and design for elbow arthroplasty. Computed tomography scans of 40 fresh-frozen cadaveric specimens were analyzed with computer-aided design software. The anterior offset and cubital angle were measured between the 2 axes, and the cross...

Sedentary adult males with spinal lesions, all habitual wheelchair users, were allocated to exercise (n = 11) and control (n = 4) groups. A Cybex II dynamometer was used to assess peak power, average power, total work and muscular endurance for elbow flexion/extension, shoulder flexion/extension and shoulder abduction/adduction at five angular velocities, on recruitment and after eight and 16 w...

Pediatric post-traumatic elbow contracture can occur as result of the various injuries of area of the elbow joint. The aim of the study was to investigate the effect of the physical therapy and rehabilitation on the range of the motion of the elbow joint in the post-traumatic elbow contractures in the childhood. We analyzed in this research 54 children (average age 9,4+/-3,15 years) that were t...

BACKGROUND Optimal treatment of superior labral anterior-posterior (SLAP) tears is controversial, in part because the dynamic role of the long head of the biceps muscle (LHBM) in the glenohumeral joint is unclear. The aim of this study was to determine dynamic LHBM behavior during shoulder activity by studying (1) the electromyographic activity of the LHBM during shoulder motion, (2) the effect...

We have assessed the reliability of hand-held myometry in 33 patients with spinal muscular atrophy (SMA), testing elbow flexion, handgrip, three-point pinch, knee flexion, knee extension, and foot dorsiflexion, and determining intraclass correlation coefficients (ICC). Interrater reliability was high for upper limbs, with an ICC of 0.92 for three-point pinch and 0.98 for elbow flexion and grip....

soft tissue abnormality. Radiographs are unnecessary unless another particular injury is suspected. Edema and tenderness are present with supracondylar fractures. A number of reduction techniques are used, including the hyperpronation method and the supination-flexion method. The hyperpronation method has proved more effective and appears to be less traumatic. With the arm held in extension, th...