This study presents a free-fall mechanical supination sprain simulator for evaluating the ankle joint kinematics during a simulated ankle supination sprain injury. The device allows the foot to be in an anatomical position before the sudden motion, and also allows different degrees of supination, or a combination of inversion and plantarflexion. Five subjects performed simulated supination spra...

In children with obstetric brachial plexus palsy (OBPP) who develop an internal rotation deformity of the shoulder, release of subscapularis improves the range of external rotation of the shoulder and the strength of supination of the forearm. We studied the strength of supination in 35 healthy adult volunteers at 45 degrees of both internal and external rotation. The mean and maximum torques w...

BACKGROUND Neurological injuries or disease can impair the function of motor circuitry controlling forearm supination, and recovery is often limited. Preclinical animal models are essential tools for developing therapeutic interventions to improve motor function after neurological damage. Here we describe the supination assessment task, an automated measure of quantifying forelimb supination in...

Dynamic supination of the foot is a common residual deformity in children with clubfeet treated with the Ponseti method. Transfer of the anterior tibialis tendon (ATT) to the lateral cuneiform is an effective method for correcting this deformity when the cuneiform is ossified in children who are 3 to 5 years of age. We describe two cases of a previously unreported method of ATT transposition fo...

The brachialis muscle (BR) represents an important elbow flexor and its activity has so far mainly been measured with intramuscular electromyography (EMG). The aim of this study was to examine whether the activity of the BR can be assessed with surface EMG without interference from the biceps brachii (BB). With eight subjects we measured surface EMG of the arm flexor synergists, BR, BB, and bra...

The continuous passive motion (CPM) device we developed for the elbow joint implements pro-supination of the forearm naturally accompanying flexion and extension of the elbow joint. As the method of making the curative effect due to accompanying pro-supination clear, the range of motion (ROM) of the forearm skeleton are estimated by using of the prosupination model of the forearm skeleton. As t...

The posterior interosseus nerve (PIN) courses in close proximity to the bicipital tuberosity and is at potential risk of injury during distal biceps tendon repair using a single-incision technique with bicortical suspensory button, which has recently gained popularity. Axial non-fat suppressed T1-weighted MRI images elbow obtained ten patients, mean age 39 (range 16-70 years), were used measure...