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It manifests in abnormal and stereotypical patterns across multiple joints called obligatory synergies. [1] They are described as either a flexion synergy or an extension synergy and affect both the upper and lower extremity (see below). [1] When these patterns occur in a patient, he or she is unable to move a limb segment in isolation of the ...
Tenodesis grasp and release is an orthopedic observation of a passive hand grasp and release mechanism, affected by wrist extension or flexion, respectively.It is caused by the manner of attachment of the finger tendons to the bones and the passive tension created by two-joint muscles used to produce a functional movement or task (tenodesis). [1]
In human anatomy, the dorsal interossei (DI) are four muscles in the back of the hand that act to abduct (spread) the index, middle, and ring fingers away from the hand's midline (ray of middle finger) and assist in flexion at the metacarpophalangeal joints and extension at the interphalangeal joints of the index, middle and ring fingers. [1]
The rotator cuff muscles of the shoulder produce a high tensile force, and help to pull the head of the humerus into the glenoid cavity. The glenoid cavity is shallow and contains the glenoid labrum which deepens it and aids stability. With 120 degrees of unassisted flexion, the shoulder joint is the most mobile joint in the body.
A dislocated shoulder can be treated with: arthroscopic repairs; repair of the glenoid labrum (anterior or posterior) [1] In some cases, arthroscopic surgery is not enough to fix the injured shoulder. When the shoulder dislocates too many times and is worn down, the ball and socket are not lined up correctly.
In anatomy, flexor is a muscle that contracts to perform flexion (from the Latin verb flectere, to bend), [1] a movement that decreases the angle between the bones converging at a joint. For example, one's elbow joint flexes when one brings their hand closer to the shoulder, thus decreasing the angle between the upper arm and the forearm.
Originally considered a salvage procedure, the combination of improved design features and excellent clinical outcome data has led to reverse shoulder replacement largely replacing shoulder hemiarthroplasty for most indications, [3] and even challenging conventional anatomic shoulder replacement in many countries as the most commonly performed ...
Cunningham shoulder reduction was originally published in 2003 [1] and is an anatomically based method of shoulder reduction that utilizes positioning (analgesic position), voluntary scapular retraction, and bicipital massage. It is designed for true anterior/subcoracoid glenohumeral dislocations in patients who can fully adduct their humerus. [2]