thenar muscle


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Related to thenar muscle: Hypothenar muscle

thenar muscle

The abductor or flexor muscle of the thumb.
See also: muscle
References in periodicals archive ?
[7] suggest that as motor fibers of median nerve to thenar muscles course more superficially and anteriorly than lumbrical motor fibers inside the carpal tunnel, they are more likely to be affected from the compression under the flexor retinaculum.
Whether the main reason for the motor weakness was pain or thenar muscle disturbance is unclear.
Table 1 Overview of the rehabilitative exercises prescribed in this case EXERCISE INSTRUCTIONS * Thenar muscle group * 15-20 second holds, 8-10 reps stretches (Figure 1) for each respective stretch, * Forearm extensor/ 5 x/wk.
The numbness usually begins in the thick muscle just below the thumb, termed the thenar muscle, affecting primarily the dominant hand.
CMT patients showed diminished or absent tendon reflexes (100.0%), pes cavus (85.3%), drop foot (85.3%), and claw hand (32.4%), as well as bilateral atrophy of the first dorsal interosseous muscle (85.3%), bilateral thenar muscle atrophy (58.8%), hypothenar muscle atrophy (bilateral 47.1%, unilateral 2.9%), gastrocnemius atrophy (bilateral 47.1%, unilateral 2.9%), and anterior tibial muscle atrophy (bilateral 52.9%, unilateral 5.9%).
(9) Humans also have an increased relative thenar muscle mass and increased thenar muscle strength compared to our closest relatives, in addition to a relatively long thumb compared to the length of the hand, making precision grip and opposition easier.
Recovery in thenar muscle function was good, fair and poor in 5, 2 and 10 cases after median nerve repair, while all 12 patients with ulnar nerve lesion showed some degrees of clawing of 4th and 5th fingers.
The hand of each patient was placed in the supine position and a 25 mm length light probe was placed on the skin over the thenar muscle via a single-use patch.
Anastomosis between the deep branch of ulnar nerve and a branch of the median nerve (Cannieu-Riche anastomosis) and thenar muscles innervation.