Search results
Results from the WOW.Com Content Network
The palmaris longus is a muscle visible as a small tendon located between the flexor carpi radialis and the flexor carpi ulnaris, although it is not always present.Reviews report rates of absence in the general population ranging from 10–20%; however, the rate varies in different ethnic groups.
One study has shown the prevalence of palmaris longus agenesis in 500 Indian patients to be 17.2% (8% bilateral and 9.2% unilateral). [60] The palmaris is a popular source of tendon material for grafts and this has prompted studies which have shown the absence of the palmaris does not have any appreciable effect on grip strength. [61]
Brevis moves the arm from ulnar abduction to its mid-position and flexes dorsally. Longus is a weak pronator in the flexed arm and a supinator in the outstretched arm. At the carpal joints longus acts in dorsiflexion with the extensor carpi ulnaris and in radial abduction with the flexor carpi radialis. These two muscles are called "fist ...
These included the absence of muscles; muscles that were doubled; muscles that were divided into two or more parts; an increase or decrease in the origin or insertion of the muscle; and the joining to adjacent organs. [2] The palmaris longus muscle in the forearm is sometimes absent, as is the plantaris muscle in the leg. [5]
palmaris longus: extrinsic: median superficial: flexor carpi ulnaris: extrinsic: ulnar superficial: pronator teres: intrinsic: median superficial (or intermediate) flexor digitorum superficialis: extrinsic: median deep: flexor digitorum profundus: extrinsic: ulnar + median (as anterior interosseous nerve) deep: flexor pollicis longus: extrinsic
Linburg-Comstock variation - or conjoint flexor pollicis longus and flexor digitorum profundus of the index; Sternalis muscle - or rectus thoracis; Psoas minor muscle; Palmaris profundus muscle; Pterygoideus proprius muscle; Styloauricularis muscle; Transversus nuchae muscle; Accessory popliteus muscle; Tensor fasciae suralis muscle ...
The second compartment is occupied by the two radial wrist extensors, the extensor carpi radialis longus and the extensor carpi radialis brevis. The third compartment exclusively accommodates the extensor pollicis longus, which hooks around Lister's tubercle of radius and inserts to the thumb. The fourth compartment is the largest of all.
The intrinsic muscle groups are the thenar and hypothenar (little finger) muscles; the interossei muscles (four dorsally and three volarly) originating between the metacarpal bones; and the lumbrical muscles arising from the deep flexor (and which are special because they have no bony origin) to insert on the dorsal extensor hood mechanism.