Adductor Longus Muscle

Fig. 12.32a,b. Combined acute avulsion injury of the adductor longus and brevis. Long-axis 12-5 MHz US images obtained over the insertion of the adductor muscles on the pubis (P) reveals discontinuity with bell-clapper retraction of the proximal tendon (white arrows) of the adductor longus muscle (Add Lg). The torn tendon end is separated from the pubis by a hypoechoic hematoma (asterisks). On a deeper plane, note a hypoechoic cleft (open arrows) at the insertion of the adductor brevis (Add Br) indicating a combined tear of both muscles... 

Palpate the tendon of adductor longus (AL) arising from pubic tubercle (PT) and insert electrode four fingerbreadths distal to tubercle through the adductor longus muscle to about two inches. 

Other mammalian skeletal muscle preparations which have been used for in vitro studies are the extensor digitorum longus of the rat (Zierler, 1959a,b) and fibers of adductor muscles (Beatty et al., 1960), or teased fibers of sternomastoid, sternohyoid, or scalenus muscles of the rat (Hall, 1960). The suitability of these in vitro preparations for studying regulation of glucose uptake has yet to be established. 

The flexor pollicis longus tendon traverses the thenar eminence between the superficial and deep bellies of the flexor pollicis brevis muscle. It then enters the osteofibrous canal of the thumb to insert at the volar aspect of the base of the distal phalanx. At the metacarpal head level, this tendon courses between two sesamoid bones, one (lateral) included in the combined tendon of the flexor pollicis brevis and abductor pollicis longus, the other (medial) in the adductor pollicis tendon. 

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