Standing, sitting or lying supine
Anterior to the patient.
May I touch your hand? ( or point to the demonstrated area ).
Please bend your elbow and turn your palm down. Bring your index finger out to the side and toward your thumb (or demonstrate, which is easier). (If needed, hold in this position while I try to move your index finger.)
The dorsal interossei muscle group consists of four muscles ñ the first, second, third and fourth dorsal interosseous muscles. The first dorsal interosseous abducts the index finger or finger 2, the second dorsal interosseous abducts the middle finger or finger 3 and moves it toward the index finger, the third dorsal interosseous abducts the middle finger and moves it toward the ring finger, and the fourth dorsal interosseous abducts the ring finger toward the little finger.
Guide the patient to bend the elbow and pronate. The first dorsal interosseous muscle is the only easily palpable portion of the dorsal interossei group. With the first dorsal interosseous muscle relaxed, palpate the dorsal aspect of the lateral side of the index finger and guide the patient to abduct the metacarpophalangeal joint of the index finger. With unclear muscle activity, provide added resistance by having the patient ìholdî while you gradually produce a push on the proximal phalanx of the index finger in the direction of adduction.
While not shown in the video, the muscle also can be palpated during proximal and distal interphalangeal extension of the index finger, especially with the metacarpophalangeal joint flexed.
Guide the patient to bend the elbow and pronate. The first dorsal interosseous muscle is the only easily palpable portion of the dorsal interossei group. With the first dorsal interosseous muscle relaxed, palpate the dorsal aspect of the lateral side of the index finger and guide the patient to abduct the metacarpophalangeal joint of the index finger. With unclear muscle activity, provide added resistance by having the patient ìholdî while you gradually produce a push on the proximal phalanx of the index finger in the direction of adduction.
While not shown in the video, the muscle also can be palpated during proximal and distal interphalangeal extension of the index finger, especially with the metacarpophalangeal joint flexed.
VH -