Human Anatomy Vol 1

Flexor pollicis brevis (FPB)

Abductor pollicis brevis (APB)

Opponens pollicis (origin)

Abductor pollicis longus

1st palmar lnterosseous (origin)

Opponens pollicis (insertion)

APB + FPB

1st palmar interosseous (insertion)

Adductor pollicis (insertion)

Flexor pollicis longus

T}ee flexor carpi radialis is inserted on a tubercle

on the palmar surface of the base (Fig. 2.38a).

The extensor carpi radialis longus is inserted on

the dorsal surface of the base (Fig. 2.38b).

The oblique head of the adductor pollicis arises from

the palmar surface of the base.

A slip fuorntheflexor carpiradialis is inserted on

the palmar surface of the base.

Extensor carpi radialis longus

Extensor carpi radialiS brevis

Exiensor pollicis brevis

Dorsal interossei

Extensor pollicis longus

Slips of insertion of dorsal

digital expansion

(b)

Figs 2.38a and b: Attachments on the skeleton of hand: (a) Anterior aspect, and (b) posterior aspect

b.

Flexor digiti minimi (FDM)

Flexor carpi ulnaris

Abductor digiti minimi (ADM)

Extensor carpi ulnaris

Opponens digiti minimi

4th palmar interosseous

Adductor pollicis (origin)

ADM+FDM

3rd palmar interosseous

Flexor carpi radialis

Slips of flexor digitorum superficialis

Tendon of flexor digitorum profundus

T}ne extensor carpi radialis breais is inserted on

the dorsal surface of the base, immediately

beyond the styloid process (Fig. 2.38b).

The obliquehead of the adductor pollicis arises from

the palmar surface of the base (Fig. 2.38a).

The transoerse head of the adductor pollicis arises

from the distal two-thirds of the palmar surface

of the shaft (Fig. 2.38a)

2nd a.

b.

C.

3rd a.

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