hypothenar eminence

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Nia

Cards (4)

  • Abductor Digiti Minimi:
    Most superficial of hypothenar muscles
    O: Pisiform, pisohamate and pisometacarpal ligaments and tendon of FCU
    R: Distally
    I: Medial side proximal phalanx of 5th finger and DDE
    A: Abducts 5th finger; assists flexion of 5th MCP joint
    NS: Deep branch ulnar nerve (C(7), 8, T1)
  • Flexor Digiti Minimi Brevis:
    O: Hook of hamate and flexor retinaculum
    R: Distally
    I: Base proximal phalanx of 5th finger
    A: Flexes 5th MCP joint
    NS: Deep branch ulnar nerve (C(7), 8, T1)
  • Opponens Digiti Minimi: Deep to abductor digiti minimi
    O: Hook of hamate and flexor retinaculum
    R: Distally
    I: Medial aspect 5th MC
    A: Opposition of 5th finger
    NS: Deep branch ulnar nerve (C7-T1)
  • Palmaris Brevis:
    O: Medial border of palmar aponeurosis and front of flexor retinaculum
    R: Medially
    I: Skin on medial border of hand
    A: Wrinkles skin on medial aspect of hand and assists thumb in producing a good grip
    NS: Superficial branch ulnar nerve (C(7), 8, T1)