Term
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Definition
O: Flexor Retinaculum: Palmar aponeurosis
I: Skin at ulnar side of hand
Inn: Ulnar Nerve(Superficial branch)
Action: Draws skin at ulnar side of palm toward middle of hand |
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Term
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Definition
O: Pisiform: Tendon of Flexor Carpi Ulnaris
I: Base of proximal phalanx of 5th digit
Inn: Ulnar Nerve(deep palmar branch)
Action: Abducts 5tth digit |
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Term
| Flexor Digiti Minimi Brevis |
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Definition
O: Hook of hamate: Flexor retinaculum
I: Base of Proximal Phalanx of 5th digit
Inn: Ulnar Nerve
Action: Flexes proximal phalanx of 5th digit |
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Term
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Definition
O: Hook of Hamate, Flexor Retinaculum
I: 5th Metacarpal
Inn: Ulnar nerve(deep palmar branch)
Action: Draws 5th metacarpal forward to face thumb: Deepens hollow of hand |
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Term
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Definition
O: Scaphoid, Trapezium, Flexor Retinaculum
I: Base of Proximal Phalanx of Thumb
Inn: Median nerve (Recurrent branch) |
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Term
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Definition
O: Trapezium, Flexor retinaculum
I: Base of proximal phalanx of thumb
Inn: Median Nerve (Recurrent branch)
Action: Flexes proximal phalanx of thumb. |
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Term
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Definition
O: Trapezium, Flexor Retinaculum
I: Radial side of shaft of 1st met
Innervation: Median Nerve(Recurrent brach)
Action: Abducts, flexes, and medially rotates 1st metacarpal |
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Term
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Definition
O: (oblique head) Trapezium, trapezoid, capitate, bases of 2nd and 3rd metacarpals.
(Transverse head) Ant. Surface of 3rd metacarpal
I: Base of Proximal phalanx of thumb.
Innervation: Ulnar nerve (deep palmar branch)
Action: Adducts thumb at CMC and MCP joints. |
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Term
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Definition
O: Tendon of flexor digitorum profundus
I: Extensor expansion hoods of digits 2-5
Inn: Ulnar nerve(Medial two) Median Nerve(Lateral two)
Action: Flexes MCP joint, Extends interphalangeal joints. |
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Term
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Definition
O: Unipennate attachments from palmar surface of metacarpals 2,4,5
I: Extensor expansion hoods of digits 2,4,5
Innervation: Ulnar nerve deep palmar branch.
Action: Adduct digit 2,4,5 (also important in maintaining interphalangeal extension with MCP flexion) |
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Term
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Definition
O: Bipennate attachment from adjacent metacarpals
I: Bases of proximal phalanges 2-4 (also extensor expansion hoods)
Inn: Ulnar nerve (deep plamar branch)
Action: Abducts digit 2-4: Also acts on extensor expansion. |
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