Transcript The Regional Anatomy of the Upper limb

Ⅳ. The cubital fossa
 It is a triangular depression
at the bend of the elbow.
 The doundaries---laterally--- the brachioradialis;
Medially---the pronator teres;
Speriorly--- the base
An imaginary line between the two humeral epicondyles.
 The contents---- from the lateral to medial sides
radial n. , lateral antebrachial cutaneous n. ,
tendon of biceps brachii, terminal part of brachial a. and vein,
median n.
few deep cubital lymph nodes
which lie at the bifurcation of the artery.
Ⅴ.The carpal canal
 It is formed by the flexor retinaculum and the
groove of the carpal bones;
 It transmits the tendons of
the flexor digitorum superficialis,
the flexor digitorum profundus,
the flexor pollicis longus and
the median nerve.
 The carpal canal syndrome--sensory loss over the lateral 2/3 of the palm and
lateral 32 fingers, atrophy of the thenar m. and
lateral two lumbrical m.
The characteristic deformity is referred to as “ape hand”.
the long thoracic n.
serratus anterior
the musculocutaneous nerve
anterior group of the arm
lateral pectoral nerv
the pectoralis major
medial pectoral nerv
pectoralis minor
the median nerve
the most of anterior group of the
forearm and part muscles of hand
the ulnar nerve
the part of anterior group of the
forearm and part muscles of hand
the radial nerve
posterior group of arm and posterior
group of the forearm
the axillary nerve
the thoracodorsal nerve
deltoid
latissimus dorsi
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1). The musculocutaneous n.
--arises from lateral cord.
--becomes the lateral antebrachial cutaneous n..
--muscular branches innervate the coraco- brachialis, biceps
branchii and brachialis m.
--cutaneous branches is distributed to the skin of the lateral
side of the forearm.
2). The median n.
--arises by two roots, one from the lateral and one from the
medial cord.
--motor fibers innervate the muscles in front of the forearm,
except the brachioradialis, the flexor carpi ulnaris and the
medial half of the flexor digitorum profundus.
--sensory fibers is distributed to the skin of the lateral 2/3
palmar and fingers.
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--“ape-like” hand
3). The ulnar n.
--arises from medial cord.
--muscular branches innervate the flexor carpi ulnaris and the
medial half of the flexor digitorum profundus.
--sensory fibers is distributed to the skin of the medial 1/3
palmar and fingers, as well as the ulnar half of the dorsum of
the hand.
4). The radial n.
--arises from posterior cord.
--muscular branches innervate the muscles of the posterior
groups of the upper limb, as well as the brachioradialis.
--sensory fibers is distributed to the skin on the dorsum of both
the arm and forearm, skin on the radial side of the dorsum of
the hand.
--“wrist drop”
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lateral group（thenar）：
abductor pollicis brevis、
flexor hallucis brevis、
musculus opponens
pollicis、adductor
pollicis。
intermedial：
fidicinales、musculi
interossei palmares、
dorsal interossei——
medial (antithenar）：
abductor digiti minimi、
flexor brevis minimi
digiti、musculus
opponens digiti minim
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