Carpals Flashcards
Anatomical SNUFF BOX
Lateral - tendons of EPB and ABDUCTOR PL
Medial - tendon of EPL
Floor - SCAPHOID & TRAPEZIUM
RADIAL ARTERY; styloid process of radius; base of 1st metacarpal can be palpated
Carpals (LATERAL TO MEDIAL)
PROXIMAL ROW
- scaphoid/navicular
- lunate
- triquetral
- pisiform
DISTAL ROW
- trapezium
- trapezoid
- capitate
- hamate
Exhibit pain and tenderness localized over the anatomical snuffbox after a fall on the outstretched hand
SCAPHOID FRACTURE
Most commonly dislocated carpal bone; typically dislocated anteriorly; may cause a CARPAL TUNNEL SYNDROME
LUNATE FRACTURE
A fracture of the base of the first metacarpal bone; thumb is forcefully abducted
BENNETT’S FRACTURE
Necks of the second and third metacarpals
BOXER’s fracture
Burning pain/ “pain & needles” along the distribution of MEDIAN NERVE
Thickening of the synovial sheaths of the flexor tendons or arthritic changes of the carpal bones
CARPAL TUNNEL SYNDROME
Localized thickening and contracture of the palmar apeneurosis
Starts-ring finger draws into the palm then little finger FLEXION OF PROXIMAL INTERPHALANGEAL
DUPUYTREN’S CONTRACTURE
A patient complains of sensory loss over the anterior and posterior surfaces of the medial one and one half fingers. What nerve is injured?
RADIAL NERVE
SUPRACONDYLAR fracture
Carpal tunnel syndrome
MEDIAN NERVE
During fractures of medial epicondyle
Wrist abduction during wrist flexion
Medial clawing
ULNAR NERVE
The dermatome at the medial aspect of the Hypothenar eminence?
C8
Area of the skin supplied by the somatosensory fibers from a single spinal nerve; useful in localizing the levels of lesions
C2 - back of head C5 - tip of shoulder C6 - thumb C7 - middle finger C8 - small finger T4-T5 - nipple T10 - umbilicus L1 - inguinal L4 - knee; medial leg L5 - lateral leg; big toe S1 - small toe S5 - perineum
