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RA 102 - Chapter 5

Upper Extremity: Hand & Wrist (2)

TermDefinition
Radio-carpal Joint articulation between the carpals and the distal radius
Articulation where two bones come together; joint
Radio-carpal joints are classified as synovial, diarthrotic, ellipsoidal type
PA of the Hand - 10 x 12 crosswise - Patient seated at end of table - Palm down with hand centered to ½ of IR - Fingers separated slightly - CR perpendicular to 3rd MCP joint
PA Oblique of the Hand - Center to other ½ of IR - Palm down - Rotate hand toward 5th digit 45 degrees - Digits should be parallel to IR (when possible, remain straight) - CR perpendicular to 3rd MCP joint
“FAN” Lateral of the Hand - 8x10 - Hand turned and resting on side of 5th digit - Separate digits - Digits 1 & 2 partially open (not closed) - CR perpendicular to 2nd MP joint
PA of the Wrist - 10 x 12 divided into 3 sections - Palm down and fingers flexed (knuckles slightly up) - CR perpendicular to Mid-Carpal area
PA Oblique Wrist - Palm down hand rotated to ulnar side 45 degrees - CR perpendicular to Mid-Carpal area
Lateral of the Wrist - Axilla in contact with table - Upper limb flexed 90 degrees - Entire arm and hand in true lateral - CR perpendicular to Mid-Carpal
Anatomists divide the bones of the upper extremities into the following main groups hand, forearm, arm, and shoulder griddle
The hand consists of 27 bones which consists of the following groups phalanges, metacarpals, carpals
Phalanges bones of the digits; proximal, middle, distal
Metacarpals bones of the palm
Carpals bones of the wrist
Each phalanx has a head, body, and base. True/False true
Each metacarpal has a head, neck, body, and base. True/False true
The metacarpal heads are commonly knows as the knuckles; visible on the dorsal hand in flexion
Where do fractures often occur in the hand at the neck of the metacarpal
How many carpal bones does the wrist have 8 carpal bones arranged in 2 horizontal rows
The carpals are classified a short bones and are composed of largely cancellous tissue with an outer layer of compact bony tissue
The proximal row of carpals, which is nearest to the forearm, contains the: scaphoid, lunate, triquetrum, and pisiform
The distal row of carpals includes the: trapezium, trapezoid, capitate, and hamate
Which carpal bone is the largest in the proximal row the scaphoid
Which carpal bone is the largest in the distal row the capitate
A triangular depression is located on which side of the wrist on the posterior surface of the wrist; visible when the thumb is abducted and extended
The depression, is also know as the anatomic snuff-box
Tenderness in the snuff-box area is a clinical sign suggesting a fracture if the scaphoid, which is the most commonly fractured carpal bone
The radius is located on which side of the forearm on the lateral side
The proximal part of the humerus articulates with the shoulder griddle
What are the articulations (joints) between the phalanges the interphalangeal (IP), a synovial hinge type that allows only flexion and extension
What are PIP and DIP - proximal interphalangeal - distal interphalangeal
Where do the metacarpals articulate with the phalanges at their distal ends and the carpals at their proximal ends
The MCP articulations are classified as which synovial and ellipsoidal joints and have movements of flexion, extension, abduction, adduction, and circumduction
The intercarpal articulations are also synovial joints. True/False true
Which type is the radiocarpal articulation classified as synovial ellipsoidal
The distal and proximal radioulnar articulations are classified as which type synovial pivot joints
Created by: nycems
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