Hand Lecture Part 1
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1
what are the components of the hand
complex structure includes thumb, palm, and digits
2
Hand Overview
bones:
number of primary joints:
bones:
number of primary joints:
bones: 27
number of primary joints: 19
number of primary joints: 19
3
what are the primary structures in the hand
complex system of soft tissue, nerves, intrinsic and extrinsic muscles
4
what are the key functions of the hand
- primary function for human body
- primary function of other joints in UE is stability for hand function
- primary function of other joints in UE is stability for hand function
5
what is the purpose of the hand
- fine motor: precise controlled motions
- manipulation
- interaction with environment
- sensory input
- manipulation
- interaction with environment
- sensory input
6
how are the digits measured
1-5 start with thumb
7
how are the metacarpals measured
1-5 start with thumb
8
naming of the phalanges
proximal, middle and distal
9
what digits have CMC joints
1-5
10
what digits have MCP joints
1-5
11
what digits have IP joints
thumb
12
what digits have PIP joints
digits 2-5
13
what digits have DIP joints
digits 2-5
14
does the middle finger abduct or adduct
does not adduct, just abducts
15
what are the MCP motions
flexion/extension
abduction/adduction
abduction/adduction
16
what are the PIP motions
flexion/extension
17
what are the DIP motions
flexion/extension
18
what are the motions of the 5th digit special motion
opposition
19
what are the creases of the hand
distalpalmar crease
thenar crease
wrist crease
thenar crease
wrist crease
20
what is the clinical significance of the creases in the hand and wrist
edema measurements
orthotic fabrication
orthotic fabrication
21
what are the arches of the hand
longitudinal arch
distal transverse arch
proximal transverse arch
distal transverse arch
proximal transverse arch
22
what is the purpose of the arches in the hand
allow for strength and increased surface area
23
what is the relationship of arches in the hand with hand function
holding a ball, holding curved objects
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