PS 1001:03 Lecture 20: hands and fingers
Understand and describe the function of the hand (including bones,
joints, ligaments)
Understand, describe and measure the normal ROM and movement
patterns of the hand
Joints of the hand
Carpom
etacarp
al CMC
Thumb - saddle
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Opposition, synovial
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Other fingers - gliding
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L2 - The hands and fingers
Tuesday, 1 May 2018
9:02 AM
week 10 Page 1
2-5
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Articulation between distal row of carpals and bases of the 5 metacarpals
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Gliding joints -> flexion/extension
•
2nd-4th
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Saddle joint -> flexion/extension, adb/add, limited opposition
•
5th
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Saddle -> flexion/ext, abd/add, opposition
•
Concave convex joint
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Conjunct axial rotation
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Anterior oblique ligament
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Posterior oblique ligament
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Joint capsule
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Radial carpometacarpal ligament
•
Screen clipping taken: 1/05/2018 9:14 AM
1st
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week 10 Page 2
Abductor pollicis longus
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Anterior oblique ligament tightens
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Intermetacarpal ligament tightens, preventing excessive movements
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Roll follows direction of movement to distal end of limb
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Slide in opposite direction to roll
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Screen clipping taken: 1/05/2018 9:16 AM
Abduction
•
Roll and slide in same direction
○
Medial rotation occurs
▪
Radial collateral = taut
▪
Anterior obl = lax
▪
Flex
○
Anterior obl lig taut
▪
Radial collateral ligament lax
▪
Bit of lateral rotation occurs
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Ext
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Rotation occurs due to shape of articular surfaces NOT muscles
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Flexion/extension
•
week 10 Page 3
Document Summary
Understand and describe the function of the hand (including bones, joints, ligaments) Understand, describe and measure the normal rom and movement patterns of the hand. Other fingers - gliding week 10 page 1. Articulation between distal row of carpals and bases of the 5 metacarpals. Screen clipping taken: 1/05/2018 9:14 am week 10 page 2. Roll follows direction of movement to distal end of limb. Rotation occurs due to shape of articular surfaces not muscles week 10 page 3. Flex/ext - gives additional flexion range in opposition. Instability - shown by inability to oppose thumb and index finger tip week 10 page 4. Structures which provide support during movement, adds stability and more dexterity. Structure and function 1st to 5th similar, slight differences in structure. Abd/add - 20 degs week 10 page 5. Axis oblique so when flex fingers move towards thumb side, helping grip week 10 page 7.
