My Class

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IE 552 Mechanics of Musculoskeletal System Dr.
Andris Freivalds Class 23
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Ch. 5 - Models of Upper Limbs

• Hand
• 27 bones
• 8 carpal
• 5 metacarpal
• 14 phalanges
• 15 joints
• 1 CMC
• 5 MCP
• 4 PIP
• 5 DIP

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Extrinsic Muscles Flexors
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Extrinsic Muscles Extensors
5
Intrinsic Muscles
Dorsal view
Palmar view
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FDP and FDS Tendons
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Tendon Pulley Structure (A annular, C
cruciate)
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Wrist Mechanics

• Flexion FCR, FCU
• Extension ECRB, ECRL, ECU
• Radial deviation FCR, ECRB, ECRL
• Ulnar deviation FCU, ECU

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Landsmeer Tendon-Pulley Models I,II
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Landsmeer Tendon-Pulley Model III
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Armstrong Tendon- Pulley Model
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Dynamic Tendon-Pulley Models