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Hand - Coggle Diagram
Hand
Palmer Compartment
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Muscles
Lumbricals
- Describe how the lumbricals manage to both flex the MP and extend the PIP & DIP joints.
- Describe the contents of the 5 muscular compartments on the palmar surface of the hand. Include muscles and their attachments and actions, as well as their innervation.
- Why isn’t there a palmar interosseous muscle for the thumb?
Fascia
- What is the palmar aponeurosis?
- What is Dupuytren contracture?
Carpal Tunnel
- What is the carpal tunnel? What does it contain?
- What is carpal tunnel syndrome and how does it present clinically? Describe the boundaries of the carpal tunnel, including its roof.
- Dislocation of which carpal bone may cause carpal tunnel syndrome?
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Guyon's Canal
- What is the ulnar tunnel (Guyon’s canal)? What forms its roof and floor? What travels through it?
Dorsal Compartment
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Extensor Retinaculum
- What forms the 6 compartments on the dorsum of the hand? What covers the tendons passing through these compartments and what is the purpose of this covering?
Muscles
- Why aren’t there dorsal interossei for the thumb and the pinky finger?
Injuries
- What is wrist drop? What nerve is damaged and how does it present clinically?
Innervation
- Summarize the innervation of hand musculature in 2-3 sentences.
- Describe the sensory innervation pattern to the hand
Blood Supply to the Hand
- Provide a description of the arterial supply of the hand, with emphasis on: A) radial & ulnar arteries (know which palmar arch each is mainly responsible for); B) princeps pollicis; C) radialis indicis; D) deep palmar arch; E) palmar metacarpal arteries; F) common palmar digital arteries; G) superficial palmar arch; H) proper (dorsal and palmar) digital arteries.