ANATOMY - wrist and hand

Question 1

Structures passing through carpal tunnel

Answer 1

• median nerve
• tendons of flexor digitorum superficialis
• tendons of flexor digitorum profundus
• tendon of flexor policis longs

Question 2

Entrapment median neuropathy

Answer 2

tingling sensation causing paraethesia, pain, numbness around the distribution of the median nerve
Causes: most cases unknown, arthritis, hypothyroidism, obesity, oral contraceptives, mid-palmar space, infection, vascular malformation

Question 3

Ulnar Tunnel

Answer 3

• space at the wrist between the hamate and pisiform bones

- ulnar artery and nerve pass through the tunnel

Question 4

Compression of ulnar nerve in ulnar tunnel

Answer 4

• sensory loss
• medial 1 1/2 fingers
• motor loss
• weakness of intrinsic muscles of the hand
• clawing of the 4th and 5th fingers

Question 5

Joints and ligaments in wrist and hand

Answer 5

• all synovial
• ellipsoid - wrist, biaxial joint
• saddle - first CMJ
• condylar - MCP joint
• hinge - IP (DIP and PIP)
• wrist ligaments
  
  • more strong on the velar side
  • form strng longitudinal, transverse and oblique bonds
  • allow carpal bone motion