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Wrist

Wrist. 1. Name the primary wrist flexors and extensors. . 3 wrist flexors flexor carpi radialis flexor carpi ulnaris palmaris longus. 3 wrist extensors extensor carpi radialis longus extensor carpi radialis brevis extensor carpi ulnaris. 2. What type of joint is the wrist?.

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Wrist

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  1. Wrist

  2. 1. Name the primary wrist flexors and extensors. • 3 wrist flexors • flexor carpiradialis • flexor carpiulnaris • palmarislongus • 3 wrist extensors • extensor carpiradialislongus • extensor carpiradialisbrevis • extensor carpiulnaris

  3. 2. What type of joint is the wrist? Condyloid-type joint

  4. 3. What is the degree of freedom for the wrist joint? Flexion – 70-90 degrees Extension – 65-85 degrees Abduction – 15-20 degrees Adduction – 25-40 degrees

  5. 4. Articulation of which bones makes the wrist joint? Articulation primarily occurs between the distal radius and the proximal carpal row (scaphoid, lunate, triquetrum)

  6. 5. Draw a diagram representing all the movement of the wrist joint and name the plane and axis of each movement.

  7. 6. Label the bones Metacarpals Hamate Trapezium Triquetrum Trapezoid Scaphoid Pisiform Lunate Capitate

  8. 7. Name the ligaments of the metacarpophalangeal and interplalangeal joint. • Interphalangeal Joint • Collateral Ligament • Palmar Ligament • Metacarpophalangeal Joint • Collatoral Ligament • Palmar Ligament • Deep Transverse Metacarpal Ligament

  9. 8. Name the movement demonstrated in the figure. Palmar Flexion

  10. 9. What is Carpal Tunnel Syndrome? • Carpal tunnel syndrome • Swelling & inflammation can cause increased pressure in carpal tunnel resulting in decreased function of median nerve leading to reduced motor & sensation function in its distribution • particularly common with repetitive use of the hand and wrist in manual labor and clerical work such as typing and keyboarding • Often, slight modifications in work habits and hand & wrist positions during these activities can be preventative • Flexibility exercises for the wrist & finger flexors may be helpful

  11. 10. Name the ligaments of the wrist joint. The book said there were too numerous to mention in this discussion.

  12. 11. What is the normal range of? • Wrist Flexion • 0 to ± 80 degrees • Wrist Extension • 0 to ± 70 degrees • Ulnar Deviation • 0 to 30 degrees • Radial Deviation • 0 to 20 degrees

  13. 12. Name the ligament to be injured in hyperextension of the Proximal Interphalengreal Joint. Collateral Ligament

  14. 14. How can you strengthen the flexor carpiulnaris muscle? The flexor carpiulnaris is important in wrist flexion or curling activities. It is one of only two muscles involved in wrist adduction or ulnar flexion. It may be strengthened with any type of wrist-curling activity against resistance.

  15. 15. If ulnar nerve gets injured the which movement is likely to be affected? • The ulnar nerve assists the flexor carpiulnaris in • Flexion of the wrist • Adduction of the wrist • Weak flexion of the elbow therefore these movements would be most affected if the ulnar nerve gets injured.

  16. 16. If there is contracture of wrist flexors then which movement will not take place in its full range? Opposition will not take place in its full range of motion.

  17. 17. During the concentric contraction of wrist flexors, which type of contraction will take place in wrist extensors? Eccentric Contraction

  18. 18. If you hold a cup tightly then which type of contraction occurs? Isometric Contraction

  19. 19. Which movement is demonstrated in the figure? A – wrist flexion B – wrist extension

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