Anatomy of Carpal Joints

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Questions and Answers

What type of joint is the distal radio-ulnar joint?

  • Hinge joint
  • Saddle joint
  • Ball-and-socket joint
  • Synovial pivot joint (correct)

What is the function of the ligaments in the distal radio-ulnar joint?

  • To weaken the joint capsule
  • To strengthen the joint capsule (correct)
  • To separate the ulna and radius
  • To attach the joint to the surrounding muscles

What is the purpose of the articular disc in the distal radio-ulnar joint?

  • To attach the joint to the surrounding muscles
  • To weaken the joint ligaments
  • To separate the ulna and distal radioulnar joint from the wrist joint (correct)
  • To strengthen the joint capsule

What is the function of the capsule in the distal radio-ulnar joint?

<p>To enclose the joint and provide additional support (B)</p> Signup and view all the answers

What is the significance of the synovial membrane in the distal radio-ulnar joint?

<p>It lines the joint capsule (C)</p> Signup and view all the answers

What is the relation of the articular disc in the distal radio-ulnar joint?

<p>It is attached to the lateral side of the styloid process (C)</p> Signup and view all the answers

What type of joint is the Carpo-metacarpal joint of the thumb?

<p>Synovial saddle joint (C)</p> Signup and view all the answers

What type of movement occurs at the Carpo-metacarpal and Intermetacarpal joints?

<p>Gliding (C)</p> Signup and view all the answers

Which muscle assists in the movement of abduction at the Metacarpophalangeal joint?

<p>Abductor pollicis brevis (B)</p> Signup and view all the answers

What ligaments support the Carpo-metacarpal and Intermetacarpal joints?

<p>All of the above (D)</p> Signup and view all the answers

What movement occurs at the Interphalangeal joint of the thumb?

<p>Extension and Flexion (D)</p> Signup and view all the answers

Which muscle is responsible for opposition at the Metacarpophalangeal joint?

<p>Opponens pollicis (C)</p> Signup and view all the answers

What type of joints are the Metacarpophalangeal joints?

<p>Synovial condyloid joints (D)</p> Signup and view all the answers

What is the function of the deep transverse metacarpal ligaments?

<p>To hold the heads of metacarpals together (D)</p> Signup and view all the answers

Which muscle is responsible for flexion of the thumb?

<p>Flexor pollicis longus (A)</p> Signup and view all the answers

What type of joints are the Interphalangeal joints?

<p>Synovial hinge joints (D)</p> Signup and view all the answers

Which muscle is responsible for extension of the index finger?

<p>Extensor indicis (D)</p> Signup and view all the answers

What is a common complication of a scaphoid fracture?

<p>Avascular necrosis of the proximal scaphoid (B)</p> Signup and view all the answers

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