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18 Questions

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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?

To enclose the joint and provide additional support Signup and view all the answers

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

It lines the joint capsule Signup and view all the answers

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

It is attached to the lateral side of the styloid process Signup and view all the answers

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

Synovial saddle joint Signup and view all the answers

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

Gliding Signup and view all the answers

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

Abductor pollicis brevis Signup and view all the answers

What ligaments support the Carpo-metacarpal and Intermetacarpal joints?

All of the above Signup and view all the answers

What movement occurs at the Interphalangeal joint of the thumb?

Extension and Flexion Signup and view all the answers

Which muscle is responsible for opposition at the Metacarpophalangeal joint?

Opponens pollicis Signup and view all the answers

What type of joints are the Metacarpophalangeal joints?

Synovial condyloid joints Signup and view all the answers

What is the function of the deep transverse metacarpal ligaments?

To hold the heads of metacarpals together Signup and view all the answers

Which muscle is responsible for flexion of the thumb?

Flexor pollicis longus Signup and view all the answers

What type of joints are the Interphalangeal joints?

Synovial hinge joints Signup and view all the answers

Which muscle is responsible for extension of the index finger?

Extensor indicis Signup and view all the answers

What is a common complication of a scaphoid fracture?

Avascular necrosis of the proximal scaphoid Signup and view all the answers