Biomechanics of the wrist and hand
Questions with correct answers
Which carpal bone is the most inherently unstable, distal concave and proximal surface is
convex? - correct answer ✔✔ Lunate
Which carpal bone is important for ulnar wrist stability and articulates with the triangular
fibrocartilage? - correct answer ✔✔ Triquetrum
Which carpal bone is the largest with no ligament attachments and is stable/ the "keystone of
the carpal bones? - correct answer ✔✔ Capitate
Which carpal bone is mostly medial and the palmar surface has a hook? - correct answer ✔✔
Hamate
What is the Dorsal radiocarpal ligament important for? - correct answer ✔✔ Stabilizing the
lunate
What ligaments make up the dorsal radiocarpal ligament? - correct answer ✔✔ radio collateral
ligament and the Ulnar collateral ligament
What are the two intrinsic wrist ligaments? - correct answer ✔✔ Scapholunate and
Lunotriquetral ligaments
What are the joint kinematics of wrist flexion? - correct answer ✔✔ Convex on concave the
carpals will roll palmarly (anterior) and slide dorsally (posterior)
, What is the ligament that refuses wrist flexion? - correct answer ✔✔ dorsal radiocarpal
ligaments
What are the joint kinematics of wrist Extension? - correct answer ✔✔ Convex on concave
carpals will roll dorsally and slide palmary.
What is the ligament that limits wrist extension? - correct answer ✔✔ palmar wrist ligaments
What are the joint kinematics of wrist radial deviation? - correct answer ✔✔ carpals will roll
towards radial side and slide towards ulnar side
What are the joint kinematics of wrist ulnar deviation? - correct answer ✔✔ Carpals will rolls
toward ulnar side and slide towards radial side.
What is the ligament that limits wrist radial deviation? - correct answer ✔✔ Ulnar collateral
ligament and compression of the radial carpals into the radial styloid process
What is the ligament that limits wrist ulnar deviation? - correct answer ✔✔ the radial collateral
ligament and compression of the ulnar carpals into the articular disc.
The movements of the scapholunate are to______. - correct answer ✔✔ flex
The movement of the lunotriquetral joint is to ________. - correct answer ✔✔ extend
What happens to the lunate when the scapholunate ligament is damaged or becomes laxed? -
correct answer ✔✔ lunate is pulled dorsally with the triquetrum
What happens to the lunate when the lunotriquetral ligament is damaged or becomes laxed? -
correct answer ✔✔ lunate is pulled palmary with the scaphoid
Questions with correct answers
Which carpal bone is the most inherently unstable, distal concave and proximal surface is
convex? - correct answer ✔✔ Lunate
Which carpal bone is important for ulnar wrist stability and articulates with the triangular
fibrocartilage? - correct answer ✔✔ Triquetrum
Which carpal bone is the largest with no ligament attachments and is stable/ the "keystone of
the carpal bones? - correct answer ✔✔ Capitate
Which carpal bone is mostly medial and the palmar surface has a hook? - correct answer ✔✔
Hamate
What is the Dorsal radiocarpal ligament important for? - correct answer ✔✔ Stabilizing the
lunate
What ligaments make up the dorsal radiocarpal ligament? - correct answer ✔✔ radio collateral
ligament and the Ulnar collateral ligament
What are the two intrinsic wrist ligaments? - correct answer ✔✔ Scapholunate and
Lunotriquetral ligaments
What are the joint kinematics of wrist flexion? - correct answer ✔✔ Convex on concave the
carpals will roll palmarly (anterior) and slide dorsally (posterior)
, What is the ligament that refuses wrist flexion? - correct answer ✔✔ dorsal radiocarpal
ligaments
What are the joint kinematics of wrist Extension? - correct answer ✔✔ Convex on concave
carpals will roll dorsally and slide palmary.
What is the ligament that limits wrist extension? - correct answer ✔✔ palmar wrist ligaments
What are the joint kinematics of wrist radial deviation? - correct answer ✔✔ carpals will roll
towards radial side and slide towards ulnar side
What are the joint kinematics of wrist ulnar deviation? - correct answer ✔✔ Carpals will rolls
toward ulnar side and slide towards radial side.
What is the ligament that limits wrist radial deviation? - correct answer ✔✔ Ulnar collateral
ligament and compression of the radial carpals into the radial styloid process
What is the ligament that limits wrist ulnar deviation? - correct answer ✔✔ the radial collateral
ligament and compression of the ulnar carpals into the articular disc.
The movements of the scapholunate are to______. - correct answer ✔✔ flex
The movement of the lunotriquetral joint is to ________. - correct answer ✔✔ extend
What happens to the lunate when the scapholunate ligament is damaged or becomes laxed? -
correct answer ✔✔ lunate is pulled dorsally with the triquetrum
What happens to the lunate when the lunotriquetral ligament is damaged or becomes laxed? -
correct answer ✔✔ lunate is pulled palmary with the scaphoid
