MEval Midterms

It is the major determinant of elbow stability

• radiohumeral joint

• ulnohumeral joint

• Distal radioulnar joint

• Proximal radioulnar joint

Superior radioulnar joint is classified as

• Uniaxial pivot joint

• Biaxial pivot joint

• Uniaxial hinge joint

• Biaxial hinge joint

Axis of movement for Ulnohumeral joint

• posterior and medial

• downward and lateral

• superior and lateral

• downward and medial

Degrees of rotation in Superior Radioulnar joint

• 10 degrees IR in early flexion, 10 degrees ER in late flexion

• 10 degrees IR in early flexion, 5 degrees ER in late flexion

• 5 degrees IR in early flexion, 5 degrees ER in late flexion

• 15 degrees IR in early flexion, 10 degrees ER in late flexion

Resting position of ulnohumeral joint

• 90° elbow flexion, 5° supination

• 70° elbow flexion, 10° supination

• 75° elbow flexion, 15° supination

• 70° elbow flexion, 35° supination

Close packed position of ulnohumeral joint

• extension with supination

• elbow flexed to 90°, forearm supinated to 5°

• 5° supination

• extension with pronation

capsular pattern of ulnohumeral joint

• flexion, extension, supination, pronation

• equal limitation of supination and pronation

• flexion, extension

• flexion, extension, supination

Resting position of radiohumeral joint

• 70° elbow flexion, 10° supination

• 35° supination, 70° elbow flexion

• full extension and full supination

• elbow flexed to 90°, forearm supinated to 5°

Close packed position of radiohumeral joint

• elbow flexed to 90°, forearm supinated to 5°

• extension with supination

• full supination and full extension

• elbow flexed to 90°, forearm supinated to 10°

Capsular pattern of radiohumeral joint

• flexion extension

• equal limitation of supination and pronation

• flexion, extension, supination, pronation

• flexion, extension, pronation, supination