ELBOW JOINT TYPE OF JOINT 1 IT IS

ELBOW JOINT

TYPE OF JOINT • 1. IT IS SYNOVIAL TYPE, COMPLEX HINGE VARIETY. • 2. IT ALLOWS FLEXIN AND EXRENSION OF FOREARM.

BONES FORMING JOINT • 1. ARTICULAR SURFACE OF TROCHLEA LOWER END OF HUMERUS ARTICULATES WITH ARTICULAR SURFACE OF TROCHLEAR NOTCH OF UPPER END OF ULNA. • 2. ARTICULAR SURFACE OF HEAD OF RADIUS ARTICULATES WITH ARTICULAR SURFACE OF CAPITULUM.

WRIST JOINT COMPOSED OF • 1. HUMERO ULNARTROCHLEAR NOTCH OF ULNA WITH TROCHLEA OF HUMERUS. • 2. HUMERO-RADIAL HEAD WITH CAPITULUM OF LOWER END OF HUMERUS ARTICULATION.

Cubital Articulation

LIGAMENTS OF ELBOW JOINT • 1. CAPSULAR LIGAMENT. • 2. RADIAL COLLATERAL LIG. • 3. ULNAR COLLATERAL LIG. • 4. ANNULAR LIGAMENT.

CAPSULAR LIGAMENT • 1. ANTERIOR ATTACHMENT • 2. ABOVE-TO THE MARGIN OF CORONOID AND RADIAL FOSSA AND IN FRONT OF MEDIAL AND LATERAL EPICONDYL. • 3. BELOW-MARGIN OF CORONOID PROCESS AND TO THE ANNULAR LIGAMENT OF RADIUS.

CAPSULAR LIGAMENT • 1. POTERIORLY ATTACHMENTS • 2. ABOVE-MARGIN OF THE OLECRANON FOSSA OF HUMERUS. • 3. BELOW-MARGINS AND SIDES OF OLECRANON PROCESS AND TO THE ANNULAR LIGAMENT.

ULNAR COLLATERAL LIGAMENT • ATTACHMENT • 1. IT EXTENDS FROM MEDIAL EPICONDYLE OF HUMERUS TO MEDIAL BORDER OF TROCHLEAR NOTCH OF ULNA. • 2. FUNCTION-PREVENTS EXCESSIVE ABDUCTION OF ELBOW JOINT.

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