Comprehensive Overview of Elbow Joint Anatomy by Dr. P.K. Sharma
This detailed resource covers the anatomy of the elbow joint including its articulations, type as a synovial hinge joint, articulating surfaces, ligaments, relations, bursae, stability factors, blood supply, nerve supply, carrying angle, and common conditions like golfer's elbow and tennis elbow. Dr. P.K. Sharma provides valuable insights into the complexity and function of the elbow joint.
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ELBOW JOINT AND RADIO-ULNAR JOINTS DR P K SHARMA
ELBOW JOINT Two articulations Humero-ulnar 1. Humero-radial the complexity of elbow joint is increased by its continuity with superior radio ulnar joint. humero-radial + humero-ulnar = cubital articulation + superior radioulnar 2.
TYPE OF JOINT - synovial joint - hinge variety - compound - typical
ARTICULARSURFACES Capitulum and trochlea of the lower end of humerus Upper surface of head of radius and trochlear notch of ulna
BURSAERELATEDTOELBOWJOINT Subtendinous olecranon bursa Subcutaneous olecranon bursa Bicipitoradial bursa Bursa separating biceps tendon from oblique cord 1. 2. 3. 4. https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcTlYizmlnoMSzhy0sL8D2nvRbUIQC7i3g6BO3odwbfgZMZ6n0Lo8g
STABILITYOFELBOWJOINT Trochlea of humerus fits into trochlear notch of ulna Ulnar collateral ligament Radial collateral ligament 1. 2. 3.
BLOODSUPPLY Anastomosis around elbow joint -brachial artery -radial artery -ulnar artery
NERVESUPPLY Articular branches from - radial nerve - musculocutaneous nerve - ulnar nerve - median nerve
APPLIED Posterior dislocation of elbow
TENNISELBOW (Lateral epicondylitis)
Nerve entrapment - median nerve - ulnar nerve -posterior interosseous nerve
RADIOULNARJOINTS Superior radioulnar joint Middle (interosseous) radioulnar joint Inferior radioulnar joint
ARTICULARSURFACES Circumference of radial head Fibro-osseous ring made by radial notch of ulna and annular ligaments
MUSCLESPRODUCINGSUPINATIONAND PRONATION Supination -supinator biceps brachii brachioradialis Pronation -pronator teres pronator quadratus brachioradialis
MULTIPLE CHOICEQUESTIONS Flexors of elbow joint are 1. a)Biceps b) Brachialis c) Brachioradialis d) All of the above
2) Elbow joint is a type of a) Hinge joint b) Pivot joint Condylar joint d) Ellipsoid joint c)
3) Inferior radioulnar joint is a type of a) Hinge joint b) Pivot joint c) Condylar joint d) Ellipsoid joint
4) Olecrenon bursitis is also called as a) Golfer s elbow b) Student s elbow Tennis elbow d) Pulled elbow elbow c)
5) The triangular relationship between the olecranon and the epicondyles of humerus is lost in a) Supracondylar fracture of humerus b) Student s elbow c) Synovitis of elbow d) Posterior dislocation of elbow
