E LBOW JOINT AND RADIO - ULNAR JOINTS D R P K S HARMA.
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Transcript of E LBOW JOINT AND RADIO - ULNAR JOINTS D R P K S HARMA.
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ELBOW JOINT AND RADIO-ULNAR JOINTS
DR P K SHARMA
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ELBOW JOINT Two articulations –
1. Humero-ulnar
2. 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
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TYPE OF JOINT
- synovial joint- hinge variety- compound- typical
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ARTICULAR SURFACES
Capitulum and trochlea of the lower end of humerus
Upper surface of head of radius and trochlear notch of ulna
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LIGAMENTS
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RELATIONS
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BURSAE RELATED TO ELBOW JOINT
1. Subtendinous olecranon bursa2. Subcutaneous olecranon bursa3. Bicipitoradial bursa4. Bursa separating biceps tendon from
oblique cord
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STABILITY OF ELBOW JOINT
1. Trochlea of humerus fits into trochlear notch of ulna
2. Ulnar collateral ligament3. Radial collateral ligament
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BLOOD SUPPLY
-brachial artery -radial artery -ulnar artery
Anastomosis around elbow
joint
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NERVE SUPPLY
Articular branches from
- radial nerve - musculocutaneous
nerve - ulnar nerve - median nerve
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CARRYING ANGLE
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APPLIED Posterior dislocation of elbow
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GOLFER’S ELBOW (Medial epicondylitis)
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TENNIS ELBOW(Lateral epicondylitis)
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PULLED ELBOW
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STUDENT’S ELBOW
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DISTENSION (EFFUSION)OF ELBOW JOINT
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Nerve entrapment - median nerve - ulnar nerve -posterior interosseous nerve
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RADIO ULNAR JOINTS
Superior radioulnar joint
Middle (interosseous) radioulnar joint
Inferior radioulnar joint
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ARTICULAR SURFACES Circumference of radial head Fibro-osseous ring made by radial notch of
ulna and annular ligaments
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BLOOD SUPPLY
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SUPINATION AND PRONATION
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MUSCLES PRODUCING SUPINATION AND PRONATION
Supination -supinator biceps brachii brachioradialis
Pronation -pronator teres pronator quadratus brachioradialis
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MULTIPLE CHOICE QUESTIONS
1. Flexors of elbow joint area)Bicepsb) Brachialisc) Brachioradialisd) All of the above
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2) Elbow joint is a type of
a) Hinge jointb) Pivot jointc) Condylar jointd) Ellipsoid joint
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3) Inferior radioulnar joint is a type of
a) Hinge jointb) Pivot jointc) Condylar jointd) Ellipsoid joint
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4) Olecrenon bursitis is also called as
a) Golfer’s elbowb) Student’s elbowc) Tennis elbowd) Pulled elbow elbow
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5) The triangular relationship between the olecranon and the epicondyles of humerus is lost in
a) Supracondylar fracture of humerusb) Student’s elbowc) Synovitis of elbowd) Posterior dislocation of elbow
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Thank you