PRESENTATION DURING CLASS ACTIVITY

1. MOVEMENTS AT THE ELBOW
• HUMEROULNAR JOINT
• HUMERORADIAL JOINT
• PROXIMAL AND DISTAL RADIOULNAR SYNDESMOSIS
• OSTEOKINEMATICS
• ARTHROKINEMATICS
• RESPONSIBLE MUSCLES
• ROM AND FUNCTIONAL POSITIONS

2. MOV`TS AT THE ELBOW
• OSTEOKINEMATICS, bone mov`t
• HINGE JOINT, HUMEROULNAR ARTICULATION.
HUMERORADIAL ARTICULATION CLASSIFIED AS A PLANE JOINT AS
SMALL AMOUNT OF GLIDING MOV`T IS FOUND.
MOV`TS OCCUR IN A PLANE ORIENTED SLIGHTLY OBLIQUE TO THE
SAGITTAL PLANE, OWING TO THE ANGULATION OF THE TROCHLEA OF
THE HUMERUS
THE AXIS OF ROTATION FOR THE MOV`TS ARE CENTERED ON THE
TROCHLEA

3. • ARTHROKINEMATICS, joint mov`t
During the movements of the elbow, the concave surface of the
trochlear notch of the ulna glides along the convex trochlea of the
humerus. Simultaneously, at the humeroradial joint, the concave head
of the radius glides along the convex capitulum of the humerus. Both
radial and ulnar articular surfaces glide anteriorly as the elbow flexes
and posteriorly as it extends. At the extremes of the mov`ts, rolling
motions of the ulna and radius replace the gliding motion.

4. • TWO IMPORTANT MOV`TS AT THE ELBOW
a) FLEXION (140°
• REDUCTION OF THE ANGLE BETWEEN THE FOREARM AND THE ARM
• FLEXOR MUSCLES INCLUDE; - BRACHIALIS, BICEPS BRACHII,
BRACHIORADIALIS AND PRONATOR TERES

6. MUSCLE ORIGIN INSERTION INERVATION
BRACHIALIS ANTERIOR SURFACE OF
D/2 HUMERUS
CORONOID PROCESS AND
TUBEROSITY OF ULNA
MUSCULOCUTANEOUS,
C5,C6
BICEPS BRACHII LONG HEAD @ MARGIN
OF SUPRAGLENOID
CAVITY, SHORT HEAD @
CORACOID PROCESS
RADIAL TUBEROSITY,
FASCIA OF FOREARM
MSCULOCUTANEOUS,C5,C
6
BRACHIORADIALIS LT S/C RIDGE OF
HUMERUS
OLECRANON AND
POSTERIOR SURFACE OF
ULNA
RADIAL NERVE, C5,C6
PRONATOR TERES(WEAK
FLEXOR)
HUMERAL SHAFT NEAR
M.EPICONDLE;
CORONOID PROCESS OF
ULNA
LATERAL SURFACE OF
RADIAL SHAFT
MEDIAN NERVE, C6,C7

8. • B) EXTENSION, INCREASING THE ANGLE BETWEEN FOREARM AND
ARM, (0°)
• MUSCLES FOR EXTENSION; - triceps brachii and anconeus

9. MUSCLE ORIGIN INSERTION NERVE SUPPLY
TRICEPS BRACII -inferior margin of glenoid
cavity and joint capsule
-posterior surface of
proximal humerus
-posterior surface of
entire humerus
Olecranon, fascia of
forearm
Radial nerve, C6, C7, C8
ANCONEUS Lateral epicondyle of
humerus
Posterior surface of ulna Radial nerve C6, C7, C8

10. • AT THE PROXIMAL AND DISTAL RADIOULNAR JOINT;
• PRONATION AND SUPINATION OCCUR
• PRONATORS: PRONATOR TERES AND PRONATOR QUADRATUS
• SUPINATORS: SUPINATOR (+biceps assists in heavy load)

11. MUSCLE ORIGIN INSERTION NERVE SUPPLY
PRONATOR TERES HUMERAL SHAFT NEAR
M.EPICONDLE;
CORONOID PROCESS OF
ULNA
LATERAL SURFACE OF
RADIAL SHAFT
MEDIAN NERVE, C6,C7
PRONATOR QUADRATUS ANTERIOR SURFACE
DISTAL ULNA
ANTERIOR SURFACE
DISTAL RADIUS
ANTERIOR INTEROSSEOUS
NERVE, C7, C8
SUPINATOR LATERAL EPICONDYLE OF
HUMERUS, SUPINATOR
CREST OF ULNA
PROXIMAL 1/3 RADIUS RADIAL NERVE C5, C6

12. NORMAL ROM
• FLEXION- 140° MAXIMUM
• EXTENSION- 0°
• PRONATION 61–66°
• SUPINATION 70–77°
• FUNCTIONAL POSITION OF ELBOW JOINT 90°
• FUNCTIONAL POSITION OF FOREARM- MIDPRONE