3What type of joint is the elbow? The elbow is a Radioulnar jointIt is a pivot-type jointThe radial head rotates around the proximalDistal radius rotates around distal ulnaThe angular ligament maintains radial head in its joints
4What is the degree of freedom for the elbow joint? In supination it is 80 – 90 degree’s from neutralIn pronation its 70 – 90 degrees from neutral
5Articulation of which bones make the elbow joint? The elbow is made up of the humerus, ulna, & radius
6Draw diagram representing all the movement of elbow joint and name the plane and axis of each movement.All these movements take place in the saggital and frontal plane
7In what plane does supination and pronation occur? Supination & pronation take place in the sagittal and coronal plane
8What is tennis elbow?Tennis elbow is a common problem where the lateral epicondyle becomes painful and tender. Usually involving the extensor digitorum muscle near its origin on lateral epicondyle. It is also known as lateral epicondylitis and is associated with gripping & lifting activities
9The ligaments of the elbow joint Ulnar collateral ligamentRadial collateral ligamentAnnular ligament
10Normal ranges: Elbow flexion (zero to 150 degrees) Elbow Extension (150 degrees to zero)Supination (zero to 80 or 90 degrees)Pronation (zero to 80 or 90 degrees)
11The ligament injured in hyperextension of the elbow joint is: The ulnar collateral ligament
12Elbow flexion is an example of Third class lever because the biceps brachii applies force at the insertion of the radial tuberosity, the resistance is the center of gravity and the elbow as the axis.
13The Biceps brachialis muscle is The prime mover for flexion of the Elbow jointThe biceps brachialis pulls at the insertion of the radial tuberosity as shown in the previous slide.
21Pronator Teres Movement Weak flexion of elbow Attachments Origin Pronation of forearmWeak flexion of elbowAttachmentsOriginHumerus (Distal)medial condyloid ridgePoximal Ulna (medial)InsertionMiddle third of Radius (lateral)
22Supinator Attachments Movements Supination of the Forearm Origin Lateral epicondyle of humerusUlna (posterior)InsertionProximal radius (lateral) surface below the head