Elbow Joint Flashcards
What is the definition of the Elbow Joint?
This is a Hinge Joint formed by the Trochlea and Capitulum of the Humerus, The trochlear notch of the Ulna and the Head of the Radius.
What are all the Anatomical Components of the Elbow Joint?
1: Articular Capsule
2: Ulnar Collateral ligament
3: Radial Collateral ligament
4: Anular ligament of the Radius
What type of movements does the Elbow joint Perform?
The Elbow joint allows for Extension and flexion of the Forearm.
What are the components of the Articular Capsule of the elbow Joint?
There is an anterior portion that covers from the Radial and coracoid fossa - to the Coronoid process of the ulna and the Angular ligament of the Radius.
And a Posterior portion.
What are the components of the Articular Capsule of the elbow Joint?
There is an Anterior and posterior portion of the Articular Capsule.
Where is the Anterior portion of the Articular Capsule located?
It is from the Radial and Coronoid Fossae of the Humerus - to the Coronoid process of the Ulna and the Angular ligament of the Radius.
Where is the Posterior portion of the Articular capsule located in the Elbow joint?
It Extends from the capitulum, Ollecranon fossa, and lateral Epicondyle of the humerus - to the Anular ligament of the Radius, the Olecranon and the ulna posterior to the Radial notch.
What is the components of the Ulnar Collateral Ligament?
This is a Thick triangular ligament that extends from the Medial epicondyle of the humerus to the Coracoid process and the Olecranon of the Ulna.
What ligament in the Elbow is the strong band that encircles the head of the Radius?
Anular ligament of the Radius.
it holds the head of the Radius in the Radial notch of the Ulna.
(Apart of the Pivot joint)
What ligament in the Elbow joint is a Thick triangular ligament on the medial portion of the arm?
The Ulnar Collateral Ligament.
What ligament in the Elbow joint is a Strong triangular ligament that extends from the lateral epicondyle to the Anular ligament?
Radial Collateral Ligament.
What are common injuries you can get to your elbow?
Tennis elbow(lateral epicondylitis), Medial epicondylitis, Dislocation of the radial head, Tommy John surgery.
What is Tennis Elbow and how does it occur?
This is referred to as pain at or near the Lateral Epicondyle of the Humerus, Caused by an improperly performed Back hand.
What is Golfers elbow and how does it occur?
This is an Inflammation of the Medial Epicondyle caused by improper swings in golf.
In this Disorder the Elbow joint may enlarge, Fragment or Separate.
What is a Dislocation of the Radial Head and how does it occur?
This is the most common Upper limb Dislocation in children.
This occurs when the the head of the Radius slides past or ruptures the Radial Anular ligament that forms the collar around the Head of the Radius at the Proximal Radioulnar joint.
What is Tom john Surgery and how does it occur?
This is damage to the Ulnar Collateral ligament.
The procedure to fix this is the Tom John Surgery.
What are the joints of the Elbow?
Humeroulnar joint, Humeroradial joint, Proximal Radioulnar joint.
What is the resting position of the Humeroulnar Joint?
70˚ flexion, 10˚ supination.
What is the closed packed position of the Humeroulnar joint?
Extension with supination.
What would the Capsular pattern of the Humeroulnar joint?
Flexion, extension.
What bones form the Humeroulnar joint?
trochlea (convex on humerus) and trochlear notch (concave on ulna).
What type of joint is the Humeroulnar joint?
Synovial, Hinge.
What movements does the humeroulnar joint perform?
Flexion & extension.
What are the supporting structures of the Humeroulnar joint?
There is a joint capsule, Ulnarcollateral ligament.
What are the details of the Ulnarcollateral ligament?
Anterior band – medial epicondyle to coranoid process
Posterior band – olecranon to medial epicondyle
Oblique band – distal portion of anterior band to distal end of posterior band
Lateral collateral (or radial collateral ligament)
Lateral epicondyle to annular ligament
What are the details of the Ulnarcollateral ligament?
Anterior band – medial epicondyle to coranoid process
Posterior band – olecranon to medial epicondyle
Oblique band – distal portion of anterior band to distal end of posterior band
Lateral collateral (or radial collateral ligament)
Lateral epicondyle to annular ligament
What is the resting position of the Humeralradial joint?
Full extension 7 Full supination.
What is the resting position of the Humeralradial joint?
Full extension 7 Full supination.
What is the closed packed position of the Humeralradial joint?
90° elbow flexion, 5° supination Capsular Pattern – Flexion, extension, supination, pronation.
What are the supporting structures of the Humeralradial joint?
Joint Capsule, Ulnarcollateral & Radialcollateral ligaments.
What are the details of the Radialcollateral ligament of the Humeralradial joint?
Lateral epicondyle to annular ligament.
What are the supporting structures of the Proximal Radioulnar Joint?
joint capsule, Radialcollateral ligament, Ulnarcollateral ligament.
Extra-capsular:
Oblique cord.
Ulnar tuberosity to superior medial radius.
What would the capsular pattern be for the Proximal Radioulnar Joint?
Supination, pronation equally limited.
What is the closed packed position for the Proximal Radioulnar Joint?
5° supination.
What is the closed packed position for the Proximal Radioulnar Joint?
5° supination.
What are the Bursae of the Elbow joints?
Subcutaneous olecranon – between skin and olecranon
● Subtendonitis olecranon – between triceps tendon and olecranon
● Radioulnar – between supinator, extensor digitorum, and humeroradial joint
● Bicipitoradial – between radial tuberosity and biceps tendon
