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Chapter 1: Functional Anatomy and Biomechanics - Elbow Region

Home Get App Take Quiz Create Humeroulnar Joint Distal end of humerus articulates with proximal end of ulna Trochlea and trochlear notch face ant at 45 degree angle - allows space between ulna and humerus during flexion Humeroradial Joint Distal end of humerus (capitulum) articulates with concave oval facet of proximal radius Radioulnar Joint Proximal: radial head is ovoid and cone shaped Medial radius artiuculates with lateral notch of ulna Distal: convex ulna articulates with concave radius (opposite to proximal articulation) Elbow Joint Capsule Encloses entire joint complex Thin aneriorly and posteriorly Continues medially with UCL and laterally with RCL Elbow Ligaments: UCL Triangular shaped, consists of 3 parts Reinforces humeroulnar joint medially Elbow Ligaments: RCL Fan shaped Runs from lateral epicondyle to annular ligament Reinforces humeroulnar joint laterally Elbow Ligaments: Annular  Osteofibrous ring attched to medial ulna and encircles radial head Inner surface lined with fibrocartilage Protects radial head, especially in semiflexion (very unstable) Taught in extremes of pronation and supination Elbow Ligaments: Quadrate Extends from radial notch (ulna) to the neck of the radius Reinforces inferior joint capsule Maintains radial head in opposition to ulna Limits amount of spin in supinatio and pronation Elbow Ligaments: Distal Radioulnar Anterior and posterior portions Primarily strengthens capsule Olecranon Bursa Located on post aspect of elbow over olecranon process  Elbow Joint Blood Supply Brachial artery Ant ulnar recurrent artery Post ulnar recurrent artery Radial recurrent artery Middle collateral branch of deep brachial artery

Author dmshaw9 ID 297897 Card Set Chapter 1: Functional Anatomy and Biomechanics - Elbow Region Description NPTE: Chapter 1 Updated 2015-03-08T23:11:48Z Show Answers