Chapter 4: Elbow Flashcards
When arm cannot be extended for AP Elbow, and the forearm is in contact what is being demonstrated?
joint space between radial head and capitulum is open
- foreshortened distal humerus
- proximal radius / ulna without distortion
- partially open elbow joint
- radial head, neck, and tuberosity slightly superimposed over the proximal ulna
- humerus is superimposed
When arm cannot be extended, and the humerus is in contact with the IR, What does it demonstrate?
demonstrates humerus without distortion (distal humerus) keep hand supinated, don’t rotate hand because epicondyles won’t be parallel to IR. Closed elbow joint space
- foreshortened proximal forearm
- close capitulum- radial head
- proximal radius superimposed over the ulna
What occurs when a patient can only extend arm 30 degrees or arm is flexed?
- closed capitulum - radial joint
- olecranon process moves away from the fossa
- coronoid process shifts proximally