What is Coronoid process fracture?
What is Coronoid process fracture?
Coronoid fractures are a break in the coronoid process of the ulna due to trauma or injury. A coronoid fracture of the ulna is a complex intraarticular fracture that is difficult to expose due to complex surrounding anatomical structures.
What is the classification system for Coronoid fractures?
Classification/Description Type I fractures are an avulsion of the tip of the coronoid. Type II fractures are a single or comminuted fragment involving less than 50% of the coronoid. Type III fractures involve greater than 50% of the coronoid.
Where is the Coronoid process in the elbow?
The coronoid process is a triangular eminence projecting forward from the upper and front part of the ulna. Its base is continuous with the body of the bone, and of considerable strength.
How many bones does the humerus articulate with?
The humerus (/ˈhjuːmərəs/; pl. humeri) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections….Distal humerus.
| Lower extremity of humerus | |
|---|---|
| FMA | 13303 |
| Anatomical terms of bone |
What muscles attach to the coronoid process?
The coracoid also serves as a critical anchor for many tendinous and ligamentous attachments. These include the tendons of the pectoralis minor, coracobrachialis, and short head of the biceps brachii muscles, and the coracoclavicular, coracohumeral, coracoacromial, and transverse scapular ligaments.
What does Coronoid mean in anatomy?
Medical Definition of coronoid process 1 : the anterior process of the superior border of the ramus of the mandible. 2 : a flared process of the lower anterior part of the upper articular surface of the ulna fitting into the coronoid fossa when the arm is flexed.
What is the function of coronoid process?
Function. The coronoid process stabilises the elbow joint and prevents hyperflexion.
What is coronoid fracture of the elbow?
Coronoid Fractures are traumatic elbow fractures that are generally pathognomonic for an episode of elbow instability. Diagnosis can be made using plain radiographs of the elbow. CT studies may be helpful for surgical planning.
Is elbow instability at the tip of the coronoid an avulsion injury?
not an avulsion injury as nothing inserts on tip. Pathoanatomy fractures at the coronoid base can amplify elbow instability given that anterior bundle of the medial ulnar collateral ligament attaches to the sublime tubercle 18 mm distal to tip. anterior capsule attaches 6 mm distal to the tip of the coronoid.
Are coronoid fractures pathognomonic?
Introduction Coronoid fractures are pathognomonic of an episode of elbow instability may be isolated coronoid fracture less common than previously thought. coronoid fracture + associated injuries commonly occur with elbow dislocation associated with recurrent instability after dislocation
What is the treatment for elbow fractures?
Treatment may be nonoperative for nondisplaced coronoid tip fractures with a stable elbow. Surgical management is indicated for anteromedial facet fractures or fractures associated with elbow instability.
