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Related Concept Videos

Bones of the Upper Limb: Radius01:09

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The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
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The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
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Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
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The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles.
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Overview of Flail Chest
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Radiocarpal fracture-dislocations.

Asif M Ilyas1, Chaitanya S Mudgal

  • 1Temple Hand Center, Phildelphia, PA, USA.

The Journal of the American Academy of Orthopaedic Surgeons
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Summary
This summary is machine-generated.

Radiocarpal fracture-dislocations result from high-energy trauma, causing significant bone and ligament damage. Accurate diagnosis and surgical fixation are essential for restoring wrist anatomy and function.

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Area of Science:

  • Orthopedic Surgery
  • Trauma Surgery
  • Anatomy

Background:

  • Radiocarpal fracture-dislocations are uncommon injuries resulting from high-energy trauma.
  • These injuries involve substantial osseous and soft-tissue damage to the wrist.
  • Understanding radiocarpal joint anatomy is crucial for managing these complex dislocations.

Purpose of the Study:

  • To outline the mechanisms, diagnosis, and management of radiocarpal fracture-dislocations.
  • To emphasize the importance of anatomical reduction and fixation.
  • To differentiate these injuries from similar conditions like Barton fractures.

Main Methods:

  • Diagnosis relies on physical examination and radiographic evaluation.
  • Assessment includes identifying associated injuries like open fractures and neurovascular compromise.
  • Surgical intervention typically involves open reduction and internal fixation.

Main Results:

  • High-energy trauma is the primary cause, often involving shear or rotational forces.
  • Disruption of radiocarpal ligaments and styloid processes is characteristic.
  • Closed reduction may be achievable, but open reduction and internal fixation are usually required.

Conclusions:

  • Accurate anatomical restoration is paramount for successful outcomes in radiocarpal fracture-dislocations.
  • Meticulous surgical technique is necessary due to the complexity of these injuries.
  • Comprehensive evaluation for associated injuries is critical for optimal patient care.