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Bones of the Upper Limb: Ulna01:15

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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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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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The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
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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 upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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Functional Classification of Joints
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Dislocation Intermediate Cuneiform with Fracture Medial Cuneiform.

Ajay Pal Singh1, Arun Pal Singh2, Vipul Garg3

  • 1Department of Orthopaedics, Punjab Civil Medical Services, Civil Hospital, Mukerian, Punjab, India.

Journal of Orthopaedic Case Reports
|May 17, 2017
PubMed
Summary

This study presents a rare case of intermediate cuneiform dislocation with a displaced medial cuneiform fracture. A novel distractor technique, previously used for navicular injuries, successfully treated this foot fracture without open reduction.

Keywords:
Cuneiformdislocationdistractorfracture

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Area of Science:

  • Orthopedic surgery
  • Podiatric medicine
  • Traumatology

Background:

  • Dislocation of the intermediate cuneiform bone is an exceptionally rare foot injury.
  • Concurrent undisplaced medial cuneiform fractures have been documented only once previously.
  • This case represents the first reported instance of intermediate cuneiform dislocation with a displaced medial cuneiform fracture.

Observation:

  • A 43-year-old male sustained an intermediate cuneiform dislocation with a displaced medial cuneiform fracture following a road traffic accident.
  • The injury involved complex fracture dislocation of the midfoot bones.

Findings:

  • The patient was treated using a distractor device, a technique previously described only for navicular fracture dislocations.
  • This method facilitated closed reduction, avoiding the need for open surgery.
  • The treatment resulted in minimal complications and a favorable clinical outcome.

Implications:

  • The application of a distractor technique for cuneiform fracture dislocation is novel, offering an alternative to traditional open reduction.
  • This minimally invasive approach may be a viable option for similar rare injuries.
  • The case contributes a new reduction method to the literature for managing complex cuneiform injuries.