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Bones of the Upper Limb: Ulna

Bones of the Upper Limb: Ulna

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 of the...

Bones of the Upper Limb: Radius

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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.
The radius has a nail-shaped head, and a short...

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[Madelung deformity: isolated ulnar wedge osteotomy].

C Aharoni¹, Y Glard, F Launay

¹Service de chirurgie plastique et reconstructrice, hôpital de la Conception, 147, boulevard Baille, 13005 Marseille 05, France. claude.aharoni@ap-hm.fr

Chirurgie De La Main

|March 14, 2007

Summary

A new surgical technique involving ulnar shortening and anterior flexion osteotomy improved wrist function and forearm rotation in patients with Madelung deformity. This safe procedure corrected radio-ulnar dislocation, offering promising results for this condition.

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Area of Science:

Orthopedic Surgery
Hand and Wrist Surgery
Pediatric Orthopedics

Context:

Madelung deformity involves distal radial growth plate closure, leading to wrist deformity and functional deficits.
Current treatments often aim for global correction, which can be complex.

Purpose:

To evaluate a novel surgical approach for Madelung deformity focusing on ulnar shortening and anterior flexion osteotomy.
To assess the procedure's efficacy in correcting radio-ulnar dislocation and improving forearm rotation.

Summary:

A retrospective study of four wrists in three patients with Madelung deformity was conducted.
The surgical technique involved ulnar shaft shortening and anterior flexion osteotomy to address distal radio-ulnar joint instability.
Clinical and radiological assessments were performed pre- and post-operatively with a 24-month follow-up.

Impact:

The procedure demonstrated significant improvements in wrist function, pain-free range of motion, and forearm rotation.
Post-operative imaging confirmed correction of the dorsal dislocation of the ulnar head.
This technique appears safe and effective for managing Madelung deformity, warranting prospective evaluation.