Congenital radioulnar synostosis

MONDO:0017985

Congenital radioulnar synostosis is a rare bone disorder that may be isolated or associated with other disorders and that is characterized by failure of segmentation of the radius and ulna during embryological development, causing limited rotational movements of the forearm, which may lead to difficulties with some activities of daily living.

Also known as: radioulnar fusion, radioulnar synostosis, radioulnar synostosis (disease), proximal, smooth fusion of 2-6 CM between the radius and ulna and absent head of the radius, radial-ulnar synostosis, radio-ulnar synostosis, radio-ulnar synostosis type 1

1 clinical trial for this condition and its sub-types, 1 tagged with Congenital radioulnar synostosis itself.

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Where it sits in the disease tree

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Sub-types of Congenital radioulnar synostosis

Radio-ulnar synostosis, bilateral 0 trials
Radio-ulnar synostosis, unilateral 0 trials
Radioulnar synostosis-developmental delay-hypotonia syndrome 0 trials

Including sub-types (1) Tagged with Congenital radioulnar synostosis (1)

Not yet recruiting 1

New surgery aims to restore arm rotation in kids with rare bone condition

Disease control Not yet recruiting

This study tests a surgical procedure to correct a rare condition where the two bones in the forearm are fused together, limiting rotation. The surgery involves cutting and repositioning the bones, then using Kirschner wires to hold them in place. The study will enroll one child …

Sponsor: Sohag University • Aim: Disease control

Last updated Jun 26, 2026 14:48 UTC

Congenital radioulnar synostosis

Where it sits in the disease tree

New surgery aims to restore arm rotation in kids with rare bone condition