Bilateral Proximal Radioulnar Synostosis

Synostosis or osseous union of any 2 adjacent bones can involve any part of the body. Synostosis between radius and ulna can take two forms, congenital and post Synostosis is a very rare congenital anomaly and most cases a post-traumatic, bilateral in 60% and more common in males. It is often part of syndromes such as Crouzon, Apert's and Poland's,4p Bixler syndrome, Genito multiple osteochondromas (hereditary multiple exostoses), limb syndrome. Although the exact etiology is not clear, it has been documented that the basis for the failure of differentiation between the radius and ulna. specimen of bilateral proximal radioulnar synostosis in Department of Anatomy, Sri Devaraj Urs Medical College, Kolar, Karnataka.The specimen limbs of a male cadaver aged 70yrs which were buried under the soil to obtain bones for study purpose. relevant segmen clinical diagnosis. rather than on absolute forearm position.