Type IIIA synostosis involves the bicipital tuberosity
, type IIIB synostosis lies at the radial head and the proximal radioulnar joint, and type IIIC is associated with complete ankylosis of the elbow with widespread heterotopic bone.
(8) Imaging field-of-view should be about 12 cm and extend from the distal humerus to the bicipital tuberosity
of the radius, and a dedicated elbow coil should be used for optimal spatial resolution.
The anatomy of the bicipital tuberosity
and distal biceps tendon.
Examination reveals tenderness along the biceps tendon with point tenderness over the bicipital tuberosity
of the radius with the forearm fully supinated.
Such treatment is also indicated for synostosis located at the level of the bicipital tuberosity
. Type 3 synostoses are further divided into three different subgroups: type 3A, which affects the proximal third of the forearm without involving the articular surface and is treated as type 2; type 3B, where only the radioulnar joint involved is treated with the excision of the radial head; type 3C, where the radiohumeral joint is involved and, consequently, the treatment is an arthroplasty [4, 5].