After repairing the anatomical structure of medial collateral ligaments,we liberated organic semitendinous tendon or bone-patella tendon-bone,and reconstructed superficial medial collateral ligament.

To study 15 patients with anular ligaments formed operation on children s old Monteggia fracture;

Reconstruction of annular ligament with dilurn polyester felt cardiac patch in the treatment of dislocation of capitulum radius;

Methods Fifteen patients with old Monteggia fracture in children were treated with open reduction,osteotomy of the ulna and restoration or angioplasty of annular ligament.

In our previous subacute cases, we found that the annular ligament was intact and tensely stuck in the radiohumeral joint space.