Pathomorphism analysis of cubitus varus following superacondylar fractures of the humerus

Objective:To explore the pathomorphism features of cubitus varus deformity following humerus supracondylar fracture.Method:To study the radiographies and observe the pathological changes in operation of 50 patients with cubitus varus deformity.Result:It were found that the external condyle of humerus enlarged,the internal condyle diminished,the trochlea atrophy,the olecranon fossa shoal and deformation,the fracture distal ulnar divergence or/and ulnar impaction or/and the internal rotation,the imbalance of joint development in many patients,and the olecranon dislocation towards sulcus nervi ulnaris in some patients,Conclusion:The cause of cubitus varus deformity is largely related to the fracture distal ulnar divergence or/and ulnar impaction or/and the internal rotation,but not the injury of the growth plate.The serious and long-stangding cubitus varus deformity can lead to the instability and imbalance of elbow joint that cause ache of outer elbow joint.And it is appropriate to be operated early once the deformity is occurred.