Improper healing or lack of healing of a fracture.

A bad join of the pieces of a broken bone.

A union of the fragments of a fractured bone in a crooked or faulty position. Tibial malunion can cause alignment problems in the ankles and knees. The condition may be treated by surgically refracturing and properly resetting the bone. Surgery may involve properly positioning the bone parts or bone grafting.

Deformity of a bone resulting from union of a fracture in which the bone ends are poorly aligned. Arthritis of adjoining joints may develop as a complication later. Osteotomy may be needed to correct the deformity and prevent the complication.

The joining of the fragments of a fractured bone in a faulty position, forming an imperfect alignment, shortening, deformity, or rotation.