- See:
Baumann's Angle
- Discussion:
- cubitus varus is the most common complication following supracondylar frx,
- orginally, etilogy of cubitus varus was thought to occur because of growth disturbance of distal humeral epiphysis;
- this may be true but is uncommon;
-
current thinking is that it stems from malreduction of frx, with medial displacement, internal rotation, and extension of the distal fragment;
- this then permits distal fragment to tilt into varus;
- cubitus varus produces a cosmetic deformity but
little function deficit;
- during reduction, a small amount of medial or lateral displacement or small amount of anterior or posterior angulation may be tolerated, but any
malrotation is not acceptable;
- rotation is verified under flouro w/ AP view, lateral view, & oblique views;
- if reduction is not be obtained, there may be soft-tissue interposition which mandates open reduction;
- Ulnar Nerve Palsy:
-
Tardy ulnar nerve palsy in cubitus varus deformity associated with ulnar nerve dislocation in adults. J Shoulder Elbow Surg 2006;15:474-478.
-
Analysis of tardy ulnar nerve palsy associated with cubitus varus deformity after a supracondylar fracture of the humerus: A report of four cases. J Orthop Trauma 1995;9:435-440.
Post-traumatic cubitus varus. Long-term follow-up of corrective supracondylar humeral osteotomy in children.
Prevention of cubitus varus deformity in supracondylar fractures of the humerus.
Post-traumatic cubitus varus. Long-term follow-up of corrective supracondylar humeral osteotomy in children.
Supracondylar fractures of the humerus. Assessment of cubitus varus by the Baumann angle.
