Total elbow arthroplasty for acute distal humeral fractures with humeral condyle resection or retention: a long-term follow-up study.

BACKGROUND: Open reduction and internal fixation is the gold standard for the operative treatment of intra-articular distal humeral fractures. However, in elderly patients the approach involves a high rate of complications. We reviewed the long-term outcomes of 13 primary total elbow arthroplasties (TEAs) performed to treat acute fractures in non-rheumatoid patients who at the time of trauma were aged less than 70 years. The aim of the study was to establish whether condyle retention enhances hinge stability and influences outcomes in these patients, who are younger than those who typically undergo TEA.

METHODS: In 13 consecutive patients with acute distal humeral fractures aged 61-67 years, a linked semi-constrained Coonrad-Morrey prosthesis was implanted. The medial and lateral condylar bone fragments were resected (7 patients) or stabilized to the diaphysis using k-wires or plates (6 patients).

RESULTS: At a mean follow-up of 12 years, the mean Mayo Elbow Performance Score was 88 and patient satisfaction was 85%. Nine patients (70%) did not require surgical revision. All revisions involved the group managed by condyle resection.

DISCUSSION: TEA can be considered in elderly subjects with acute distal humeral fracture. In our patients, resection of the medial and lateral condyle fragments did not influence outcomes, although clinical observation suggested that it involves greater mechanical stress on the hinge, heightening the long-term risk of bushing wear. Condyle fixation with plates or k-wires seems to afford longer implant survival and is recommended in younger patients with higher functional demands.