Type III open complete articular fractures of the distal humerus: case series outcomes after orthoplastic reconstruction.

Background: Open complete articular injuries of this distal humerus are rare injuries which are challenging to manage. The study unit aims to present a small case series of Gustilo-Anderson type III open complete articular fractures which have undergone a single-stage definitive fixation and soft-tissue coverage, presenting their functional outcomes.

Methods: Retrospective case series identifying all type IIIB AO 13-C3 distal humeral fractures from the unit trauma database. The primary outcome was the Oxford Elbow Score. Secondary outcomes included deep infection, nonunion, and reoperation.

Results: A total of six patients were identified, (four open type IIIA, 2 type IIIB). All patients underwent single-sitting definitive fixation and soft-tissue coverage. Mean range of motion arc was 90 degrees. The median Oxford Elbow Score was 35 (range 21-43), representative of mild to moderate arthritis. One patient (n = 1) developed deep infection at 24 months and required reoperation. All patients (n = 6) proceeded to union at the latest follow-up. We present a case report of a 59-years-old patient who sustained a type IIIB, AO 13-C3 distal humeral fracture who underwent single-sitting definitive fixation and flap coverage.

Conclusion: This case series reports that positive functional outcomes representative of mild/moderate arthritis at short to midterm follow-up can be achieved after definitive fixation and soft-tissue coverage in a single sitting, including when the soft tissue is deficient. This is a rare injury which is under-reported in the literature.