Objective: To investigate the advantages and effectiveness of anterior neurovascular interval approach for fixation of ulna coronoid process fracture.
Methods: Between February 2011 and April 2015, 8 patients with ulna coronoid process fracture were treated with open reduction and internal fixation by anterior neurovascular interval approach. There were 5 males and 3 females, aged from 14 to 62 years (mean, 34 years). Fractures were caused by falling in 5 cases, traffic accident in 2 cases, and crashing in 1 case. The time between injury and operation was 1-6 days (mean, 3.5 days). According to Adams classification, there were 4 cases of type II, 1 case of type III, 2 cases of type IV, and 1 case of type V. In 1 patient with joint instability, lateral collateral ligament repair was given through another incision after fixation of coroniod fracture and the hinged external fixator, and plast splin was used to fix in the other patients; function exercise was done after removal of external fixtion.
Results: All incisions healed by first intention, and no complications of neurovascular injury and deep infection occurred. All patients were followed up 6-48 months (mean, 22 months). The healing time of fracture was 8-15 weeks (mean, 12.6 weeks). Mild myositis ossificans occurred in 1 case. The flexionextension arc of the elbow was (125.00±7.07)° and the forearm rotation was (135.00±7.07)°, showing no significant difference when compared with those of normal side[(126.88±7.53)° and (139.38±8.21)°] (=0.469, =0.654; =2.198, =0.054). According to Morrey's scale, the results were excellent in 6 cases, good in 2 cases; the excellent and good rate was 100%.
Conclusions: Anterior neurovascular interval approach for reduction and internal fixation of ulna coroniod fractures has the advantages of simple operation, less trauma, and larger operative field. It can be used alone or combined with other surgical approaches.
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