Multiple Intramedullary Nailing Versus Low Profile Mini-Plating in Unstable Metacarpal Neck Fractures

Background: Neck fractures of the metacarpal bone can alter optimal hand function. Many surgical fixation techniques are described for this fracture with no robust evidence for the best treatment. Recently developed low profile plates may, however, challenge the preference for K-wires. Low profile plates were found to have lower complications than conventional plates in addition to early range of motion and early return to work. The aim of the present study was to determine the best outcome in patients with unstable fracture neck metacarpals using either multiple K wires or low profile mini-plating.

Methods: This prospective randomized controlled study included 37 patients suffering from metacarpal neck fractures. patients were designated as group 1 (AIN group; 18 patients), and the other consecutive patients were designated as group 2 (LPP group; 19 patients). Both groups were treated within the first 48 hours of their injury and followed up for a minimum period of 40 weeks; the maximum period of follow up was 48 weeks.

Results: No significant differences were found for PVAS, Q-DASH, TAM, time to radiological union or residual deformities at last follow-up. Grip strength, however, was significantly better in the K-wire group. Operative time and time off work were significantly shorter in the k-wire group. Plate group showed prevalent complications both peri and post-operative hitting 63.2 % of the plate group vs 16.7% in K-wire group.

Conclusions: Low profile plates with immediate mobilization paradoxically prolonged operative time, technical demand and disturbing the fracture’s biological environment along with the extra cost were thus not justified by results. Antegrade intramedullary K-wire nailing was superior for the management of unstable metacarpal neck fractures.