Anterolateral and Medial Locking Compression Plates for the Management of Distal Tibial Fractures: A Comparative Prospective Study.

Abstract

Open/close reduction (OR/CR) and internal fixation (IF) of displaced fractures of distal tibia with either a medial or anterolateral plate is a commonly performed procedure. Anterolateral plating avoids an incision along the medial subcutaneous border of tibia and has been shown to have reduced risk of wound complications. The aim of our study was to determine the functional outcome of these fractures treated with anterolateral and medial distal tibial locking compression plates. This was a prospective study that included 60 patients with distal tibial fractures (close or grade I open injury)divided into two groups with 30 patients in each where one group was treated with OR/CR and IF using an anterolateral distal tibial locking plate (Group A) and the other using a medial distal tibial locking plate (Group B). The duration of surgery and intraoperative blood loss and time to union were recorded for all the patients. Functional evaluation was done at one year in terms of pain, function and alignment using theAmerican Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale, and complications, if any, were noted. Both the groups were comparable in terms of age, gender, time of presentation, AO classification and presence of wound. The mean duration of surgery as well as the intraoperative blood loss were more in the anterolateral plate group than in the medial plate group, but the difference was statistically insignificant. Ten patients (33%) with medial plates had symptomatic hardware and 7 (23.3%) underwent removal while only 3 (10%) patients in the anterolateral plate group had similar complaints and none had to undergo removal. Two patients with anterolateral plate and one with medial plate had malunion. The mean time to fracture union as well as the rate of infection was less and the functional outcome at one year was better in the group treated with anterolateral plates as compared to the one with medial plates, but the difference again was not statistically significant for all the parameters. With reduced risk of soft tissue complications and by obviating the need for implant removal, anterolateral plates can prove to be a better alternative to the medial plates especially in elderly patients in the management of these fractures.