A prospective study of functional outcome of posterior tibial spine chip fractures treated with screw fixation

Abstract

Aim: To study the functional outcome of posterior tibial spine fractures treated with threaded Cannulated cancellous Screw fixation. Materials and Methods: This is a prospective study of Posterior Tibial Spine Avulsion fractures in the age group 15-60 years admitted in Government Medical College, Kota, during the period from August 2020 to December 2022. The cases were classified under Modified Meyers and Mckeever classification. Patients with associated vascular Injury and skeletally immature and age group more than 60 years were excluded. Through Burks and Schaffer approach, avulsion fractures of Posterior Tibial Spine were fixed with 4mm partially threaded Cannulated cancellous Screw. Discussion: In our study, the mean age group of the patient was 33 years with a male preponderance. Road traffic accidents and accidental fall were the commonest mode of injury and the mean operating time was 43.5 minutes. Post operatively the knee flexion was around 120 degrees in average. And 15 patients had excellent outcome with Lysholm knee scoring scale and 5 had good outcome with no patients with fair or poor outcome. Results: Open reduction and internal fixation of Posterior Tibial Spine avulsion fractures through Burks and Schaffer approach had yielded excellent results in our study. A displaced avulsion fracture of Posterior Cruciate Ligament with more than 10 mm posterior tibial translation should be reduced and fixed in order to stabilise the joint and to prevent non-union.