Fixation of Posterior Malleolus in Trimalleolar Ankle Fractures: Anteroposterior Screw or Posterolateral Plate?

Utility of Weight-Bearing Computed Tomography in the Postoperative Assessment of Ankle Fractures

Background: Ankle fractures are among the most common injuries requiring surgical intervention. Standard radiographs are typically used for postoperative assessment; however, some patients continue to experience residual symptoms despite satisfactory radiographic outcomes. Weight-bearing computed tomography (WBCT), though not yet widely integrated into clinical practice, offers potential advantages in evaluating lower-limb deformities, injuries, and arthritis. This study explores the utility of WBCT for the midterm assessment following ankle fracture fixation and compares its findings with those obtained from standard radiographs. Methods: In this retrospective case study, we analyzed the correlations between the functional outcome scores approximately one year post-surgery and parameters assessed using WBCT. Pearson's correlation coefficient was used to evaluate these correlations, and a t-test was performed to assess their statistical significance, with a threshold p-value of 0.05. Additionally, Spearman's rank correlation coefficient was calculated as a supplementary descriptive measure, without significance testing. These correlations were then compared with those obtained from standard ankle radiographic views (anteroposterior, lateral, and mortise). Results: Several correlations were identified between WBCT parameters and functional scales, with certain parameters demonstrating high statistical significance (p < 0.05). Overall, the correlations observed for WBCT were stronger than those for standard radiographs. Conclusions: Although the study cohort was limited, the findings suggest that WBCT may provide additional insights beyond conventional radiography. Further research with larger patient groups is needed to establish its clinical relevance.

Posterolateral Versus Posteromedial Approach for Posterior Malleolus Fixation in Trimalleolar Fractures of the Ankle

Background Ankle fractures, particularly those involving the posterior malleolus, are prevalent injuries that can lead to significant functional impairment if not managed appropriately. The choice of surgical approach for posterior malleolus fixation - posteromedial (PM) or posterolateral (PL) - remains a debate among orthopedic surgeons. The PM approach is a traditional technique involving extensive soft tissue dissection, while the PL approach offers improved visualization and precision with potentially less soft tissue disruption. Materials and methods  This prospective comparative study was conducted at the Department of Orthopedics, Dr. D. Y. Patil Hospital and Research Centre, Pune, between February 2022 and August 2024.A total of 42 patients with trimalleolar fractures involving the posterior malleolus were randomly assigned to either the PL or PM surgical groups, with 21 patients in each group. Surgical outcomes were assessed using the American Orthopedic Foot and Ankle Society (AOFAS) scores, articular surface step-off, range of motion (ROM), and complications such as osteoarthritis, infection, neurovascular injury, nonunion, and deep vein thrombosis at six months, 12 months, and final follow-up. Results Patients in the PL group demonstrated superior clinical outcomes with higher mean AOFAS scores at six-month (87.52 ± 2.92) and 12-month (90.28 ± 1.72) follow-ups compared to the PM group (84.95 ± 3.25 at six months; 88.86 ± 2.41 at 12 months), with statistically significant differences favoring the PL approach. However, as per the final follow-up, the difference in AOFAS scores between the two groups was not statistically significant. The PL group also had more patients with excellent ROM and fewer complications, such as arthritis, than the PM group. Conclusion  The PL approach for posterior malleolus fixation in trimalleolar fractures offers superior early functional outcomes and fewer complications than the PM approach. However, the long-term outcomes between the two approaches show no significant difference, indicating that both techniques can be effective depending on the specific fracture pattern and patient characteristics.