Prospective evaluation of early versus delayed weight-bearing on functional outcome after ankle fracture fixation
Background: Ankle fractures are among the most common lower limb injuries treated by orthopaedic surgeons. Postoperative rehabilitation protocols, particularly timing of weight-bearing, remain controversial. Early weight-bearing may enhance functional recovery but raises concerns regarding implant stability and fracture union. Ankle fractures are common injuries that frequently require open reduction and internal fixation (ORIF) to restore ankle stability and articular congruity. Postoperative rehabilitation protocols vary widely, particularly regarding the timing of weight-bearing. Early weight-bearing may enhance functional recovery and reduce stiffness, but concerns remain about implant failure, loss of reduction, and delayed union. Aim: To prospectively evaluate and compare the functional outcomes of early versus delayed weight-bearing following surgical fixation of ankle fractures.Materials and Methods: This prospective comparative study included 58 skeletally mature patients with closed ankle fractures treated with ORIF. Patients were divided into two equal groups: early weight-bearing (n = 29) and delayed weight-bearing (n = 29) based on postoperative rehabilitation protocol. Standardized fixation techniques were used according to fracture pattern, and syndesmotic stabilization was performed when required. Outcomes were assessed using a functional ankle scoring system, Visual Analog Scale (VAS) for pain, goniometric measurement of ankle dorsiflexion and plantarflexion, and serial radiographs to evaluate union and alignment. Complications such as infection, ankle stiffness, delayed union, nonunion, malalignment, implant failure, and post-traumatic arthritis were documented. Data were analyzed using appropriate statistical tests, with p < 0.05 considered significant. Results: Both groups were comparable in baseline characteristics including age (41.32 ± 10.24 vs 42.18 ± 9.86 years; p = 0.734), gender distribution (p = 0.789), side of injury (p = 0.794), fracture type distribution (p = 0.812), and syndesmotic injury (p = 0.771). Functional outcomes were significantly better in the early weight-bearing group, with higher mean functional ankle score (88.24 ± 6.18 vs 80.67 ± 7.42; p = 0.001) and lower VAS pain score (1.84 ± 0.92 vs 2.96 ± 1.12; p = 0.002). Range of motion was also superior with early weight-bearing, showing greater dorsiflexion (16.42 ± 3.12° vs 13.68 ± 3.46°; p = 0.004) and plantarflexion (33.86 ± 4.91° vs 29.47 ± 5.28°; p = 0.003). Radiological union rates were comparable (96.55% vs 93.10%; p = 0.553) with no significant differences in malalignment or implant failure. Overall complications were significantly lower in the early weight-bearing group (20.69% vs 48.28%; p = 0.028), and ankle stiffness was significantly less frequent (10.34% vs 24.14%; p = 0.041). Conclusion: Early weight-bearing after ankle ORIF leads to significantly improved functional recovery, reduced pain, better ankle range of motion, and fewer overall complications without compromising fracture union or implant stability in appropriately selected patients