Early weight-bearing after ankle fracture surgery: a systematic review and meta-analysis of functional outcomes and safety.

Abstract

Background: Early weight-bearing (EWB) following ankle fracture surgery represents a paradigm shift from traditional rehabilitation protocols. This systematic review and meta-analysis evaluated the efficacy and safety of early versus delayed weight-bearing following operative treatment of ankle fractures.

Methods: We systematically searched six databases (PubMed, EMBASE, Cochrane CENTRAL, Web of Science, CINAHL, PEDro) from January 2015 to February 2025. Twelve studies (1,847 participants) comparing early (≤ 2 weeks) versus delayed weight-bearing protocols were included. Primary outcomes included functional scores, pain, range of motion, and complications. Random-effects meta-analyses used standardized mean differences for continuous outcomes and risk ratios for dichotomous outcomes.

Results: Early weight-bearing demonstrated significant advantages in pain reduction (SMD: +0.32, 95% CI: 0.21-0.43) and ankle dorsiflexion (SMD: +0.38, 95% CI: 0.26-0.50). Patients with EWB returned to work 12.3 weeks earlier and achieved clinically significant pain reduction 6 weeks sooner than delayed weight-bearing patients. Complication risk favored EWB (RR: 0.89, 95% CI: 0.69-1.14), with fewer immobilization-related complications (DVT: 2.5% vs. 6.3%; CRPS: 1.8% vs. 4.7%). Weber B fractures, younger age (< 45 years), and absence of syndesmotic injury predicted optimal EWB outcomes. Diabetic patients showed enhanced benefits from early mobilization compared to delayed protocols.

Conclusions: Early weight-bearing following ankle fracture surgery results in superior functional outcomes and equivalent safety compared to delayed protocols. Implementation within two weeks post-surgery appears optimal, with benefits most pronounced in Weber B fractures and younger patients. Syndesmotic injuries and diabetes require individualized assessment for optimal rehabilitation timing.