Balancing Stability and Recovery: A Scoping Review on Conservative vs. Surgical Management of Acute Posterior Cruciate Ligament Injuries

Background: Posterior cruciate ligament (PCL) injuries are relatively rare, with limited consensus on the optimal treatment for isolated acute cases. Conservative management and surgical reconstruction each offer potential benefits, but their comparative efficacy remains unclear. Methods: A scoping review was conducted following the Joanna Briggs Institute (JBI) framework and PRISMA-ScR guidelines. A systematic search of MEDLINE, Cochrane CENTRAL, Scopus, PEDro, and Web of Science was completed on 23 December 2024. Studies comparing conservative treatment and surgical reconstruction for isolated acute PCL injuries were included. Outcomes such as functional recovery, stability, and long-term complications were extracted and synthesized qualitatively. Results: Six studies were included, comprising case series, prospective, retrospective, and review designs. Conservative treatment demonstrated significant improvements in functional recovery (IKDC scores: 67–90.3/100) but showed limited improvement in stability (STSD reduction: 0–3 mm). Surgical reconstruction yielded superior stability (STSD reduction: 8.2 to 2.7 mm) and lower rates of degenerative changes but was associated with a higher risk of complications. Functional outcomes were comparable between approaches in some studies, although surgical patients showed slightly better long-term stability. Conclusions: Both conservative and surgical treatments achieve satisfactory outcomes for isolated acute PCL injuries. Treatment selection should be tailored to patient-specific factors, considering functional demands and injury severity.