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Single mini-incision has some perioperative advantages over standard-incision total hip replacement.

Study selection and assessment: Randomized controlled trials (RCTs) or quasi-RCTs and studies of less rigorous design (e.g., nonrandomized comparative studies, single cohort studies, case series, and national registries) in English, Chinese, or Japanese were included. Participants were adults who were eligible for standard THR for the treatment of arthritis. Interventions were primary THR with use of a single-incision minimally invasive technique (as compared with the standard technique) or primary THR with use of a 2-incision minimally invasive technique (as compared with the standard technique or the single-incision minimally invasive technique). The methodological quality of the RCTs and other included studies was assessed with use of the Delphi criteria.