Arthroscopically assisted treatment for nonconcentric reduction of hip posterior dislocation caused by acetabular labrum rim fracture: Medium-term clinical and radiological outcomes

Abstract Background Nonconcentric reduction of hip posterior dislocation caused by the acetabular labrum rim fracture is rare. There has been very little study on the feasibility of arthroscopically treatment and medium and mid-term evaluation to this pathology. The objectives of the current study were: (1) Is the arthroscopically assisted technique feasible to this manage this injury? (2) What is the effectiveness of arthroscopic treatment for nonconcentric reduction of hip posterior dislocation caused by acetabular labrum rim fracture. Hypothesis Arthroscopically assisted procedure is an alternative treatment modality for nonconcentric reduction of hip posterior dislocation caused by acetabular labrum rim fracture. Patients and methods Thirteen of 257 posterior hip dislocations who were admitted to our hospital from February 2008 to March 2017 were included: 9 males and 4 females, with an average age of 23.7 (15–36) years. All of them underwent hip posterior dislocation and nonconcentric reduction related to acetabular labrum rim fracture. All of them had arthroscopic reduction and fixation of the rim fracture. Visual Analogic Score (VAS) score, modified Harris score, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score and the last follow-up radiographs were analyzed respectively. Postoperative complication and the need for secondary operation were recorded during the process. Results The incidence rate of this pathology was nearly 5%. Twelve out of 13 patients were followed up for an average of 42 (range, 26–68) months. At the final follow-up, VAS score was decreased from 5.2 ± 0.9 (range, 4.0–6.1) preoperatively to 0.5 ± 0.5 (range, 0.0–1.0) (p  Conclusion Arthroscopically assisted procedure is an alternative treatment modality for nonconcentric reduction of hip posterior dislocation caused by the acetabular labrum rim fracture without surgical dislocation procedure. Good clinical results can be achieved without any complications related to the surgical procedure. Level of evidence Level IV, therapeutic case series.