Failure to achieve pelvic balance following hip replacement surgery may be a risk factor for development of degenerative scoliosis

摘要

IntroductionIn the global alignment of body, the pelvis and spine are strictly and mutually connected. Our hypothesis was that failure to achieve pelvic balance following hip replacement surgery (THA) may be a risk factor for development of degenerative scoliosis.MethodsA retrospective case control study was conducted. Patients who underwent THA followed by spine surgery primarily because of scoliosis (scoliosis group) were compared to patients who only underwent THA (no scoliosis group). Any patient in either group who had spine surgery prior to THA was excluded. Propensity score matching was utilized to match the two groups on age, gender and etiology for THA.ResultsA total of78 patients (39 in each group) were included in the study. The mean age was 63?years in scoliosis group and 64?years in no scoliosis group. The most common etiologies for THA were osteoarthritis, fracture and avascular necrosis. The mean pelvic obliquity as measured by the O’Brien method was 2.9° (0.2–6.5) in scoliosis group and 1.1° (0–4.5) in no scoliosis group. This difference in pelvic obliquity between the two groups was statistically significant (p?