Pelvic Incidence in Patients with Hip Osteoarthritis

Raphael, Ibrahim and Rasouli, Mohammad and Kepler, Christopher and Restrepo, Santiago and Albert, Todd and Radcliff, Kris (2016) Pelvic Incidence in Patients with Hip Osteoarthritis. The Archives of Bone and Joint Surgery, 4 (2). pp. 132-136.

ABJS_Volume 4_Issue 2_Pages 132-136.pdf

Download (832kB) | Preview


  Background: Hip osteoarthritis (OA) is a major cause of pain and disability that results in considerable social and medical costs. Mechanics such as posture, alignment and orientation of the hips and the spinal column and the relationship between these factors have been implicated in the development of both hip and spine pathologies. This study aims to test the hypothesis if pelvic incidence varies in patients with and without osteoarthritis. We assessed the relationship between spinopelvic alignment as measured by pelvic incidence (PI) and the presence of hip OA. Methods: We collected supine pelvis CT scans of 1,012 consecutive patients not known to have hip OA. Our first group consisted of 95 patients with moderate to severe hip OA as per radiology reports. The second group included 87 patients with no evidence of hip OA. Power analysis revealed the need for 77 patients per group to find a mean difference in PI of 5º or less between both groups. Two trained physicians independently measured the PI to account for inter-observer reliability. Results: Patients with moderate to severe hip OA had a mean PI of 56.5º±12.8º. The mean PI for patients without hip OA was 57.2º±7.5º. An independent samples t-test revealed no significant difference between the PI values of the two groups. Spearman�s correlation coefficient of 0.754 demonstrated a high inter-observer reliability. Conclusion: There was no difference in PI angle of hip OA patients and

Item Type: Article
Subjects: WE Musculoskeletal system
WO Surgery
Divisions: Journals > Archives of Bone & Joint Surgery
Depositing User: abjs abjs
Date Deposited: 24 Sep 2017 15:47
Last Modified: 24 Sep 2017 15:47

Actions (login required)

View Item View Item