Incidence of delayed union one year after peri-acetabular osteotomy based on computed tomography.

Abstract:

BACKGROUND:Pubic bone nonunion and delayed union are reported as post-operative complications after peri-acetabular osteotomy (PAO). However, few studies have determined the incidence of delayed union using computed tomography (CT) scans. This study aimed to determine the incidence of delayed union at one year after PAO using X-ray and CT scans. METHODS:We performed a retrospective review of 150 hips in 132 consecutive patients with acetabular dysplasia who underwent PAO between January 2012 and June 2016 and evaluated 107 hips for which pelvic CT scans taken at one year after PAO were available. Clinical evaluations included age at surgery, weight, body mass index (BMI) and history. Radiographic evaluations were to assess pubic, ischial and iliac delayed union at one year post-operatively. RESULTS:Based on X-ray analysis, the incidence of delayed union in the pubic, ischial and iliac bones was 11.2% (12 hips), 5.6% (6 hips) and 0% (0 hips), respectively, and20.6% (22 hips), 8.4% (9 hips) and 0% (0 hips), respectively, based on CT scans. CONCLUSION:The incidence of delayed union of the pubis and ischium at one year after PAO according to CT scans was higher than that based on X-ray imaging. CT scans are useful in patients with some symptoms at the osteotomy site. LEVEL OF EVIDENCE:Level III.

journal_name

Int Orthop

authors

Akiho S,Kinoshita K,Matsunaga A,Ishii S,Seo H,Nishio J,Yamamoto T

doi

10.1007/s00264-017-3656-2

subject

Has Abstract

pub_date

2018-05-01 00:00:00

pages

1029-1034

issue

5

eissn

0341-2695

issn

1432-5195

pii

10.1007/s00264-017-3656-2

journal_volume

42

pub_type

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