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 Orthopjournal_title
International orthopaedicsauthors
Akiho S,Kinoshita K,Matsunaga A,Ishii S,Seo H,Nishio J,Yamamoto Tdoi
10.1007/s00264-017-3656-2subject
Has Abstractpub_date
2018-05-01 00:00:00pages
1029-1034issue
5eissn
0341-2695issn
1432-5195pii
10.1007/s00264-017-3656-2journal_volume
42pub_type
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