RT Journal Article
SR Electronic
T1 The radiological research for pelvis asymmetry of unilateral developmental dysplasia of the hip in adult
JF Saudi Medical Journal
JO Saudi Med J
FD Prince Sultan Military Medical City
SP 1344
OP 1349
DO 10.15537/smj.2016.12.15945
VO 37
IS 12
A1 Li, Ya-Min
A1 Li, Jue-Hong
A1 Li, Bin
A1 Wang, Jia-Xing
A1 Chen, Yun-Su
YR 2016
UL http://smj.org.sa/content/37/12/1344.abstract
AB Objectives To investigate whether adult patients with unilateral developmental dysplasia of the hip (UDDH) have pelvic asymmetry and what correlation existing between them.Methods A total of 100 adult patients with UDDH were enrolled in the retrospective observational study in Shanghai Jiaotong University Affiliated Sixth People’s Hospital, Shanghai, China, between January 2012 and February 2014. The anteroposterior pelvic radiographs were reviewed and the pelvic heights and ischium heights were measured and compared between the affected and non-affected sides to find out the relationship between the pelvic morphology and hip dysplasia.Results The pelvic heights demonstrated significant differences between the non-affected side and the affected side in patients with Crowe type II-IV UDDH (p<0.05), but not in patients with Crowe type I UDDH (p=0.09). There were significant differences in the bilateral ischium heights in patients with Crowe type III and IV UDDH (p<0.05), but not in patients with Crowe type I and II UDDH (p=0.78, p=0.055). In addition, the degree of hip dysplasia was positively associated with the degrees of asymmetry of pelvis (r=0.78, p<0.001) and ischium (r=0.72, p<0.001) in UDDH patients.Conclusion The pelvic asymmetry exists in adult patients with UDDH. In addition, the degree of asymmetry has correlation with the degree of hip dysplasia. We recommend that it should be taken more cautions to use teardrops and ischial tuberosity as anatomy landmarks to balance leg-length discrepancy for unilateral DDH patients in preoperative planning and total hip arthroplasty.