Li Chao,Huang Luyu,Xu Huifa,et al.Influence of greater trochanter drilling on neckshaft angle and femoral anteversion after open reduction for developmental dysplasia of the hip in rats.[J].Journal of Clinical Pediatric Surgery,,17():290-294.
Influence of greater trochanter drilling on neckshaft angle and femoral anteversion after open reduction for developmental dysplasia of the hip in rats.
Journal of Clinical Pediatric Surgery[ISSN:1671-6353/CN:43-1380/R]
volume:
第17卷
Number:
2018 04
Page:
290-294
Column:
实验研究
Date of publication:
2018-04-28
- Keywords:
- Epiphyses/IN; Hip Joint/GD; Coxa Valga; Rats
- Document code:
- A
- Abstract:
- ObjectiveSometimes coxa valga occur as a surgical complication for developmental dysplasia of the hip (DDH).Its cause is assumed to be intraoperative damage to trochanteric growth plate at the time of operation,but no experiment has confirmed it.The aim of this study was to corroborate the relationship between transphyseal damage and coxa valga.MethodsBy operating open reduction and transphyseal drilling on DDH in 43 neonatal Sprague Dawley (SD) rats and measuring neckshaft angle and femoral anteversion,this study explored the effect of transphyseal damage on neckshaft angle and femoral anteversion after open reduction.The legs and hips were fixed by adhesive tape in an extension and adduction position for 10 days.41 left dysplastic hips (41/43),verified on anteroposterior pelvic radiographs,were randomized,21 left hips underwent transphyseal drilling and open reduction at the age of 1 month while 20 in control group underwent open reduction.All rats were sacrificed after 1 month raising in the same condition.Fortyone left femoral speciments were scanned and input into computers for measuring to calculate neckshaft angle and femoral anteversion.ResultsMean neckshaft angle in transphyseal trauma group was larger than in control group (130.56±3.44 vs 126.57±6.04,P=0.015).No differences existed between groups in femoral anteversion (P=0.925).ConclusionIntraoperative damage to trochanteric growth plate during operation for DDH is associated with larger neckshaft angle.Improved understanding of these relationships may help to reduce the incidence of coxa valga and improve the prognosis of DDH in children.
Last Update:
2018-04-25