Makhmalbaf Hadi, Kachooei Amir Reza, Mazloumi Seyed Mahdi, Ebrahimzadeh Mohamad, Omidi-Kashani Farzad, Seyf Parham, Ebrahimi Hengameh, Bekhradianpoor Nastoor, Shiravani Bakhtiari Reza
Orthopedic and Trauma Research Center, Mashhad University of Medical Sciences, Mashhad, IR Iran.
Department of Educational Nursing, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran.
Iran Red Crescent Med J. 2013 Dec;15(12):e13366. doi: 10.5812/ircmj.13366. Epub 2013 Dec 5.
The prevalence of DDH ranges from 1 per1000 to 3.4 per 100 live- births. One- and-one-half hip spica cast is the conventional technique of immobilization after the open reduction with or without osteotomy.
In this study, we evaluated the preference of bilateral one-half spica cast over the one-and-one-half spica cast.
Eight hips in five patients with developmental dislocation of the hip have undergone open reduction. Salter osteotomy, Pemberton osteotomy and femoral shortening were done on two, two and six hips, respectively. Bilateral one-half spica cast with trochanteric molding was applied for all of the hips.
The patients' age ranged from 1.5 to 7 years old. The only complications consisted of two osteonecrosis of the head and one superficial infection. No dislocation, graft displacement, nonunion and device failure was occurred.
Bilateral one-half spica cast is sufficient after the open reduction with or without osteotomy in DDH patients and we can substitute the bilateral one-half spica cast above the knee cast for the conventional one and one-half spica cast.
发育性髋关节发育不良（DDH）的发病率为每1000例活产中有1例至每100例活产中有3.4例。单髋人字石膏固定是切开复位（无论是否行截骨术）后常用的固定技术。
在本研究中，我们评估了双侧半髋人字石膏相对于单髋人字石膏的优势。
5例发育性髋关节脱位患者的8个髋关节接受了切开复位。分别对2个髋关节进行了Salter截骨术，2个髋关节进行了Pemberton截骨术，6个髋关节进行了股骨缩短术。所有髋关节均采用带转子塑形的双侧半髋人字石膏固定。
患者年龄在1.5至7岁之间。仅出现了2例股骨头坏死和1例浅表感染等并发症。未发生脱位、植骨移位、骨不连和内固定失败。
对于DDH患者，无论是否行截骨术，切开复位后双侧半髋人字石膏固定已足够，我们可以用双侧半髋膝上石膏替代传统的单髋人字石膏。
