High long-term local control with sacrectomy for primary high-grade bone sarcoma in children

Background  

Sacrectomy may offer curative potential for primary sarcomas of the sacrum. However, it is unclear whether and to what extent sacrectomies achieve local control.     

Online Professional Networks for Physicians: Risk Management

Background  

The rapidly developing array of online physician-only communities represents a potential extraordinary advance in the availability of educational and informational resources to physicians. These online communities provide physicians with a new range of controls over the information they process, but use of this social media technology carries some risk.     

High rate of infection control with one-stage revision of septic knee prostheses excluding MRSA and MRSE

Background  

The rate of infection control for one-stage revision of infected knee arthroplasties is unclear as are the factors influencing infection control. Such factors include duration of infection and the type of infected prosthesis.     

早期防治严重创伤行骨科手术并发脂肪栓塞综合征40例临床观察

目的探讨早期防治严重创伤行骨科手术并发脂肪栓塞综合征的临床特点和治疗方法。方法选取2008年7月—2012年3月因严重创伤行骨科手术并发脂肪栓塞患者40例,随机分为A组17例、B组23例。两组在综合治疗治疗基础上,分别给予0.1、0.2 g甲泼尼龙静脉注射,比较两组治疗前后血氧浓度、PaO2、血红蛋白、血小板和心率。结果血氧浓度、PaO2、血红蛋白、血小板和心率治疗后A组分别为(91.57±3.37)mm Hg(1 mm Hg=0.133 kPa)、(90.17±2.01)%、(116.82±3.96)g/L、(107.62±5.13)×109/L、(88.94±8.48)次/min,B组分别为(99.31±3.72)mm Hg、(94.24±1.59)%、(124.09±3.14)g/L、(112.37±3.96)×109/L、(95.26±8.26)次/min,比治疗前均有明显好转,差异均有统计学意义(均P<0.05),但是两组患者之间比较差异均无统计学意义(均P>0.05)。结论严重创伤行骨科手术并发脂肪栓塞综合征临床表现复杂,应进行积极预防和治疗,减少不良后果发生。     

Distraction osteogenesis using a longitudinal corticotomy

Purpose  

The purpose of this study was to evaluate whether the use of a longitudinal corticotomy (S-Z osteotomy) results in more rapid consolidation following distraction osteogenesis of short tibiae.     

The Bicontact cementless primary total hip arthroplasty: long-term results

We report on a prospective series of 201 primary uncemented total hip arthroplasties with a Bicontact prosthesis at a mean follow-up of 12.9 years. The mean Harris hip score improved from 41 before surgery to 89 at final follow-up. Two femoral stems, one each for infection and fracture, and 12 cups were revised. The mean number of years to revision post-primary surgery was 8.7 years (six months to 16 years). The cumulative survival of the prosthesis was 95.42% for any cause at ten years and 93.57% at 12 years. Survivorship for aseptic loosening of the femoral stem was 100%. In our series, the Bicontact uncemented total hip arthroplasty stem without hydroxyapatite coating showed excellent survival and the cup survival was comparable to other leading series.     

Higher BMP receptor expression and BMP-2-induced osteogenic differentiation in tendon-derived stem cells compared with bone-marrow-derived mesenchymal stem cells

Purpose  

Surgical reattachment of tendon to bone often fails due to regeneration failure of the specialised tendon–bone junction (TBJ). The use of mesenchymal stem cells for TBJ regeneration has been reported with promising results. Tendon-derived stem cells (TDSCs) with high proliferative and multi-lineage differentiation potential have been isolated. As stem cells residing in tendons, TDSCs can be considered a new cell source for TBJ repair. Bone morphogenic protein 2 (BMP-2) is a potent osteogenic factor with roles in normal bone healing and pathological ectopic bone formation in soft tissues. The use of BMP-2 to promote TBJ repair has been well reported. This study aimed to compare TDSCs to the gold standard bone-marrow-derived mesenchymal stem cells (BMSCs) with respect to osteogenic response to BMP-2 in vitro.     

Heat distribution of polymerisation temperature of bone cement on the spinal canal during vertebroplasty

Purpose  

In the last 15 years, vertebroplasty and kyphoplasty have become established operative procedures for treating osteoporotic vertebral-body fractures and vertebral bodies afflicted with metastases. These procedures are quickly performed with few personnel and material resources and have a low rate of complications. However, cases of neurological impairment are reported in the scientific literature. We analysed whether potentially harmful heat is radiated/conducted by the polymerisation temperature of polymethylmethacrylate (PMMA) bone cement in the spinal canal.