椎弓根螺钉复位固定加不同的植骨方法 治疗腰椎滑脱的疗效比较

目的探讨不同类型腰椎滑脱的手术治疗方法、疗效及优缺点。方法应用后路椎弓根螺钉加不同的植骨方法共治疗腰椎滑脱患者50例，按植骨方法不同，随机分为A、B、C三组，比较术后疗效、复位率、植骨融合率及复位丢失率等。结果门诊随访6个月～3年，结果显示44例基本上达解剖复位，优37例，良7例，优良率达88．0％，后外侧植骨16例中有6例复位丢失，其中1例发生椎弓根螺钉断裂。结论对于不同类型的腰椎滑脱可采用经椎弓根螺钉复位固定加不同类型的植骨方法，其中以椎间植骨及椎间cage植骨融合率较高，复位无丢失，是一种较好的治疗腰椎滑脱的方法。     

一种新型颈椎椎弓根置钉定位器的研制

介绍一种可三维调节的颈椎椎弓根置钉定位器,该装置作为钻模应用于颈椎椎弓根的钻孔定位,实现个体化置钉。给出了设计原理、使用方法,推导出椎弓根术前影像学数据与定位器钻套调整角的关系,并编制了计算应用软件。进行了功能评价和误差分析。     

老年转子间骨折的DHS治疗

目的探讨DHS治疗老年股骨转子间骨折的疗效。方法采用AO动力髋螺钉(DHS)内固定治疗184例老年股骨转子间骨折,对其围手术期治疗及功能恢复进行疗效评价。结果182例骨折愈合,其中4例畸形愈合,平均随访18个月,Sarders评分关节功能优良率86.2%。结论老年患者的股骨转子间骨折术前应充分评估风险,早期、合理采用DHS治疗,疗效可靠。     

带锁滑动鹅头钉治疗粉碎性股骨转子间骨折的临床研究

为了总结分析运用自行研制的带锁滑动鹅头钉治疗粉碎性股骨转子间骨折的疗效,随机将69例Evan'sⅢ型、Ⅳ型的患者分为两组,一组采用自制带锁滑动鹅头钉治疗(观察组);一组采用DHS治疗(对照组).分别对两组患者的一般资料、手术资料及术后功能恢复情况进行评估比较.结果骨折平均愈合时间观察组为3.65±0.97个月,对照组为4.32±1.38个月,两组比较,术后9个月观察组患侧较健侧平均缩短0.82±0.36cm,对照组平均缩短1.08±0.51cm,两组比较差异有显著性意义(P＜0.05).观察组显效率91.1%,对照组显效率71.1%,两组比较,具有非常显著性差异(P＜0.01).提示带锁滑动鹅头钉治疗粉碎性股骨转子间骨折具有防止骨不连及各种畸形愈合.     

应用可吸收螺钉内固定治疗陈旧性腕舟状骨骨折骨不连

腕舟状骨骨折是常见的腕部骨折之一，不稳定腕舟骨骨折治疗后发生骨不连者高达46％～55％。应用可吸收螺钉内固定治疗腕舟骨骨折骨不连报道不多。1998年1月～2003年7月，我们应用可吸收螺钉治疗陈旧性腕舟状骨骨折骨不连13例，疗效满意。     

Atornillado anterior de la odontoides empleando tomografía computarizada de haz cónico intraoperatorio y navegación

ObjectiveThe purpose of this study was to asses the value of intraoperative cone-beam CT (O-arm) and stereotactic navigation for the insertion of anterior odontoid screws.Materials and methodsthis was a retrospective review of patients receiving surgical treatment for traumatic odontoid fractures during a period of 18 months.Procedures were guided with O-arm assistance in all cases. The screw position was verified with an intraoperative CT scan. Intraoperative and clinical parameters were evaluated. Odontoid fracture fusion was assessed on postoperative CT scans obtained at 3 and 6 months’ follow-upResultsFive patients were included in this series; 4 patients (80%) were male. Mean age was 63.6 years (range 35-83 years). All fractures were acute type ii odontoid fractures. The mean operative time was 116 minutes (range 60-160 minutes). Successful screw placement, judged by intraoperative computed tomography, was attained in all 5 patients (100%). The average preoperative and postoperative times were 8.6 (range 2-22 days) and 4.2 days (range 3-7 days) respectively. No neurological deterioration occurred after surgery. The rate of bone fusion was 80% (4/5).ConclusionAlthough this initial study evaluated a small number of patients, anterior odontoid screw fixation utilizing the O-arm appears to be safe and accurate. This system allows immediate CT imaging in the operating room to verify screw position.     

Does an additional antirotation U-Blade (RC) lag screw improve treatment of AO/OTA 31 A1-3 fractures with gamma 3 nail?

IntroductionPoor bone quality and unstable fractures increase the cut-out rate in implants with gliding lag screws. The U-Blade (RC) lag screw for the Gamma3^® nail was introduced to provide monoaxial rotational stability of the femoral head and neck fragment. The purpose of this study was to evaluate whether the use of the U-Blade (RC) lag screw is associated with reduced cut-out in patients with OTA/AO 31A1-3 fractures.Material & methodsBetween 2009 and 2014, 751 patients with OTA/AO 31A1-3 fractures were treated with a Gamma3^® nail at our institution. Out of this sample 199 patients were treated with U-blade (RC) lag screws. A total of 135 patients (117 female, 18 male) with standard lag screw (treatment group A) were matched equally regarding age (±4 years) sex, fracture type and location to 135 patients with U-blade (RC) lag screw (treatment group B). Within a mean follow up of 9.2 months (range 6–18 months) we assessed the cut-out rate, the calTAD, lag screw migration, the Parker's mobility score and the Parker’s ratio at postoperatively, six and 12 months following surgery. Furthermore we recorded all complications, ASA-Score, hospital stay and duration of surgery retrospectively.ResultsThe most common fracture among group B with a cut-out of the lag screw were AO/OTA 2.3 and 3.2 fractures whereas in group A cut-out was most commonly seen in AO/OTA 2.1, 2.2 and 2.3 fractures, there was no significant reduction of the cut-out rate in group B 2.2% (n = 3) compared to group A 3.7% (n = 5). The duration of surgery was significantly shorter in group A (p < 0.05). There was no significant difference in lag screw placement, the Parker’s ratio and mobilization.ConclusionIn our study the U-Blade (RC) lag screw did not reduce the cut-out in treatment of OTA/AO 31A1-3 fractures at all. Considering the longer duration of surgery and the higher costs of the U-Blade (RC) lag screw, our results do not justify its use. However, further prospective randomized studies will be necessary.     

Freehand correction of scoliosis in Rett’s syndrome

We present the case of an 18-year-old girl with a scoliosis (long C-shaped curve) in association with an atypical Rett’s syndrome. In order to attain a full correction and to provide her with adequate posture and sitting balance, segmental instrumentation was utilised from the high thoracic spine to the pelvis. We describe the procedure including the relevant pre-operative, intra-operative and post-operative imaging.     

Feasibility of use of magnesium reabsorbable scaffolds in complex coronary artery disease: True bifurcation,multiple overlapping scaffolds and chronic total occlusion treatment

We present first-in-human treatment with bioabsorbable magnesium scaffolds for percutaneous coronary intervention in a patient with nickel allergy. We present images from angiography and optical coherence tomography at three months. We also review the current status of these novel devices.