经皮微创植入锁定钢板治疗胫骨远端骨折

目的探讨应用胫骨远端锁定钢板经皮微创植入治疗胫骨远端骨折的疗效。方法自2010年1月~2012年12月应用小切口植入胫骨远端锁定钢板治疗32例胫骨远端骨折,男19例,女13例,年龄13~77岁,平均39.8岁。其中开放性骨折4例,闭合性骨折28例,均为新鲜骨折。结果 29例获得随访,随访时间6~15个月,平均11.7个月。所有骨折均愈合,平均愈合时间为13.6周,均无感染、骨不连、钢板松动等并发症。按照Mazur踝关节功能评分:优19例,良8例,可2例,优良率为93.1%。结论微创钢板内固定手术创伤小,固定可靠,骨折愈合率高,符合生物学固定原则。     

一种平板流动腔重力灌流系统的力学分析

本文分析了一种采用重力灌流的平板流动腔灌流系统，并根据实验结果确定出相应的阻力系数，获得平板流动腔剪应力、雷诺数以及入口长度与流体重力灌流高度的关系。     

老年转子间骨折角型钢板治疗失误和并发症分析

目的分析角型钢板治疗股骨转子间骨折中出现的各种失误和并发症,并提出预防措施。方法1990年10月以来共治疗股骨转子间骨折68例,逐例分析治疗失误的原因。结果术中操作失误致股骨外侧皮质崩裂2例;钢板刀口穿破股骨头进入髋臼1例,术后切口感染1例,共8例出现并发症,发生率14．7％。结论角型钢板治疗股骨转子间骨折效果好,但不应忽视可能发生的各种失误和并发症。     

绝经后骨质疏松性椎体压缩性骨折患者血清雌激素、前脂肪因子-1水平与骨代谢和骨密度相关性研究

目的 研究绝经后骨质疏松性椎体压缩性骨折（osteoporotic vertebral compression fracture,OVCF）患者血清雌激素、前脂肪因子-1（preadipose factor-1,Pref-1）水平与骨代谢和骨密度的相关性。方法 纳入湛江中心人民医院2019年1月至2020年11月期间确诊的64例绝经OVCF患者为OVCF组,同时纳入绝经后的健康女性45名为对照组,比较OVCF组和对照组血清中雌二醇、Pref-1水平,并根据OVCF患者血清中雌二醇、Pref-1的水平分为高低亚组,进行患者骨代谢、骨密度等一系列指标的比较,通过Preason相关性分析雌二醇、Pref-1的水平与骨代谢、骨密度指标的相关性。结果 OVCF患者血清中雌二醇水平较对照组显著降低（t=13.275,P<0.05）,Pref-1水平显著上升（t=10.360,P<0.05）;雌二醇高表达组较低表达组患者血清中25-（OH）VitD、N-MID的水平以及腰椎骨密度、髋部骨密度均显著上升（t=7.378,5.472,10.290,9.774,P<0.05）,PINP、β-CTX水平均显著降低（t=6.447,9.103,P<0.05）;Pref-1高表达组较低表达组患者血清中25-（OH）VitD、N-MID的水平以及腰椎骨密度、髋部骨密度均显著下降（t=8.350,7.426,12.376,10.450,P<0.05）,PINP、β-CTX水平均显著升高（t=8.266,11.205,P<0.05）;OVCF患者血清雌二醇水平与25-（OH）VitD、N-MID以及腰椎骨密度、髋部骨密度均呈正相关（r>0,P<0.05）,与PINP、β-CTX水平呈负相关（r<0,P<0.05）;Pref-1与25-（OH）VitD、N-MID的水平及腰椎骨密度、髋部骨密度均呈负相关（r<0,P<0.05）,与PINP、β-CTX水平呈正相关（r>0,P<0.05）。结论 绝经后OVCF患者血清雌激素显著下调,Pref-1水平明显上调,且二者与骨代谢和骨密度指标之间存在密切相关性,对二者水平的医学干预或能为OVCF的临床治疗带来新的契机。     

Treatment of spinal cord compression caused by C2 osteochondroma with reconstruction and fusion after total resection: Case report and literature review

Context: Osteochondroma is the most common benign tumor of the bone, but spinal osteochondroma is rare. We report a case of cervical osteochondroma in multiple exostoses arising from the lamina of the C2 vertebra, presenting with features of compressive myelopathy in a 22-year-old male. Total resection of the tumor and atlantoaxial fixation and fusion after reconstruction of the C1 posterior arch were performed.Findings: The patient recovered significantly. He was asymptomatic and no sign of recurrence was observed after one-year follow-up.Conclusions: Osteochondroma should be considered as a rare cause of spinal cord compression. Entire removal of the tumor will result in complete decompression and can reduce the risk of recurrence. We provide a new approach to reconstruct after resection.     

骨盆前环皮下内固定支架与微创经皮钢板内固定治疗骨盆前环骨折的疗效比较

目的 比较前环皮下内固定支架（INFIX）和微创经皮钢板内固定（MIPPO）治疗骨盆前环骨折的疗效。方法 回顾性分析2016年7月至2020年5月我院收治且符合标准的48例不稳定型骨盆骨折病人的临床资料,其中INFIX组22例,MIPPO组26例。INFIX组,男15例,女7例,年龄为（36.89±11.12）岁（21~58岁）。MIPPO组,男17例,女9例,年龄为（43.70±17.66）岁（21~71岁）。比较两组手术时间、术中出血量、骨折复位质量（Matta标准）、骨折愈合时间、骨折术后功能恢复情况（Majeed评分系统）,并记录并发症。结果 两组均获得随访,随访时间为5~17个月,平均为13个月。INFIX组手术时间[（75.41±15.25） min]低于MIPPO组[（85.62±17.92） min],差异无统计学意义（t=-5.154,P=0.101）;INFIX组术中出血量[（30.27±7.67） mL]明显低于MIPPO组[（111.15±24.30） mL],差异有统计学意义（t=-14.971,P=0.006）;两组负重时间[（16.00±2.06）周vs.（15.94±2.32）周]、Majeed评分[（81.90±7.73）分vs.（83.44±3.54）分]、骨折复位优良率[81.8% vs.84.6%]比较,差异均无统计学意义（P均＞0.05）,但MIPPO组能够达到更好的解剖复位。INFIX组1例病人出现股外侧皮神经损伤,两组病人未出现内固定失败情况。结论 治疗骨盆前环骨折,INFIX具有出血少、手术创伤小等优点,钢板能够达到更好的解剖复位,两组具有相似的术后功能恢复情况。可根据术者经验和病人具体情况选择适宜的固定方式。     

Tension band plates have greater risks of complications in temporary epiphysiodesis

PurposeThis study aimed to compare the efficacy of decreasing leg-length discrepancy (LLD) and postoperative complications between tension band plates (TBP) and percutaneous transphyseal screws (PETS).MethodsThis retrospective study reviewed LLD patients who underwent temporary epiphysiodesis at the distal femur and/or proximal tibia from 2010 to 2017 (minimum two years follow-up). Efficacy of decreasing LLD was assessed one and two years postoperatively. Complications were classified with the modified Clavien-Dindo-Sink complication classification system. Knee deformities were assessed by percentile and zone of mechanical axis across the tibial plateau.ResultsIn total, 53 patients (25 boys, 28 girls) underwent temporary epiphysiodesis (mean age, 11.4 years). The efficacy of decreasing LLD at two years between the TBP (n = 38) and PETS (n = 15) groups was comparable. Seven grade III complications were recorded in six TBP patients and in one PETS patient who underwent revision surgeries for knee deformities and physis impingement. Four grade I and two grade II complications occurred in the TBP group. The mechanical axis of the leg shifted laterally in the PETS group and medially in the TBP groups (+7.1 percentile versus -4.2 percentile; p < 0.05). Shifting of the mechanical axis by two zones was noted medially in four TBP patients and laterally in two PETS patients.ConclusionMore implant-related complications and revision surgeries for angular deformities were associated with TBP. A tendency of varus and valgus deformity after epiphysiodesis using TBP and PETS was observed, respectively. Patients and families should be informed of the risks and regular postoperative follow-up is recommended.Level of evidenceLevel III