目的設計股骨小轉子復位固定器，并通過臨床應用驗證其應用價值及療效。方法根據股骨轉子間骨折的臨床解剖特點，設計制作股骨小轉子復位固定器。2010年1月－2012年7月，納入符合選擇標準的66例Evans Ⅲ型股骨轉子間骨折患者。將患者隨機分為兩組，試驗組32例在動力髖螺釘（dynamic hip screw,DHS）治療基礎上，使用股骨小轉子復位固定器對小轉子進行固定；對照組34例僅單純行DHS固定治療。兩組患者性別、年齡、致傷原因及骨折類型等一般資料比較，差異均無統計學意義（P＞0.05），具有可比性。比較兩組手術時間、術中出血量、術后股骨頸干角、骨折愈合時間、固定成功率及Harris髖關節功能評分。結果試驗組手術時間及術中出血量[（58.4±5.3）min和（186.3±6.6）mL]均顯著少于對照組[（78.5±6.2）min和（246.2±8.7）mL]（t=—14.040，P=0.000；t=—31.145，P=0.000）；兩組術后股骨頸干角[試驗組（138.6±3.0）°和對照組（139.4±2.9）°]比較差異無統計學意義（t=—1.044，P=0.301）。兩組手術切口均Ⅰ期愈合。試驗組30例獲隨訪，隨訪時間12～24個月，平均15個月；對照組31例獲隨訪，隨訪時間13～25個月，平均16個月。兩組骨折均順利愈合，試驗組骨折愈合時間[（8.8±2.0）周]顯著少于對照組[（10.7±3.4）周]（t=—2.871，P=0.006）。術后12個月試驗組和對照組固定成功率分別為93.3%（28/30）和67.7%（21/31），比較差異有統計學意義（χ2=6.319，P=0.022）。試驗組和對照組Harris髖關節功能評分優良率分別為83.3%（25/30）和58.1%（18/31），差異有統計學意義（χ2=4.680，P=0.049）。結論對于股骨轉子間骨折，在DHS固定基礎上應用股骨小轉子復位固定器，可減少骨折塊周圍軟組織剝離，縮短手術及骨折愈合時間，最大限度地保存髖關節功能。
目的 評價微創椎弓根釘內固定技術治療胸腰椎爆裂骨折的中期臨床療效。 方法 2002年9月－2007年9月，采用微創椎弓根釘內固定技術治療胸腰椎爆裂骨折30例。其中男16例，女14例;年齡18～65歲，平均39.8歲。骨折節段:胸11者3例， 胸12者13例， 腰1者12例， 腰者22例。所有骨折按AO分型，均為A3型。受傷至手術時間6 h～6 d，平均45 h。分析術后影像學指標、疼痛評分及功能障礙指數。 結果 患者均獲隨訪，隨訪時間3～9年，平均5.2年。術后各時間點傷椎前緣高度及后凸Cobb角均較術前明顯恢復（P＜0.01）。術后傷椎高度隨隨訪時間延長逐漸下降，后凸Cobb角逐漸增大。取出內固定物后、術后2年、末次隨訪時動力位X線片上骨折椎體前后相對滑移距離分別為（1.9 ± 0.3）、（2.1 ± 0.2）、（2.1 ± 0.3）mm，兩兩比較差異無統計學意義（P＞0.05）。術后1、2年及末次隨訪時疼痛視覺模擬評分分別為（2.5 ± 1.2）、（2.5 ± 1.1）、（2.4 ± 1.3）分，兩兩比較差異無統計學意義（P＞0.05）。末次隨訪時Denis腰痛分級：P1級13例，P2級12例，P3級5例。功能障礙指數為（11.4 ± 3.1）分，獲優23例、良5例、可2例。 結論 單純微創椎弓根釘內固定技術治療胸腰椎爆裂骨折中期臨床效果滿意，脊柱穩定性良好。Objective To mid-term efficacy of the technique of minimally invasive pedicle screw fixation on thoracolumbar burst fracture. Methods From September 2002 to September 2007, 30 patients were treated with minimally invasive pedicle screw fixation for thoracolumbar fracture. There were 16 males and 14 females with the mean age of 39.8 years (range,18-65 years). The injured level of was T11 in 3 cases, T12 in 13 cases, L1 in 12 cases, and L2 in 2 cases. The type of thoracolumbar fractures of all the patients was A3 according to AO classification. The during from injury to operation was 6 hours to 6 days with an average of 45 hours. The index of image and pain and disability index were evaluated after operation. Results All patients were followed up for 3 to 9 years with the mean of 5.2 years. Their average sliding distance after operation for removing internal fixation was (1.9 ± 0.3), and (2.1 ± 0.2) mm 2 years after the operation and (2.1 ± 0.3) mm at the latest follow-up. There was no significant difference (P＞0.05). Their average score was (2.51 ± 1.2) 1 year after the operation, was (2.42 ± 1.1) 2 year after the operation, and was (2.36 ± 1.3) at the latest follow-up (P＞0.05). According to Denis score system to evaluate index of lumbago, there was P1 in 13 cases, P2 in 12 cases, and P3 in 5 cases. The score of Oswestry Disability Index (ODI) was 11.4 ± 3.1 at the latest follow-up. Twenty-one cases gotexcellent therapeutic result, five cases got good and two were moderate. Conclusions Minimally invasive pedicle screw fixation for the treatment of thoracolumbar burst fracture provide satisfactory clinical results. The vertebral body and adjacent vertebral body have a good stability.
