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find Keyword "距骨" 26 results
  • The Diagnostic Value of Spiral CT Reconstruction in Talus Fractures

    目的:研究距骨骨折螺旋CT轴扫、多平面(MPR)和三维(3D)重建图像的特点及其临床意义。方法:收集距骨骨折患者术前螺旋CT资料12例,同时进行了MPR和3D重建图像。着重分析距骨骨折线的走行、与关节面的关系、关节面塌陷程度等,并评价轴扫、MPR和3D重建图像的优势。结果:在12例距骨骨折者骨踝关节受累7例。MPR和3D重建图像可直观显示骨折详细情况。结论:螺旋CT轴扫、多平面和三维重建图像相结合,可更好显示距骨骨折的情况,能为临床术前诊断和治疗提供有价值的影像信息。

    Release date:2016-09-08 09:56 Export PDF Favorites Scan
  • TREATMENT OF AVASCULAR NECROSIS OF TALUS WITH VASCULARIZED BONE GRAFT

    In order to study the curative effect of vascularized bone graft in the treatment of avascular necrosis of talus, 24 patients were treated with vascularized bone grafts, in which 9 cases had received 1st cuneiform bone graft with a malleolaris anteriomedialis, 4 cases with the 1st cuneiform bone graft with the medial tarsal artery and 11 cases with vascularized cuboid bone graft with the lateral tarsal artery. All of the patients were followed up for 3-5.5 years. The clinical observation and X-ray examination showed that function of the ankle joint was completely or almost normal in 16 cases, and the bone repair was excellent. There was slight pain in the ankle joint in 4 cases. The efficiency rate of the treatment was 83.3%. It could be concluded that vascularized bone graft might be an effective method in the treatment of avascular necrosis of talus.

    Release date:2016-09-01 11:07 Export PDF Favorites Scan
  • Progress in surgical treatment of osteochondral lesion of talus

    Objective To provide a comprehensive overview of the surgical treatments of osteochondral lesion of talus (OLT) and offer valuable insights for clinical practice. Methods The advantages and limitations of surgical treatments for OLT were comprehensively summarized through an extensive review of domestic and abroad relevant literature in recent years. Results Currently, there exist numerous surgical treatments for the OLT, all of which can yield favorable outcomes. However, each method possesses its own set of merits and demerits. The short-term effectiveness of bone marrow stimulation in treating primary OLT with a diameter less than 15 mm is evident, but its long-term effectiveness diminishes over time. Autologous osteochondral transplantation (AOT) and osteochondral allograft transplantation (OAT) are suitable for OLT with large defects and subchondral bone cysts. However, incomplete anatomical matching between the donor and recipient bones may results in the formation of new subchondral bone cysts, while AOT also presents potential complications at the donor site. In contrast to AOT and OAT, particulated juvenile cartilage allograft transplantation obviates the need for additional osteotomy. Furthermore, juvenile cartilage exhibits enhanced potential in delivering active chondrocytes to the site of cartilage defect, surpassing that of adult cartilage in tissue repair efficacy. Cell transplantation has demonstrated satisfactory effectiveness; however, it is associated with challenges such as the requirement for secondary surgery and high costs. Autologous matrix-induced chondrogenesis technology has shown promising effectiveness in the treatment of primary and non-primary OLT and OLT with large defect and subchondral bone cysts. However, there is a scarcity of relevant studies, most of which exhibit low quality. Adjuvant therapy utilizing biological agents represents a novel approach to treating OLT; nevertheless, due to insufficient support from high-quality studies, it has not exhibited significant advantages over traditional treatment methods. Furthermore, its long-term effectiveness remain unclear. Conclusion The optimal choice of surgical treatment for OLT is contingent not only upon the characteristics such as nature, size, and shape but also takes into consideration factors like advancements in medical technology, patient acceptance, economic status, and other pertinent aspects to deliver personalized treatment.

    Release date:2024-03-13 08:50 Export PDF Favorites Scan
  • 踝关节牵张术联合同种异体骨软骨移植治疗距骨骨软骨损伤一例

    Release date:2023-02-13 09:57 Export PDF Favorites Scan
  • 带旋髂深血管蒂髂骨瓣移植治疗距骨坏死

    Release date:2016-09-01 09:33 Export PDF Favorites Scan
  • 上胫腓联合复合组织移植修复外踝并距骨骨缺损

    目的 总结上胫腓联合复合组织移植修复外踝并距骨骨缺损的方法及疗效。 方法2006年7月-2009年1月,收治4例外踝并距骨骨缺损男性患者。年龄15~42岁。交通事故伤3例,砸伤1例。损伤至手术时间10 d~4个月。外踝骨缺损3.5~8.0 cm,距骨骨缺损2.0~3.5 cm。3例先对创面行腓肠神经营养皮瓣移植修复,待皮瓣成活后行骨组织重建;1例一期完成皮瓣修复及骨组织重建。带血管蒂腓骨移植2例,游离腓骨移植2例。 结果术后供区切口及创面Ⅰ期愈合。4例均获随访,随访时间24~38个月,平均27.6个月。移植骨成活良好,骨瓣愈合时间4~ 7个月。末次随访时患者步态均正常。踝关节功能根据Baird-Jackson评分系统评定:获优2例,良1例,可1例,优良率75%。 结论腓骨头形态与外踝相似,应用上胫腓联合复合组织移植修复外踝并距骨骨缺损是一种有效方法。

    Release date:2016-08-31 04:24 Export PDF Favorites Scan
  • OPERATIVE TREATMENT OF DISPLACED TALAR NECK FRACTURES WITH ABSORBABLE LAG SCREW

    OBJECTIVE: To study a new kind of operation for displaced talar neck fractures. METHODS: From April 1996 to March 2001, 9 talar neck fractures were treated by internal fixation of absorbable lag screw with a medial approach and cut of medial malleolus to expose the fractures. A non-weight-bearing below-knee cast was applied for 6 to 12 weeks after operation. Once union of the fracture site is apparent, the patient should remain non-weight bearing in a removable short-leg and keep exercise every day. RESULTS: All the patients received follow-up from 15 to 60 months with an average of 28 months. The fractures healed from 20 to 42 weeks. The excellent and good rate of function was 77.8% (7/9) according to American Orthopedic Foot and Ankle Society Score(AOFAS). One case had the complication of superficial infection of wound and skin edge necrosis after operation, which was Hawkins type III. Late complication included two cases of avascular necrosis(AVN). Among them, one AVN of Hawkins type II was caused by early weight-bearing five weeks after operation and gained the fair score. The other AVN of Hawkins type III was inefficient to conservative therapy and proceeded ankle fusion in the end. The AOFAS of the patient was bad. CONCLUSION: Treatment of talar neck fractures by internal fixation of absorbable lag screw with a medial approach is an ideal method. It can gain a satisfactory result by the operation, strict postoperative care and rehabilitation.

    Release date:2016-09-01 09:35 Export PDF Favorites Scan
  • Micro-fracture therapy combined with intra-articular injection of platelet-rich plasma for small sized osteochondral lesion of the talus

    ObjectiveTo investigate the effectiveness of micro-fracture therapy combined with intra-articular injection of platelet-rich plasma (PRP) in the treatment of small sized osteochondral lesion of the talus (OLT).MethodsBetween September 2014 and October 2017, 43 patients with small sized OLT met the inclusive criteria were admitted and randomly divided into micro-fracture group (21 cases) and combined group (22 cases). Patients in the micro-fracture group were treated with micro-fracture therapy, and patients in the combined group were treated with micro-fracture therapy combined with intra-articular injection of PRP. There was no significant difference in gender, age, disease duration, side of OLT, injured position, lesion area, Mintz classification, and preoperative American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hind foot score and visual analogue scale (VAS) score between the two groups (P>0.05). After treatment, MRI, VAS score, and AOFAS ankle-hind foot score were used to evaluate the recovery of OLT and the ankle function.ResultsAll incisions healed by first intention, and no complications such as venous thrombosis and ankle joint infection occurred. All patients were followed up 12-18 months after operation, with an average of 15.6 months. The VAS scores and the AOFAS ankle-hind foot scores were significantly improved at 6 and 12 months after operation in the two groups (P<0.05), and the scores at 12 months were significantly improved when compared with postoperative scores at 6 months (P<0.05). Compared with the micro-fracture group, the VAS score and the AOFAS ankle-hind foot score were significantly improved in the combined group at 6 and 12 months after operation (P<0.05). MRI showed that OLT was well filled in both groups at 12 months after operation.ConclusionCompared with micro- fracture therapy, micro-fracture therapy combined with intra-articular injection of PRP can effectively reduce pain, improve ankle function, and has a good effectiveness in the treatment of small sized OLT.

    Release date:2020-02-18 09:10 Export PDF Favorites Scan
  • 距骨骨折脱位32 例治疗

    目的 探讨距骨骨折及距骨与周围关节脱位的处理方法。方法 1998年2月~2005年10月收治32例距骨骨折脱位。其中男23例,女9例;年龄19~56岁。车祸伤13例,坠落伤10例,压砸伤7例,扭伤2例。其中开放性损伤7例,伴同侧肢体或踝部骨折、韧带损伤10例,脾破裂1例。距骨颈骨折按Hawkins分类:Ⅰ型5例,Ⅱ型12例,Ⅲ型7例,Ⅳ型2例,距骨体骨折4例,距骨头骨折2例。伤后2~26 h进行治疗。手术切开复位者以2枚螺丝钉内固定,距骨体粉碎性骨折者行距下关节融合术。结果 32例均获随访6个月~7年,术后疗效按Kenwright 4级分类法评定,闭合性复位7例,优5例,良2例;切开复位内固定14例,优6例,良3例,可3例,差2例;开放性损伤7例,优1例,良2例,可2例,差2例;距下关节融合术4例,优1例,良2例,可1例。结论 距骨骨折或脱位后及时取得良好复位,恢复正确解剖关系对稳定足部非常重要,合理处理能最大限度恢复踝关节功能。

    Release date:2016-09-01 09:23 Export PDF Favorites Scan
  • Effectiveness and mechanism of pure platelet-rich plasma on osteochondral injury of talus

    Objective To explore the effectiveness and mechanism of pure platelet-rich plasma (P-PRP) on osteochondral injury of talus. Methods Thirty-six patients with osteochondral injury of talus selected between January 2014 and October 2017 according to criteria were randomly divided into control group (group A), leukocyte PRP (L-PRP) group (group B), and P-PRP group (group C), with 12 cases in each group. There was no significant difference in gender, age, disease duration, and Hepple classification among the three groups (P>0.05). Patients in the groups B and C were injected with 2.5 mL L-PRP or P-PRP at the bone graft site, respectively. Patients in the group A were not injected with any drugs. The American Orthopaedic Foot and Ankle Society (AOFAS) score and visual analogue scale (VAS) score were used to evaluate the effectiveness before operation and at 3, 6, and 12 months after operation. Study on the therapeutic mechanism of P-PRP: MC3T3-E1 cells were randomly divided into control group (group A), L-PRP group (group B), and P-PRP group (group C). Groups B and C were cultured with culture medium containing 5% L-PRP or P-PRP respectively. Group A was cultured with PBS of the same content. MTT assay was used to detect cell proliferation; ELISA was used to detect the content of matrix metalloprotein 9 (MMP-9) protein in supernatant; alkaline phosphatase (ALP) activity was measured; and real-time fluorescence quantitative PCR (qRT-PCR) was used to detect the expression of osteopontin (OPN), collagen type Ⅰ, and MMP-9 in cells. Western blot was used to detect the expression of MMP-9 in supernatant and phosphoinositide 3-kinase (PI3K), phosphorylated protein kinase B (pAKT), and phosphorylated c-Jun (p-c-Jun) in cells. ResultsAll patients were followed up 13-25 months, with an average of 18 months. No complication such as wound infection and internal fixation failure occurred. MRI showed that the degree of injury was similar between the three groups before operation, and patients in the three groups all recovered at 6 months after operation. Moreover, group C was superior to groups A and B. Compared with preoperation, AOFAS scores and VAS scores in the three groups were all significantly improved at each time point after operation (P<0.05). AOFAS score of group C was significantly higher than that of groups A and B at 3, 6, and 12 months after operation (P<0.05); there was no significant difference in VAS score between the three groups (P>0.05). Study on the therapeutic mechanism of P-PRP: The absorbance (A) value, ALP activity, the relative mRNA expression of OPN and collagen type Ⅰ in group C were significantly higher than those in groups A and B (P<0.05), and those in group B were significantly higher than those in group A (P<0.05). The relative expression of MMP-9 protein and mRNA and the content of MMP-9 protein detected by ELISA in group B were significantly higher than those in groups A and C, while those in group C were significantly lower than those in group A (P<0.05). Western blot detection showed that the relative expression of PI3K, pAKT, and p-c-Jun protein in group B was significantly higher than those in groups A and C (P<0.05), but there was no significant difference between groups A and C (P>0.05). Conclusion P-PRP is superior to L-PRP for osteochondral injury of talus, which may be related to the inhibition of PI3K/AKT/AP-1 signaling pathway in the osteoblast, thereby reducing the secretion of MMP-9.

    Release date:2019-05-06 04:48 Export PDF Favorites Scan
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