Meta-analysis of the efficacy of volar plate internal fixation versus closed reduction and external fixation in the treatment of adult distal radius fractures

Objective:To compare the efficacy of open reduction and volar locking plate internal fixation with closed reduction and external fixation in the treatment of distal radius fractures by using meta analysis.Methods:The databases of CNKI,Wanfang,Weipu,Chinese biomedical literature,Pubmed,Embase,and Cochrane Library were retrieved,and the randomized controlled studies that directly compared the efficacy of plate internal fixation and closed reduction external fixation in the treatment of distal radius fractures published publicly from the establishment of the database to April 2023 were collected.The two researchers independently screened the retrieved literature according to the inclusion and exclusion criteria,extracted data,used Cochrane risk bias assessment tool for quality assessment,and used RevMan 5.4 software for meta analysis.Results:A total of 10 randomized controlled trials were included,all of which were in English.There were 1042 patients in total,and 9 of them were rated as low risk.Meta analysis results showed that one year after the treatment of distal radius fracture with volar locking plate internal fixation,DASH score[MD=-5.64,95%CI(-7.21,-4.06),P<0.00001];One year later,PRWE score[MD=-5.90,95%CI(-8.88,-2.92),P=0.001];Palm flexion[MD=5.92,95%CI(1.29,10.55),P=0.01];Pronation[MD=2.48,95%CI(0.59,4.36),P=0.01];Postrotation[MD=4.73,95%CI(2.15,7.31),P=0.0003];Grip strength[MD=0.61,95%CI(0.12,1.10),P=0.02];palmar tilt angle[MD=9.84,95%CI(5.66,14.02),P<0.00001];Radial inclination[MD=4.33,95%CI(2.97,5.69),P<0.00001]was superior to closed reduction plaster or splint external fixation.One year later,the European Five dimensional Health Scale(EQ-5D-5L)score[MD=0.02,95%CI(-0.01,0.05),P=0.27];Back extension[MD=2.22,95%CI(-4.15,8.59),P=0.49];Ulnar deviation[MD=3.49,95%CI(-0.80,7.78),P=0.11];Radial deviation[MD=2.05,95%CI(-2.39,6.50),P=0.37];Ulnar variance[MD=-1.14,95%CI(-3.16,0.88),P=0.27];There was no significant difference in complications[MD=0.77,95%CI(0.54,1.10),P=0.16](P>0.05).Conclusion:Based on the current clinical data,internal fixation with volar locking plate is more conducive to mid-term DASH score and grip strength recovery than closed reduction plaster or splint external fixation,but there is no significant difference in the quality of life and complications of patients.For adult distal radius fractures,surgical indications should be carefully grasped,and non operative treatment should be given priority.

Effect of locking compression plate internal fixation on the injury extent and bone metabolism of Robinson 2A and 2B middle clavicular fractures

Objective:To investigate the effect of locking compression plate internal fixation on the injury extent and bone metabolism of Robinson 2A and 2B middle clavicular fractures.Methods:Totally 80 cases of patients with Robinson 2A and 2B middle clavicular fractures admitted to our hospital between March 2017 and January 2019 were divided into the control group(n=41)receiving conventional kirschner wire internal fixation and the observation group(n=39)receiving locking compression plate internal fixation according to the operation plans.The differences in serum contents of inflammatory factors,oxidative stress indexes and bone metabolism indexes were compared between the two groups of patients before patients entered operating room,24 h after surgery and 48 h after surgery.Results:Before patients entered operating room,there were no statistically significant differences in the serum contents of inflammatory factors,oxidative stress indexes or bone metabolism indexes between the two groups(P>0.05).At 24 h and 48 h after surgery,serum inflammatory factors interleukin-1(IL-1),interleukin-17(IL-17),high-sensitivity C-reactive protein(hs-CRP)and tumor necrosis factorα(TNF-α)contents in the observation group were lower than those in the control group;serum reactive oxygen species(ROS)and lipid hydroperoxide(LHP)contents were lower than those in the control group,while catalase(CAT)and glutathione peroxidase(GSH-Px)contents were higher than those in the control group;serum N-terminal propeptide of procollagen type I(PINP),bone gla protein(BGP)and alkaline phosphatase(ALP)contents were higher than those in the control group,while N-telopeptide of typeⅠcollagen(NTX),C-telopeptide of typeⅠcollagen(CTX)and tartrate-resistant acid phosphatase 5b(TRACP5b)contents were lower than those in the control group(P<0.05).Conclusion:Locking compression plate internal fixation can reduce the postoperative trauma extent and help promote the fracture healing in patients with Robinson 2A and 2B middle clavicular fracture.

Comparison of Clinical Effect of PFNA and Internal Fixation with Anatomical Locking Plate of Proximal Femur in Treatment of Intertrochanteric Fracture of Femur

Purpose:To investigate the clinical value of proximal femoral nail antirotation and anatomical locking plate of proximal femur in the treatment of intertrochanteric fracture of femur.Methods:The study group is treated with PFNA internal fixation.The control group is treated by internal fixation with anatomical locking plate of proximal femur.Results:The time of operation,the amount of intraoperative bleeding and the time of fracture healing in the study group are significantly less than those in the control group.The incidence rate of complication in the study group(3.23%)is significantly lower than that in the control group(17.2%).Data comparison shows P<0.05.Conclusion:The curative effect and prognosis for patients with intertrochanteric fracture of femur treated by PFNA internal fixation are more ideal.

Dynamic External Fixator Combined with Volar Locking Plate Fixation for the Treatment of AO Type C3 Distal Radius Fractures

Background: AO type C3 distal radius fracture (DRF) is the most difficult-to-treat fracture type because of a tendency to shorten and collapse. The purpose of this study is to investigate the clinical and radiographic outcomes of comminuted intra-articular DRFs treated with a dynamic external fixator combined with a volar locking plate (VLP). Methods: Eleven patients (mean age, 61 years) with comminuted intra-articular DRFs were treated with a dynamic type of external fixator combined with a VLP. Following reduction and fixation with a VLP, the dynamic external fixator was applied and the distal ball joint of the fixator was aligned with the lunate-capitate line. The ball joint was unlocked approximately 2 weeks after surgery to allow wrist mobilization. The fixator was removed 3 - 6 weeks (mean, 5 weeks) after surgery. Consequently, clinical and radiographic assessments were carried out at the final follow-up. Results: At the final follow-up, the mean range values of wrist extension and flexion were 76&deg;and 64&deg;, respectively. Compared with the contralateral side, the mean grip strength was 84%. The mean Modified Mayo Wrist Score and the Disabilities of the Arm, Shoulder and Hand score were 88 and 9, respectively. No significant differences in the radiographic parameters exist between after surgery and final follow-up. Conclusions: This study indicated that the dynamic wrist fixator combined with a VLP is effective for the treatment of AO type C3 DRFs.

Comparison of Clinical Effect of PFNA and Internal Fixation with Anatomical Locking Plate of Proximal Femur in Treatment of Intertrochanteric Fracture of Femur

Purpose To investigate the clinical value of proximal femoral nail antirotation and anatomical locking plate of proximal femur in the treatment of intertrochanteric fracture of femur.Methods The study group is treated with PFNA internal fixation.The control group is treated by internal fixation with anatomical locking plate of proximal femur.Results The time of operation,the amount of intraoperative bleeding and the time of fracture healing in the study group are significantly less than those in the control group.The incidence rate of complication in the study group(3.23%)is significantly lower than that in the control group(17.2%).Data comparison shows P<0.05.Conclusion The curative effect and prognosis for patients with intertrochanteric fracture of femur treated by PFNA internal fixation are more ideal.

Supracutaneous Locking Compression Plate for Grade I &II Compound Fracture Distal Tibia—A Case Series

Background: Supracutaneous plating using a locking compression plate (LCP) as an external fixator in compound periarticular areas is facilitated by the development of anatomical plates. The soft tissue around the distal tibia is easily compromised by trauma and subsequent operative fracture treatment posing a definitive challenge in the distal tibia compound fractures. The purpose of this report is to describe our successful results using the metaphyseal locking compression plate (LCP) as an external fixator in the treatment of Grade I & II compound fractures of distal tibia. Methodology: A total of five (05) patients underwent “supracutaneous plating” of the tibia using a metaphyseal locking compression plate. Average age was 36 years. Regular screw tract dressings were done. Average period of follow-up was 15 months. Results: The plate was in situ for an average of 24 weeks. There were no clinically significant screw site infections. In all five patients the plate was kept in place until there was complete consolidation both clinically and radiologically. At the latest follow-up (average 15 months), all patients were fully weight bearing with a fully healed tibia. All patients were infection-free with well-healed wounds. Conclusion: Routinely, after initial debridement and temporary bony stabilization is provided by external fixation in compound fractures of the distal tibia with significant soft tissue injury. Most external frames for the lower leg are bulky and cumbersome, causing significant problems for the patient. To circumvent these issues, we have successfully used an anatomically-contoured supracutaneous metaphyseal locking compression plate as external fixator in a series of five patients for grade I & II compound fracture of the distal tibia.

Effect of Locking Compression Plate on the Treatment of Limb Fracture and the Effect of Operative Success Rate and Postoperative Recovery Time

Objective:To analyze the effect of locking compression plate on the success rate of operation and the time of postoperative recovery.Methods:120 patients with limb fractures from March 2018 to March 2020 were randomly divided into control group(60 cases)and observation group(60 cases).The control group was treated with plate screw internal fixation,The observation group used locking compression plate internal fixation,Compare the effect of treatment,the success rate of operation and the time of postoperative recovery.results:compared the effective rate of the two groups,the observation group(93.33%)was significantly higher than the control group(75.00%).Compared with the two groups,the success rate of operation and the time of postoperative recovery,the observed composition power was higher than that of the control group,and the postoperative recovery time was lower than that of the control group,P<0.05.Conclusion:The use of locking compression plate for the treatment of limb fracture can significantly increase the probability of successful operation,shorten the recovery time after operation,the overall curative effect is ideal,and the clinical popularization value is high.

Postoperative Fracture Healing Effects of Locking Compression Plate for the Treatment of Limb Fractures

Objectives To study the effects of applying locking compression plates in the treatment of patients with limb fractures on postoperative fracture healing.Methods:115 patients with limb fractures who were treated in our hospital from November 2019 to November 2020 were selected.In order to study the effective treatment method,the random-number table method was used in this study to divide the patients into two groups,namely the experimental group and the control group,and the locking compression plate treatment method and the pure plate and screw internal fixation treatment method were administered respectively to study their clinical application effects.Results:Compared with the control group,patients in the experimental group had a lower incidence of complications,shorter hospitalizations and shorter recovery time.Meanwhile,the experimental group had a better quality of recovery,and all data were significantly different from those of the control group,P<0.05,the intervention effect of the experimental group was better.Conclusion:The application of the locking compression plate in the treatment of patients with limb fractures is more conducive to promoting the postoperative healing of the patients'fractures,reducing the incidence of postoperative complications,and promoting the rapid recovery of patients,which has positive significance for clinical development.

Effects of bridge combined internal fixation system internal fixation on fracture healing and shoulder joint function in elderly patients with displaced midshaft clavicle fractures

Objective:To compare the clinical therapeutic effect of bridge combined internal fixation system and locking compression plate internal fixation in the treatment of displaced midshaft clavicle fractures by emphatically observing fracture healing and shoulder joint function.Methods:Totally 44 elderly patients with Robinson type 2B displaced midshaft clavicle fractures were included from the Department of Orthopaedics,Shenyang Fourth People's Hospital during February 2016 and December 2018,including 23 males and 21 females,mean age(69.8±10.2)years old.The patients were divided into a bridge combined internal fixation system group(bridge group,n=22)and a locking compression plate internal fixation group(plate group,n=22)according to the internal fixation methods.The operation time,intraoperative blood loss,fracture healing time,and postoperative complications were recorded.At 12 months after surgery,the shoulder joint Constant-Murley score and DASH score were used to assess the recovery of joint function.The serum levels of bone turnover biochemical markers procollagen I N-terminal peptide(P1NP),cross-linked Carboxy-terminal telopeptide of typeⅠcollagen(CTX-I),and osteoblast specific factor(OSF)were measured before and 3 months after surgery.Results:The operation time,intraoperative blood loss and fracture healing time of the bridge group were significantly shorter than those of the plate group(P<0.05).Constant scores and DASH scores in the bridge group were significantly better than those of the plate group at 12 months after surgery(P<0.05).Serum levels of CTX-I was significantly decreased,while the P1NP and OSF were significantly increased compared with before surgery in the both groups(P<0.05),and the changes were more obvious in the bridge group(P<0.05).The incidence of complications was similar between the two groups(P<0.05).Conclusion:Compared with the locking plate system,the bridge combined internal fixation system can effectively improve the operation efficiency,have more benefits on fracture healing,better promote the recovery of patients'function,and reduce the failure rate of internal fixation,thus providing a better choice to treat displaced midshaft clavicle fractures by intraoperative internal fixation.

Finite Element Analysis Study of Prototype of a Novel Intramedullary Injectable Bioresorbable Polymer Fixator versus a Volar Plate for Surgical Treatment of Distal Radius Fractures

Complications and shortcomings of volar plating, which is very widely used for surgical treatment of distal radius fractures, are well known. Thus, there is scope for alternative innovative surgical methods. In the present work, we used the finite element analysis method to compare the biomechanical performance of a model of a construct comprising a simulated distal radius fracture considered fixated using a notional intramedullary injectable bioresorbable polymer-bioresorbable balloon osteosynthesis system (“fixator”) versus using a commercially-available volar locking plate (VP). The biomechanical parameters determined were longitudinal stiffness and factor of safety under each of the applied loads.?For the fixator model, 1) each of the biomechanical parameters was markedly influenced by fracture gap fill ratio (FGFR) (defined as the proportion of the volume of the fracture gap that is considered occupied by the expanded polymer-filled balloon)?but not by modulus of elasticity assigned to the polymer;2) with FGFR = 100%, stiffness was comparable to that of the Ti-6Al-4V alloy VP construct model;and 3) stiffness was within the range of literature values for stiffness of constructs comprising simulated fractures in fresh cadaveric distal radii fixated using metal volar locking plate. These results suggest that the fixator may be an alternative modality to metal volar plating and, as such, deserves further evaluation.

Ligamentotaxis versus Open Reduction and Internal Fixation for Distal Radius Intra-Articular Fractures

Objectives: This study compared the clinical and radiological outcomes of two different methods for the treatment of distal radial intra-articular fractures. Patients and Methods: Forty-six patients with distal radius intra-arti-cular fractures were divided into two groups. Group I included 24 patients with type C fracture treated by external fixator augmented by percutaneous K-wires. Group II included 22 patients with type C fracture treated by volar locked distal radial plate augmented by K-wires. Two patients had complex injuries necessitating double plating (sandwich). All patients were evaluated clinically by Mayo Wrist Score and radiologically by Sarmiento’s radiological score. Results: Both groups reported good personal satisfaction according to Mayo Wrist Score, and the results were not statistically different between the two groups. In Group I, 19 patients (79.2%) had excellent radiological outcome and five patients (20.9%) had good radiological outcome according to Sarmiento’s radiological score. In Group II, 20 patients (90.9%) had excellent outcome, and two (9.1%) had good radiological outcome;there was no or insignificant deformity. Conclusions: Complex distal radial fractures can be treated either by external fixation (ligamentotaxis) or by locked pre-contoured plating. The clinical outcome of plating and external fixator in our study did not show any statistically significant difference. The radiological outcome had no correlation with the clinical outcome.

锁定钢板联合皮质螺钉内固定治疗踝关节骨折伴下胫腓分离对踝关节功能及生活质量的影响

目的 探讨锁定钢板联合皮质螺钉内固定治疗踝关节骨折伴下胫腓分离对踝关节功能及生活质量的影响。方法 2020年5月~2021年12月我院收治的踝关节骨折伴下胫腓分离病人120例,依据随机数字表法将其分为对照组和观察组,每组各60例。对照组采用单纯皮质螺钉固定治疗,观察组采用锁定钢板联合皮质螺钉内固定治疗。术前、术后6个月对两组恢复功能对比,比较X线片、手术时间、愈合时间、术中失血量,术后并发症,生活能力(BI)评估两组病人生活能力。依照美国足踝外科协会评分系统评估病人踝关节功能。结果 术前两组病人关节功能无差异(P>0.05),术后,对照组最远行走评分(15.89±0.85)分、足部对线评分(15.06±0.71)分、疼痛反应评分(29.03±4.48)分、地面行走评分(15.65±0.59)分;观察组分别为(16.19±0.87)分、(15.29±0.76)分、(31.24±4.55)分、(15.96±0.68)分。观察组最远行走、足部对线、疼痛反应、地面步行高于对照组,差异有统计学意义(P<0.05)。与对照组比较,观察组术中出血量少,愈合时间较短,差异有统计学意义(P<0.05)。术前两组BI指数比较,差异无统计学意义(P>0.05);观察组术后BI指数高于对照组,两组比较,差异有统计学意义(P<0.05)。两组并发症总发生率比较无差异(P>0.05)。结论 锁定钢板联合皮质螺钉内固定技术治疗踝关节骨折合并下胫腓分离,可改善踝关节功能,降低术中出血量,促进愈合,提高生活能力。

经皮双外固定架与外固定架联合接骨板治疗AO C型桡骨远端骨折的对比研究

目的比较经皮双外固定架(EF)与EF联合掌侧接骨板(VLP)治疗AO C1、C2和C3型桡骨远端骨折的疗效。方法回顾2019-2022年108例AO C型桡骨远端骨折患者的资料,其中51例患者采用双EF(无桥接骨水泥克氏针框架和传统跨腕EF)治疗,57例患者采用传统跨腕EF联合VLP治疗。测量两组患者的影像学参数(桡骨掌倾角、桡骨尺偏角、桡骨茎突高度、尺骨变异等)、腕关节活动度及握力,采用视觉模拟量表(VAS)评估腕部疼痛强度,通过上肢功能障碍评定量表(DASH)评估上肢的整体功能,通过Mayo腕关节评分系统(MWS)评估腕关节功能,采用患者满意度短期评估量表(SAPS)评估患者满意度。根据患者主诉及外科医师的综合判断评估患者的并发症发生情况。结果两组患者在年龄、性别、致伤原因、AO分型及手术时间方面差异均无统计学意义(均P>0.05);双EF组在手术等待时间、术中出血量、住院天数方面均优于EF联合VLP组(均P<0.001)。术后随访24~33个月。末次随访时,两组患者桡骨掌倾角、桡骨尺偏角、桡骨茎突高度、尺骨变异差异均无统计学意义(均P>0.05)。末次随访时,双EF组在VAS疼痛评分及SAPS患者满意度评分方面均优于EF联合VLP组(P=0.025、0.015),两组间腕关节活动范围(屈曲、背伸、桡偏、尺偏、旋前、旋后)、握力及MWS、DASH评分差异均无统计学意义(均P>0.05)。双EF组总体并发症发生率为13.73%(7/51),低于EF联合VLP组的28.07%(16/57)(P<0.05)。结论经皮双EF技术操作简单、安全、并发症少、随访效果满意,可作为OA C型桡骨远端骨折的一种治疗选择。

双切口双钢板内固定术对Schatzker V型胫骨平台骨折患者骨折愈合及关节稳定性的影响

目的探讨双切口双钢板内固定术对Schatzker V型胫骨平台骨折患者骨折愈合及关节稳定性的影响。方法回顾性分析2020年1月—2022年12月日照市人民医院收治的60例Schatzker V型胫骨平台骨折患者的临床资料,按手术方式不同将双切口双钢板内固定术治疗的30例患者设为观察组,将单侧锁定钢板固定术治疗的30例患者设为对照组。比较两组手术相关指标、膝关节功能、关节稳定性、日常生活能力、平衡能力、生活质量及并发症。结果两组患者手术时间、切口长度、术后住院时间比较,差异无统计学意义(P>0.05);观察组患者术中出血量、术后引流量多于对照组,骨折愈合时间短于对照组,差异有统计学意义(P<0.05);观察组患者术后3个月骨关节炎指数(WOMAC)中日常生活、疼痛、关节畸形及总分均低于对照组,差异有统计学意义(P<0.05);观察组患者术后3个月胫骨平台内翻角(TPA)、胫骨平台后倾角(PA)低于对照组(P<0.05);观察组患者术后3个月Barthel指数(BI)评分、Berg平衡量表(BBS)评分高于对照组,差异有统计学意义(P<0.05);观察组患者术后3个月世界卫生组织生活简易量表(WHOQOL-BREF)中生理、心理、社会及环境领域评分高于对照组,差异有统计学意义(P<0.05);两组并发症发生率比较,差异无统计学意义(P>0.05)。结论双切口双钢板内固定术治疗Schatzker V型胫骨平台骨折效果更佳,可提高关节稳定性,缩短骨折愈合时间,增强日常活动能力,安全可靠。

微创经皮钢板内固定技术在锁骨中段粉碎性骨折锁定钢板固定术中应用

目的 探讨微创经皮钢板内固定(MIPPO)技术在锁骨中段粉碎性骨折锁定钢板固定术中的应用价值。方法 回顾性选取2020年6月—2022年6月130例锁骨中段粉碎性骨折的临床资料,根据手术方法分为观察组和对照组,每组65例。对照组行传统切开复位内固定,观察组行MIPPO技术联合锁定钢板治疗。比较2组围术期指标、并发症、手术优良率及手术前后疼痛应激介质、肩关节功能指标。结果 观察组切口长度、骨折愈合时间短于对照组,术中出血量少于对照组,术后1 d疼痛视觉模拟评分法评分低于对照组(P<0.01)。术后1 d,观察组血清P物质、前列腺素E_(2)低于对照组,β内啡肽高于对照组(P<0.05);术后3、6个月,观察组Constant-Murley肩关节功能评分及肩关节前屈、后伸、外旋活动度高于对照组(P<0.05)。观察组并发症总发生率低于对照组,术后6个月手术优良率高于对照组(P<0.05)。结论 MIPPO技术联合锁定钢板治疗锁骨中段粉碎性骨折能显著提高手术优良率,减少术中出血量,促进肩关节功能恢复,抑制疼痛因子释放,缓解术后早期疼痛,还能降低并发症风险。

两种内固定术式治疗高龄无移位型股骨颈骨折的疗效

目的比较股骨近端锁定接骨板与空心螺钉内固定治疗高龄无移位型股骨颈骨折的疗效。方法根据内固定不同将66例高龄无移位型股骨颈骨折患者分为接骨板组(32例,采用股骨近端锁定接骨板内固定治疗)和螺钉组(34例,采用空心螺钉内固定治疗)。记录两组手术情况、骨折愈合时间、髋关节Harris评分、术后并发症发生情况。结果患者均获得随访,时间6~95个月。手术时间、切口长度、术中出血量、术后血红蛋白下降量两组比较差异均无统计学意义(P>0.05),下床部分负重锻炼时间接骨板组早于螺钉组(P<0.05)。接骨板组骨折均顺利愈合,时间3.5~8.0(4.63±1.04)个月;螺钉组中出现1例骨折不愈合,其余33例骨折愈合时间为3.0~7.5(5.03±1.04)个月;骨折愈合时间两组比较差异无统计学意义(P>0.05)。术后6个月髋关节Harris评分两组比较差异无统计学意义(P>0.05);但髋关节Harris评分优良率接骨板组高于螺钉组(P<0.05)。术后早期并发症发生率两组比较差异无统计学意义(P>0.05),中远期并发症发生率螺钉组高于接骨板组(P<0.05)。结论股骨近端锁定接骨板与空心螺钉内固定治疗高龄无移位型股骨颈骨折均可获得满意疗效,与空心螺钉相比,股骨近端锁定接骨板治疗早期髋关节功能恢复更好,中远期并发症更少。

经三角肌入路微型锁定钢板内固定治疗肱骨大结节骨折

2019年8月~2021年3月,我科采用经三角肌入路微型锁定钢板内固定治疗16例肱骨大结节骨折患者,效果满意,报道如下。1材料与方法1.1病例资料本组16例,男10例,女6例,年龄19~58岁。均为新鲜闭合损伤。依据Neer分型均为二部分骨折。伤后至手术时间3~8 d。

手术治疗复杂性桡骨远端骨折的效果观察

目的:探讨手术治疗复杂性桡骨远端骨折(DRF)的效果。方法:选择2019年1月—2023年1月苏州市相城人民医院收治的复杂性DRF患者80例作为研究对象,双色球法分为对照组和观察组,对照组给予外固定架治疗,观察组给予锁定加压钢板固定术治疗。比较两组临床疗效、影像学结果、并发症发生情况。结果:观察组总有效率高于对照组,差异有统计学意义(P<0.05)。治疗前,两组影像学结果比较,差异无统计学意义(P>0.05);治疗4周后,观察组桡骨短缩短于对照组,尺偏角、掌倾角大于对照组,差异有统计学意义(P<0.05)。治疗前,两组腕关节功能比较,差异无统计学意义(P>0.05);治疗4周后,观察组腕关节功能优于对照组,差异有统计学意义(P<0.05)。观察组并发症发生率低于对照组,差异有统计学意义(P<0.05)。结论:复杂性DRF患者采取锁定加压钢板固定术治疗,与外固定架治疗比较,有助于提升疗效,更好地改善影像学结果与腕关节功能,还可减少并发症发生,疗效与安全性更好。

两种内固定术治疗踝关节骨折的疗效比较

目的比较锁定钢板联合空心拉力螺钉与非锁定钢板联合普通螺钉内固定治疗踝关节骨折的疗效。方法将70例踝关节骨折患者根据治疗方法不同分为观察组(采用锁定钢板联合空心拉力螺钉内固定治疗,35例)和对照组(采用非锁定钢板联合普通螺钉内固定治疗,35例)。比较两组手术情况、骨折愈合情况、踝关节活动度、踝关节功能及并发症发生情况。结果患者均获得6个月随访。手术时间、住院时间、骨折愈合时间观察组均短(少)于对照组(P<0.05)。术中出血量、骨折愈合质量评分系统(RUSS评分)两组比较差异均无统计学意义(P>0.05)。术后3个月踝关节跖屈、背伸、内翻、外翻活动度观察组均大于对照组(P<0.05)。足部力线、地面步行、疼痛、最大步行距离评分:两组术后6个月均较术后3个月提高(P<0.05),术后3、6个月观察组均高于对照组(P<0.05)。并发症发生率观察组低于对照组(P<0.05)。结论与非锁定钢板联合普通螺钉相比,锁定钢板联合空心拉力螺钉内固定治疗踝关节骨折手术时间、住院时间、骨折愈合时间均较短,踝关节功能恢复较好,并发症较少。

桡骨远端C1型骨折三种内固定方式的有限元分析

背景:桡骨远端C1型骨折属于关节内不稳定型骨折,治疗上存在较大的难度。目前对桡骨远端骨折不同内固定接骨板的临床研究较少,缺乏多种内固定接骨板的生物力学对比研究,在内固定接骨板的选用上仍存在争议。目的:通过有限元分析法比较不同内固定接骨板在桡骨远端C1型骨折治疗中的生物力学特性。方法:使用一名健康女性志愿者的桡骨模型,顺序导入Mimics 21.0、Geomagic Wrap 2017、Solid Works 2021等软件进行处理,制作桡骨远端C1型骨折模型。根据厂家提供的接骨板数据,分别建立桡骨远端掌侧斜T形锁定板、桡骨远端掌侧蝶形锁定板、桡骨远端掌侧万向锁定板和螺钉的三维模型,并且和骨折模型进行装配,在ANSYS 19.0中赋予材料属性,设定各接触面相互作用关系并定义载荷及边界条件,模拟其腕关节压缩、背弯、掌屈和扭转等4种载荷工况,比较其生物力学性能。结果与结论:①3组内固定模型在4种载荷工况下,内固定模型整体位移主要集中在桡骨远端关节面上;模型在背弯、掌屈和扭转载荷工况下的最大位移是轴向载荷下位移的2-6倍,表明轴向载荷工况下内固定系统最稳定;②内固定上的应力远大于骨折块上的应力,内固定物应力主要集中于接骨板在骨折断端附近区域,其中万向锁定板和蝶形锁定板应力分布较为均匀,斜T形锁定板应力集中现象最为明显;③在压缩和扭转载荷下,骨折块的应力主要集中在螺钉孔周围,掌屈和背伸载荷下则是从桡骨远端向近端逐步扩展;在同样的载荷工况下,斜T形锁定板固定状态下骨折块应力最大,万向锁定板固定系统骨折块所受应力峰值最低,蝶形锁定板与万向锁定板固定状态下的骨折块峰值应力仅仅相差0.2-6.0 MPa;④相比于斜T形锁定板和蝶形锁定板,万向锁定板在桡骨远端C1型骨折内固定中应力分布更均匀,固定模型关节面位移更小、稳定性更佳。