scholarly journals Supplementary medial locking plate fixation of Ludloff osteotomy versus sole lag screw fixation: A biomechanical evaluation

2017 ◽  
Vol 47 ◽  
pp. 66-72
Author(s):  
Panagiotis E. Chatzistergos ◽  
George C. Karaoglanis ◽  
Stavros K. Kourkoulis ◽  
Minos Tyllianakis ◽  
Emmanouil D. Stamatis
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Plate Fixation ◽  
Locking Plate Fixation ◽  
Lag Screw ◽  
Biomechanical Evaluation

scholarly journals Biomechanical Evaluation of Tarsometatarsal Fusion Comparing Crossing Lag Screws and Lag Screw With Locking Plate

2021 ◽  
pp. 107110072110335
Author(s):  
Sarah Ettinger ◽  
Lisa-Christin Hemmersbach ◽  
Michael Schwarze ◽  
Christina Stukenborg-Colsman ◽  
Daiwei Yao ◽  
...  
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Operative Procedure ◽  
Fixation Technique ◽  
Lag Screw ◽  
Group 15 ◽  
Fresh Frozen ◽  
Biomechanical Evaluation ◽  
The Stability ◽  
End Stage

Background: Tarsometatarsal (TMT) arthrodesis is a common operative procedure for end-stage arthritis of the TMT joints. To date, there is no consensus on the best fixation technique for TMT arthrodesis and which joints should be included. Methods: Thirty fresh-frozen feet were divided into one group (15 feet) in which TMT joints I-III were fused with a lag screw and locking plate and a second group (15 feet) in which TMT joints I-III were fused with 2 crossing lag screws. The arthrodesis was performed stepwise with evaluation of mobility between the metatarsal and cuneiform bones after every application or removal of a lag screw or locking plate. Results: Isolated lag-screw arthrodesis of the TMT I-III joints led to significantly increased stability in every joint ( P < .05). Additional application of a locking plate caused further stability in every TMT joint ( P < .05). An additional crossed lag screw did not significantly increase rigidity of the TMT II and III joints ( P > .05). An IM screw did not influence the stability of the fused TMT joints. For TMT III arthrodesis, lag-screw and locking plate constructs were superior to crossed lag-screw fixation ( P < .05). TMT I fusion does not support stability after TMT II and III arthrodesis. Conclusion: Each fixation technique provided sufficient stabilization of the TMT joints. Use of a lag screw plus locking plate might be superior to crossed screw fixation. An additional TMT I and/or III arthrodesis did not increase stability of an isolated TMT II arthrodesis. Clinical Relevance: We report the first biomechanical evaluation of TMT I-III arthrodesis. Our results may help surgeons to choose among osteosynthesis techniques and which joints to include in performing arthrodesis of TMT I-III joints.

scholarly journals The comparison of Nice knots and traditional methods as an auxiliary reduction-fixation technique in pre-contoured locking plate fixation for comminuted Robinson type 2B clavicle fracture: a retrospective study

2020 ◽  
Author(s):  
Shengkun Hong ◽  
Wei Wang ◽  
Jinku Guo ◽  
Feixiong He ◽  
Cong Wang
Keyword(s):  
Locking Plate ◽  
Plate Fixation ◽  
Clavicle Fracture ◽  
Operation Time ◽  
Locking Plate Fixation ◽  
Traditional Methods ◽  
Traditional Group ◽  
Lag Screw ◽  
Clavicle Fractures

Abstract Background: Open reduction and pre-contoured locking plate fixation is a popular treatment option for displaced midshaft clavicle fracture. Lag screw and cerclage are two main intraoperative techniques to reduce and fix fragments. However, both lag screw and metallic cerclage have disadvantages. The doubled-suture Nice knot has been reported in many areas of orthopedic surgery for its effectiveness. This study aims to compare the outcomes of comminuted mid-shaft clavicle fractures reduced by Nice knots versus traditional techniques (lag screw or/and metallic cerclage) when bridged with pre-contoured locking plates.Methods: We retrospectively reviewed 101 patients (65 females and 36 males) diagnosed with midshaft clavicle fractures with at least one wedge fragment reduced by either Nice knots or traditional methods and bridged with pre-contoured locking plates between December 2016 and April 2019. Operation time, functional outcomes, pain, patient satisfaction, fracture healing and complications were assessed at a follow-up of 12 to 40 months.Results: The mean age of all the patients was 50.8 years. There were 52 and 49 patients in Nice knot group and traditional group respectively, and no differences between two groups was found in general patient characteristics, fracture type, follow up and injury-to-surgery duration. The Nice knot group had significant less operation time (p < 0.01) than the traditional group (mean and standard deviation [SD], 78.6±19.0 compared with 94.4±29.9 minutes, respectively). For healing time, functional score, pain, satisfaction and complications, there was no significant differences between groups, despite the Nice knot group had slightly better results.Conclusions: Both Nice knots and traditional methods treated for comminuted Robinson type 2B clavicle fractures were effective and safe. And the Nice knots seemed to be superior with significant less operation time.

Biomechanical evaluation of periprosthetic refractures following distal femur locking plate fixation

Injury ◽  
2015 ◽  
Vol 46 (12) ◽  
pp. 2368-2373 ◽  
Author(s):  
Jamie Alexander ◽  
Randal P. Morris ◽  
David Kaimrajh ◽  
Edward Milne ◽  
Loren Latta ◽  
...  
Keyword(s):  
Distal Femur ◽  
Locking Plate ◽  
Plate Fixation ◽  
Locking Plate Fixation ◽  
Biomechanical Evaluation

scholarly journals Assessment of the Efficacy of the Far Cortical Locking Technique in Proximal Humeral Fractures: A Comparison with the Conventional Bi-cortical Locking Technique 

2020 ◽  
Author(s):  
joongbae seo ◽  
Yoenjun Kim ◽  
Kyubeom Kim ◽  
Jae-Sung Yoo
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Callus Formation ◽  
Constant Score ◽  
Plate Fixation ◽  
Treatment Strategies ◽  
Proximal Humeral Fractures ◽  
Humeral Fractures ◽  
Union Rate ◽  
Locking Plate Fixation

Abstract Background Locking plate fixation is one of the treatment strategies for the management of proximal humeral fractures. However, stiffness after locking plate fixation is a clinical concern. The mechanical stiffness of the standard locking plate system may suppress the interfragmentary motion necessary to promote secondary bone healing by callus formation. The far cortical locking (FCL) technique was developed to address this limitation in 2005. FCL increases construct flexibility and promotes callus formation. Our study aimed to evaluate the clinical and radiological outcomes of the FCL technique when implemented in proximal humeral fracture management. Furthermore, we compared the surgical outcomes of FCL with those of the conventional bicortical locking (BCL) screw fixation technique.Methods Forty-five consecutive patients who had undergone locking fixation for proximal humeral fractures were included in this study. A proximal humeral locking plate (PHILOS) system with BCL screw fixation was used in the first 27 cases, and the periarticular proximal humeral locking plate with FCL screw fixation was used in the final 18 consecutive cases. Functional capacity was assessed using the constant score, American Shoulder and Elbow Surgeons (ASES) score, and range of motion. Radiographic outcomes were evaluated using the Paavolainen method of measuring the neck-shaft angle (NSA).Results No significant differences in clinical outcomes (ASES score, constant score, and range of motion)were found between the two groups. The union rate at 12 weeks was significantly higher in the FCL group (94.4%) than in the BCL group (66.7%, p=0.006). No significant differences in NSA were found between the two treatment strategies. The complication rate was not significantly different between the two groups.Conclusions When implemented in proximal humeral fractures, the FCL technique showed satisfactory clinical and radiological outcomes as compared with the conventional BCL technique. The bone union rate at 12 weeks after surgery was significantly higher in the FCL group than in the BCL group. However, no significant difference in the final bone union rate was found between the two groups.

Mechanical Comparison of Headless Screw Fixation and Locking Plate Fixation for Talar Neck Fractures

2015 ◽  
Vol 54 (5) ◽  
pp. 905-909 ◽  
Author(s):  
Ahmet Karakasli ◽  
Onur Hapa ◽  
Mehmet Erduran ◽  
Cemal Dincer ◽  
Berivan Cecen ◽  
...  
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Plate Fixation ◽  
Locking Plate Fixation ◽  
Talar Neck Fractures

scholarly journals Assessment of the Efficacy of the Far Cortical Locking Technique in Proximal Humeral Fractures: A Comparison with the Conventional Bi-cortical Locking Technique 

2020 ◽  
Author(s):  
joongbae seo ◽  
Yoenjun Kim ◽  
Kyubeom Kim ◽  
Jae-Sung Yoo
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Callus Formation ◽  
Constant Score ◽  
Plate Fixation ◽  
Treatment Strategies ◽  
Proximal Humeral Fractures ◽  
Humeral Fractures ◽  
Union Rate ◽  
Locking Plate Fixation

Abstract Background Locking plate fixation is one of the treatment strategies for the management of proximal humeral fractures. However, stiffness after locking plate fixation is a clinical concern. The mechanical stiffness of the standard locking plate system may suppress the interfragmentary motion necessary to promote secondary bone healing by callus formation. The far cortical locking (FCL) technique was developed to address this limitation in 2005. FCL increases construct flexibility and promotes callus formation. Our study aimed to evaluate the clinical and radiological outcomes of the FCL technique when implemented in proximal humeral fracture management. Furthermore, we compared the surgical outcomes of FCL with those of the conventional bicortical locking (BCL) screw fixation technique.Methods Forty-five consecutive patients who had undergone locking fixation for proximal humeral fractures were included in this study. A proximal humeral locking plate (PHILOS) system with BCL screw fixation was used in the first 27 cases, and the periarticular proximal humeral locking plate with FCL screw fixation was used in the final 18 consecutive cases. Functional capacity was assessed using the constant score, American Shoulder and Elbow Surgeons (ASES) score, and range of motion. Radiographic outcomes were evaluated using the Paavolainen method of measuring the neck-shaft angle (NSA).Results No significant differences in clinical outcomes (ASES score, constant score, and range of motion)were found between the two groups. The union rate at 12 weeks was significantly higher in the FCL group (94.4%) than in the BCL group (66.7%, p=0.006). No significant differences in NSA were found between the two treatment strategies. The complication rate was not significantly different between the two groups.Conclusions When implemented in proximal humeral fractures, the FCL technique showed satisfactory clinical and radiological outcomes as compared with the conventional BCL technique. The bone union rate at 12 weeks after surgery was significantly higher in the FCL group than in the BCL group. However, no significant difference in the final bone union rate was found between the two groups.Level of evidence: Level III-2, Retrospective study

scholarly journals Assessment of the Efficacy of the Far Cortical Locking Technique for Proximal Humeral Fractures: A Comparison with the Conventional Bicortical Locking Technique

2020 ◽  
Author(s):  
Joong-bae Seo ◽  
Sunghyun Yoon ◽  
Hyung-Seok Yi ◽  
Jun-Kyom Kim ◽  
Kyu-Beom Kim ◽  
...  
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Callus Formation ◽  
Constant Score ◽  
Plate Fixation ◽  
Treatment Strategies ◽  
Proximal Humeral Fractures ◽  
Humeral Fractures ◽  
Union Rate ◽  
Locking Plate Fixation

Abstract Background Locking plate fixation is one of the treatment strategies for the management of proximal humeral fractures. However, stiffness after locking plate fixation is a clinical concern. The mechanical stiffness of the standard locking plate system may suppress the interfragmentary motion necessary to promote secondary bone healing by callus formation. The far cortical locking (FCL) technique was developed to address this limitation in 2005. FCL allows axial motion and promotes uniform callus formation. Our study aimed to evaluate the clinical and radiological outcomes of the FCL technique when implemented in proximal humeral fracture management. Furthermore, we compared the surgical outcomes of FCL with those of the conventional bicortical locking (BCL) screw fixation technique. Methods Forty-five consecutive patients who had undergone locking fixation for proximal humeral fractures were included in this study. A proximal humeral locking plate (PHILOS) system with BCL screw fixation was used in the first 27 cases, and the periarticular proximal humeral locking plate with FCL screw fixation was used in the final 18 consecutive cases. Functional capacity was assessed using the constant score, American Shoulder and Elbow Surgeons (ASES) score, and range of motion. Radiographic outcomes were evaluated using the Paavolainen method of measuring the neck-shaft angle (NSA). Results No significant differences in clinical outcomes (ASES score, constant score, and range of motion) were found between the two groups. The union rate at 12 weeks was significantly higher in the FCL group (94.4%) than in the BCL group (66.7%, p = 0.006). No significant differences in NSA were found between the two treatment strategies. The complication rate was not significantly different between the two groups. Conclusions When implemented in proximal humeral fractures, the FCL technique showed satisfactory clinical and radiological outcomes as compared with the conventional BCL technique. The bone union rate at 12 weeks after surgery was significantly higher in the FCL group than in the BCL group. However, no significant difference in the final bone union rate was found between the two groups.

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