Finite element analysis of the stability of transverse acetabular fractures in standing and sitting positions by different fixation options

Yıldırım, Ahmet; Alemdaroğlu, Kadir Bahadır; Yüksel, Halil Yalçın; Öken, Özdamar Fuad; Uçaner, Ahmet

doi:10.1016/j.injury.2015.05.029

Cited by 26 publications

(23 citation statements)

References 23 publications

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“…These results were similar to those obtained from another experiment and FE model. 9 Yildirim et al found that column plating combined screws provided comparable results to a double column plating in transverse fractures, suggesting that two column fixations might be unnecessary. 9 …”

Section: Discussionmentioning

confidence: 99%

“… 7 Wolf et al used two column plates to treat the complex fractures and concluded that this modification could provide a helpful and easy alternative to the more demanding original exposure. 8 Yildirim et al 9 tested the five different fixation alternatives of stabilization of transverse acetabular fractures under two basic physiological loading conditions: standing and sitting utilizing a finite element (FE) model. The authors found that the posterior column plating combined with an anterior column screw has quite comparable results to a double column plating in transverse fractures, suggesting that the two column fixations might be unnecessary.…”

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confidence: 99%

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Biomechanical analysis of the fixation systems for anterior column and posterior hemi-transverse acetabular fractures

Lei¹,

Dong²,

Li³

et al. 2017

Acta Orthopaedica et Traumatologica Turcica

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ObjectiveThe aim of this study was to evaluate the biomechanical properties of common fixation systems for complex acetabular fractures.MethodsA finite element (FE) pelvic model with anterior column and posterior hemi-transverse acetabular fractures was created. Three common fixation systems were used to fix the posterior wall acetabular fractures: 1. Anterior column plate combined with posterior column screws (group I), 2. Anterior column plate combined with quadrilateral area screws (group II) and 3. Double-column plates (group III). And 600 N, representing the body weight, was loaded on the upper surface of the sacrum to simulate the double-limb stance. The amounts of total and relative displacements were compared between the groups.ResultsThe total amount of displacement was 2.76 mm in group II, 2.81 mm in group III, and 2.83 mm in group I. The amount of relative displacement was 0.0078 mm in group II, 0.0093 mm in group III and 0.014 mm in group I.ConclusionOur results suggested that all fixation systems enhance biomechanical stability significantly. Anterior column plate combined with quadrilateral area screws has quite comparable results to double column plates, they were superior to anterior column plate combined with posterior screws.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Biomechanical analysis of the fixation systems for anterior column and posterior hemi-transverse acetabular fractures

Lei¹,

Dong²,

Li³

et al. 2017

Acta Orthopaedica et Traumatologica Turcica

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“…Two cannulated screws were recommended to stabilize the anterior column fracture, and the direction of the screws should be aligned with the anterior column [22,23]. Plating osteosynthesis was also reported [24]. In our series, anterior column fractures were fixed with cannulated screws in 14 cases, of which 6 cases were fixed with only 1 screw.…”

Section: Discussionmentioning

confidence: 87%

Treatment of Transverse with or without Posterior Wall Fractures of Acetabulum Using a Modified Smith-Petersen Combined with Kocher-Langenbeck Approach

Jiang

et al. 2017

Med Sci Monit

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BackgroundThe aim of this study was to explore the surgical treatment of transverse with or without posterior wall fractures of the acetabulum.Material/MethodsWe surgically treated 21 consecutive cases of pure transverse (7 cases) and with posterior wall (14 cases) fractures of the acetabulum. The anterior column fractures were firstly reduced, temporarily fixed through a modified Smith-Petersen small incision, and finally fixed after the fixation of the posterior column and wall fractures, which were reduced and fixed through a Kocher-Langenbeck approach. The operative time, intra-operative blood loss, quality of reduction (Matta criteria), perioperative complications, osseous union, subsequent complications, and hip function evaluation were recorded.ResultsThe mean operative time was 198.1 min and the mean intra-operative blood loss was 938.1 ml. Anatomic reduction of the anterior column was obtained in 20 cases and was imperfect in 1 case. All posterior column and wall fractures were anatomically reduced. We followed up 18 cases for a mean duration of 16.3 (8–30) months. All the fractures achieved osseous union. The mean Harris score was 85.1 points, with an excellent result in 7 cases, good in 8, fair in 2, and poor in 1. According to modified Merle d’ Aubigne and Postel score system, the results were excellent in 2 cases, good in 15, and poor in 1. Avascular necrosis of the femoral head occurred in 1 case, heterotopic ossification in 3 cases, and numbness of the anterolateral thigh in 6 cases.ConclusionsFor transverse with or without posterior wall fractures of the acetabulum, reduction and fixation of anterior and posterior column should be done in sequence, and a modified Smith-Petersen small incision might be a good choice in reduction and fixation of the anterior column because it possesses advantages of direct visualization and minimal invasion.

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“…The aim of stress analysis with FEM is to investigate the weak points when a structural deformation occurs on structures under a load (8,9).…”

Section: Discussionmentioning

confidence: 99%

Tibia diafiz transvers kırığının plak-vida ile tespitinin sonlu elemanlar yöntemi ile analizi

Bayramoğlu¹,

Tomak²,

Çıraklı³

et al. 2016

Ege Tıp Dergisi

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Aim: Using the Finite Element Method, it was aimed to select the most appropriate implant for a patient with a transverse tibia diaphysis fracture and to determine the effect of sudden temperature changes on the selected implant. Materials and Methods:After separating the diaphyseal area into transverse pieces at 1 cm regular intervals, the anterior and lateral views of the cross-sections enabled the generation of a computer model of tubular bone with 3 cortices. An 8-hole plate with 8 screws was placed over the lateral cortex of the tibia on the model. After creating a transverse fracture in the exact centre of the plate, the whole model with bone-plate-screw was converted into a mathematical model (mesh). The results of the analysis were evaluated using the finite elements method. Results:The tensile values were found to be greatest on the 2 nd holes and screws from the proximal and distal of the fracture line. In the evaluation of temperature changes, the plate-screw tensile values were determined as normal in a cold environment but were seen to be high compared to those of a hot environment. Conclusion:By finding the tensile values on plate-screw-bone with this method preoperatively, the most appropriate plate-screw to be used on the patient can be determined. In addition, as tensile force on the plate-screw increased with transfer from a hot environment to a cold one, it could be said that fractures are more likely to occur in a cold environment. Keywords:Tibia fracture, bone model, biomechanics, analysis, finite element method. Öz Amaç: Sonlu Elemanlar Yöntemi ile hasta için en uygun implantın seçilebilmesi ve seçilen implant üzerinde ani ısı değişikliklerinin etkisinin saptanması amaçlanmıştır. Gereç ve Yöntem:

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Finite element analysis of the stability of transverse acetabular fractures in standing and sitting positions by different fixation options

Cited by 26 publications

References 23 publications

Biomechanical analysis of the fixation systems for anterior column and posterior hemi-transverse acetabular fractures

Biomechanical analysis of the fixation systems for anterior column and posterior hemi-transverse acetabular fractures

Treatment of Transverse with or without Posterior Wall Fractures of Acetabulum Using a Modified Smith-Petersen Combined with Kocher-Langenbeck Approach

Tibia diafiz transvers kırığının plak-vida ile tespitinin sonlu elemanlar yöntemi ile analizi

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