The use of a proximal femoral nail as a hip prosthesis: A biomechanical analysis of a newly designed implant

Konya, Mehmet Nuri; Korkusuz, Feza; Maralcan, Gökhan; Demir, Teyfik; Aslan, Ahmet

doi:10.1177/0954411917751561

Cited by 7 publications

(5 citation statements)

References 19 publications

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“…This study aimed to determine the effect of load distribution on the stem using the finite element analysis under laboratory conditions. According to the test results and the finite element analysis, the new implant was found to be safe; however, in the biomechanical test, it failed under 2000 and 2300 N loads 22 . Sensoz et al studied the risk of an iatrogenic subtrochanteric fracture after treating femoral neck fractures with cannulated screws.…”

Section: Introductionmentioning

confidence: 99%

A comparative mechanical study of two types of femur bone implant using the finite element method

Hamidi

Khosravifard

Hematiyan

et al. 2021

Numer Methods Biomed Eng

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The femoral bone fracture is one of the most common fractures that orthopedic surgeons deal with. These fractures are associated with a significant percentage of death due to non‐orthopedic complications. For this reason, it is necessary that the surgeon be well‐aware of the condition of the patient and also of the biomechanical conditions of the bone and implant before surgery, in order to use the best surgical technique. Nowadays, the use of implants is a popular technique among the available methods for the treatment of femoral fractures. In the present study, two patients with different ages, three types of femoral bone fractures, that is, oblique, reverse oblique, and neck fracture, and two types of implants, namely, the dynamic hip screw (DHS) and the Gamma nail have been investigated. The behavior of the implants has been investigated at the two stages of treatment, that is, before and after bone union. The analysis of implants was based on the amount of stress and displacement induced in different parts of the bone and the implant. From the viewpoint of the stresses induced in the bone, all models are quite similar and in terms of the implant stresses, the Gamma nail is more reliable than the DHS. Additionally, the relative displacement of the fractured bone segments at the fracture planes was calculated. According to the obtained results, it can be concluded that the relative displacement of the fracture planes with the use of Gamma nail is somewhat less than the DHS, but this difference is not significant.

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Section: Introductionmentioning

confidence: 99%

A comparative mechanical study of two types of femur bone implant using the finite element method

Hamidi

Khosravifard

Hematiyan

et al. 2021

Numer Methods Biomed Eng

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“…12 Therefore, the optimal treatment for AO/OTA 31-A2 fractures is not clear. 13 The INTERTAN nail (Smith & Nephew GmbH, London, UK) was introduced to treat trochanteric fractures. 14 It possesses two proximal screws for insertion into the head-neck fragment, thus allowing linear intraoperative compression.…”

Section: Introductionmentioning

confidence: 99%

Benefit of lag screw placement by a single- or two-screw nailing system in elderly patients with AO/OTA 31-A2 trochanteric fractures

Zhao

Guo²,

Wang

et al. 2021

J Int Med Res

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Objective To retrospectively analyze the clinical outcomes of two intramedullary fixation devices, the INTERTAN nail and Gamma3 nail, for treatment of AO/OTA 31-A2 trochanteric fractures in elderly patients. Methods In total, 165 elderly patients underwent treatment for AO/OTA 31-A2 trochanteric fractures in our hospital from June 2017 to June 2018 (INTERTAN group, n = 79; Gamma3 group, n = 86). All patients underwent radiological and clinical investigations and were followed up for an average of 12 months. Age, sex, fracture type, surgical time, intraoperative blood loss, fracture healing time, and complications were compared between the two groups. Results The surgical time was significantly shorter and the intraoperative blood loss volume was significantly lower in the Gamma3 than INTERTAN group (58.2 ± 2.5 vs. 81.7 ± 14.2 minutes and 170 ± 29 vs. 220 ± 16 mL, respectively). However, there were no significant differences in the reduction quality, hospital stay, fracture healing time, Harris hip score, postoperative complications, or 1-year postoperative mortality. Conclusion Both INTERTAN and Gamma3 nails may be effective for surgical treatment of AO/OTA 31-A2 trochanteric fractures in elderly patients. However, the Gamma3 nail was superior to the INTERTAN nail in terms of surgical time and intraoperative blood loss.

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“…6 There is also a study conducting the biomechanical analysis of new implant design that can be employed on the fixation of FNF. 7 Considering the recent biomechanical studies about FNF fixation methods, there is a search for different methods as an alternative to the golden standard cannulated screws (CSs) or a combined fixation of three CSs. 8,9 Currently, screws that are placed in parallel to the neck axis and dynamic hip screws (DHSs) are the most common internal fixation methods.…”

Section: Introductionmentioning

confidence: 99%

Perforated H-beam implant can be used in femoral neck fracture

Jafarov

Elibol

Alizadeh³

et al. 2019

Proc Inst Mech Eng H

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This biomechanical study evaluated comparison osteosynthesis of the femoral neck fracture model by 3 cannulated screw implants and new perforated H beam implants under different loading conditions with 45 third generation right proximal femur bones. A standardized Pauwels Type 3 of the femoral neck fracture was performed in the femur models. For assessing the rigidity and strength of fixation methods, the proximal femur bones after their osteosynthesis were then mechanically tested in axial compression, and torsional and dynamic axial compression loading. To determine the structural advantage of the new implant system, perforated and nonperforated new implant systems were comparing about pull out performance. When loading the samples, photographs were taken continuously. The reference parameters were described and measured from unloaded and loaded photographs of the static and dynamic tests. There was no significant difference between stiffness values of two fixation methods under static and rotational loading. Under dynamic loading, the displacement of the superior point of femoral head at the fracture line showed a significant decrease between the new implant system and cannulated screws. Comparing the relative motion at the mid line of the fracture in femoral neck between groups, a significant increase was found in H Beam implant group. Perforated H beam implants have similar static and torsion properties with golden standard. Although there was significant difference under dynamic loading which simulate movement early after surgery, the patient was not allowed to move early after surgery in the clinical practice. Therefore, the differences due to the perforated ''H'' beam implant would not cause clinical insecurity. Therefore, it is assumed that the perforated ''H'' beam implant can be used for internal fixation as an alternative to cannulated screws in the treatment of instable femoral neck fracture.

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The use of a proximal femoral nail as a hip prosthesis: A biomechanical analysis of a newly designed implant

Cited by 7 publications

References 19 publications

A comparative mechanical study of two types of femur bone implant using the finite element method

A comparative mechanical study of two types of femur bone implant using the finite element method

Benefit of lag screw placement by a single- or two-screw nailing system in elderly patients with AO/OTA 31-A2 trochanteric fractures

Perforated H-beam implant can be used in femoral neck fracture

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