Stress-strain state of proximal femur after joint arthoroplasty with neck defect conditions at the minor trochanter level with different stem types
Journal Title: Orthopaedics, Traumatology and Prosthetics - Year 2017, Vol 606, Issue 1
Abstract
In the primary hip arthroplasty, the metaphyseal fixation type stems have proved to be very useful, allowing the stability of the fixation and the diaphyseal section of the femur to remain stable for future revision surgeries. However, with the increase in the defect of bone tissue as a result of trauma, it becomes necessary to use the stems of a second type of fixation. Purpose: to investigate the stress-strain distribution of the proximal femur in conditions of arthroplasty with stems of various types of fixation in case of defect of the femoral neck at the level of a minor trochanter. Methods: using the finite element method, the pelvic and hip joints were modeled in various phases of walking. The model included the endoprosthesis «Zimmer» installed in the left hip joint in two versions — with metaphyseal and diaphyseal stems fixation types. Results: stress-strain distribution of the proximal femur in conditions of endoprosthetics with a femoral neck defect at the level of a minor trochanter was different for variants of the model with diaphyseal and metaphyseal stem fixation in all phases of the movement. The stress-strain data for the version of the model with the metaphysical fixation stem almost always exceeded the values obtained with the diaphysial type of fixation. The greatest difference was found for the first and third phases of movement in the upper third of the medial surface of the femur at the site of contact with the endoprosthesis. Conclusions: in the case of a femoral neck defect at the level of a minor trochanter in conditions of endoprosthetics, it is necessary to give preference to the use of an endoprosthesis with a diaphysial fixation stem.
Authors and Affiliations
Volodymyr Filipenko, Stanislav Bondarenko, Anatoliy Zhygun, Oleksandr Yaresko
Keywords
Related Articles
- EP ID EP336543
- DOI 10.15674/0030-59872017134-38
- Views 206
- Downloads 0
The results of conservative treatment and short transpedicular fixation at burst fractures of thoracic and lumbar spine
Multifragmentary (burst) fracture can happen in case of spine trauma under the influence of high-energy axial compression with penetration of bone fragments into spine canal and paravertebral tissues. Objective: to anal...
MORPHOLOGICAL FEATURES STATE OF THE BLOOD SUPPLY AND TISSUE VIABILITY IN FEMORAL AND TIBIAL BONES DURING TOURNIQUET LIMB ISCHEMIA AND RECIRCULATION PERIOD
Detailed studies of histopathological changes and the state of blood supply to the tissues of the limb has not been studied yet. Application with following removing the tourniquet had not been carried out. It remains unc...
BONE FRAGMENTS DISPLACEMENT IN THE TREATMENT OF DIAPHYSEAL FRACTURES AND THEIR IMPORTANCE TO THE PROCESS OF BONE REGENERATION
Methods of fixation are used for the treatment of diaphyseal fractures, which produce structure «fragments – fixation device» with various mechanical properties and the displacement range of fragments. Purpose: to justi...
Influence of pain relief management on early patents rehabilitation after total hip replacement [Вплив методів знеболювання на ранню реабілітацію пацієнтів після ендопротезування кульшового суглоба]
Adequate pain relief after total hip replacement can promote to decrease chronic pain, to improve muscles function and to increase joints movements. Objective: to compare different methods of pain management with scores...
The dynamics of blood indexes in rats after ceramic biomaterial implantation in defects of the femur methaphis and diaphysis [Динаміка показників крові щурів після імплантації керамічного біоматеріалу в дефекти метафіза та діафіза стегнової кістки]
Objective: on the base of blood markers dynamics we determined the influence of ceramic material on the rats’ organism and bone regeneration after implantation in the femur methaphis and diaphysis. Methods: study was mad...