The strength of bone-metal block for different types of implants surfaces under the conditions of normal bone and osteoporosis in rats
Journal Title: Orthopaedics, Traumatology and Prosthetics - Year 2016, Vol 602, Issue 1
Abstract
Fixing the acetabular component of prosthesis in the conditions of osteoporosis and changes in acetabulum anatomy is an actual problem of modern orthopedics. The goal: to perform a comparative analysis of the strength of bone-metal block for the different type of implant surfaces in the conditions ofnormal bone and in the simulation of osteoporosis in rats. The methods: experimental studies of femur strength were carried in 60 laboratory animals (rats). The animals were divided into two groups of 30 animals each: I — relatively healthy, II — osteoporosis induced by ovariectomy. 6 subgroups were formed in each group of animals. Implants of such differentmaterials as porous titanium, tantalum porous Trabecular Metal (Zimmer), titanium coated with Gription (DePuy), Stiktite (Smith & Nephew), Trabecular Titanium (Lima), Tritanum (Stryker) were used to fill a hole-like defect in distal metaphysis of femur. The animals were taken out of experiment 14 days after implantation and biomechanical investigation was performed to assess the strength of operated and contralateral femurs. Longitudinal axial load using a metal rod was applied to femoral head. Load value gradually increased to complete destruction of anatomical specimen and measured. The results: femurs with implants from porous tantalum Trabecular Metal and Stiktitewith stood the maximum load in the conditions of normal bone density. Specimen of femurs with implanted porous titanium (the most weak) and tantalum Trabecular Metal (the most solid) composed separate subsets in the conditions of simulated osteoporosis. The conclusions: the comparative analysis of biomechanical investigation revealed that bone with implants from porous tantalum withstands the maximum breaking load in the conditions of normal and osteoporotic bone.
Authors and Affiliations
Volodymyr Filipenko, Mykhaylo Karpinsky, Olena Karpinska, Mandus Akonjom, Stanislav Bondarenko
Keywords
Related Articles
- EP ID EP204426
- DOI 10.15674/0030-59872016172-77
- Views 318
- Downloads 0
[Эндопротезирование головки лучевой кости биполярным бесцементным эндопротезом с парой трения металл – металл]
Objective: to review technical peculiarities of designed uncemented modular radial head endoprothesis and to analyze it clinical application in patients with fractures and dislocations of the radial head ІІІ–IV types by...
PERIOPERATIVE MULTIMODAL ANALGESIA IN ORTHOPEDIC AND TRAUMA PATIENTS FOR MINIMAL INVASIVE SURGICAL INTERVENTION
The goal: to evaluate the effectiveness of the proposed method of perioperative multimodal analgesia with complex use of non-opioid analgesics only of central and peripheral actions during minimally invasive surgical pro...
The results of clinical application of the spring-loaded fixator in osteosynthesis of the medial fractures of femoral neck
The share of femoral neck fractures in the structure of injuries enlarges every year due to increasing number of elderly people. Known techniques of osteosynthesis do not provide satisfactory results of treatment in the...
Stress-strain state of fibrin-blood clot and periosteum in the area of diaphyseal fracture under different conditions of fracture fragments fixation and its impact on the structural organization of regenerate
The goal: using mathematical finite-element modeling to calculate the stress-strain state (SSS) of fibrin-blood clot and periosteum around the fracture zone in the conditions of fixation of femur fragments with on-bone p...
The morphological changes in the spinal motor segments of the lumbar spine after rigid spinal stabilization with implants.
Rigid implants for spinal fusion are widely used in the clinical practice. However, there are only a few studies that have examined at the tissue level reorganization of structures of the spinal unit in a fusion. Object...