Mechanical Properties of Al2O3-TiO2-SiC Nanocomposites for the Femoral Head of Hip Joint Replacement

Microstructure and mechanical properties of Al2O3-TiO2-SiC nanocomposites were studied. To improve the mechanical and tribological properties of alumina, nano-sized TiO2 and SiC powders were dispersed. Spark Plasma Sintering (SPS) technique, at 1400°C, 50 MPa for 5 minutes, was applied for the densification of Al2O3-TiO2-SiC nanocomposites. Characterization of Al2O3- TiO2-SiC nanocomposites was carried out using Scanning Electron Microscopy (SEM), Transmission Electron Microscope (TEM), X-ray diffractometer and EDX. Fracture toughness and Vickers hardness were estimated by indentation technique. These experimental results on mechanical properties of Al2O3-TiO2-SiC nanocomposites indicated that they can be a potential material with high hardness and high fracture toughness to be used as femoral head in total hip joint replacement.

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Risk forecasting of the femoral head dislocation and its prophylaxis at total hip joint replacement

ORTHOPAEDICS TRAUMATOLOGY and PROSTHETICS ◽

10.15674/0030-59872018179-85 ◽

2018 ◽

Vol 0 (1) ◽

pp. 79-85

Author(s):

Volodymyr Filipenko ◽

Vera Kolesnichenko ◽

Volodymyr Mezentsev ◽

Oleh Ovchynnikov

Keyword(s):

Femoral Head ◽

Hip Joint ◽

Joint Replacement ◽

Hip Joint Replacement ◽

Total Hip ◽

Risk Forecasting

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The effect of femoral head size on edge loading in metal‐on‐metal hip joint replacement under dynamic separation conditions

Journal of Biomedical Materials Research Part B Applied Biomaterials ◽

10.1002/jbm.b.34531 ◽

2019 ◽

Vol 108 (5) ◽

pp. 1897-1906

Author(s):

Feng Liu ◽

Chao Lian ◽

Li Feng ◽

Junyuan Wang ◽

Wenhua Du

Keyword(s):

Femoral Head ◽

Hip Joint ◽

Joint Replacement ◽

Head Size ◽

Femoral Head Size ◽

Hip Joint Replacement ◽

Metal On Metal ◽

Edge Loading ◽

Separation Conditions

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Intertrochanteric Corrective Osteotomy as a Joint-Saving Surgical Treatment for Femoral Head Necrosis

Hip International ◽

10.1177/1120700094004003-401 ◽

1994 ◽

Vol 4 (3-4) ◽

pp. 101-114

Author(s):

B.J. Berendsen ◽

C.J. Wirth ◽

H.V.D. Boom

Keyword(s):

Femoral Head ◽

Hip Joint ◽

Joint Replacement ◽

Clinical Symptoms ◽

Early Stage ◽

Corrective Osteotomy ◽

Femoral Head Necrosis ◽

Hip Joint Replacement ◽

Total Hip

Forty-seven intertrochanteric osteotomies were performed in 9 years on 40 patients with femoral head necrosis in Arlet and Ficat stages II and III in the Orthopaedic Department of the Medical School, Hannover. With an average follow up of 5.9 years (minimum 2.3 years, maximum 9.3 years), the study shows only 46% of the patients with satisfactory, good and very good results. After the joint saving operation, 26% of treated patients with pre-operative employment went into premature retirement. The average postoperative non-working period was 11 months (7-18 months). Clinical Relevance The results after the joint-saving operation were better when the operation was performed at an early stage of the disease with only a small area of necrosis. Although the operation will not prevent a progression of necrosis and a secondary arthrosis, we recommend that the joint-saving operation be performed during stages I and II to prolong the period before a total hip joint replacement becomes necessary. During stage III a total hip joint replacement may be preferable depending on clinical symptoms, patient age and the radiological findings (necrosis angle > 180°).

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Wear of UHMWPE against Zirconia/Alumina Composite

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.288-289.625 ◽

2005 ◽

Vol 288-289 ◽

pp. 625-628 ◽

Cited By ~ 3

Author(s):

Kwon Yong Lee ◽

Hwan Kim ◽

Dae Joon Kim ◽

Myung Hyun Lee ◽

Won Seon Seo

Keyword(s):

Weight Loss ◽

Femoral Head ◽

Low Temperature ◽

Hip Joint ◽

Joint Replacement ◽

The Novel ◽

Hip Joint Replacement ◽

Total Hip ◽

Alumina Composite ◽

Sliding Test

The sliding wear behavior of ultra high molecular weight polyethylene (UHMWPE) was examined on a novel low temperature degradation-free zirconia/alumina composite material and on the conventional ceramics (alumina and zirconia) used for a femoral head in total hip joint replacement. The wear of UHMWPE pins against these ceramic disks was evaluated by performing linear reciprocal sliding and repeat pass rotational sliding tests for one million cycles in a bovine serum. The weight loss of polyethylene against the novel low temperature degradation-free zirconia/alumina composite disks was much less than conventional ceramics for all tests. The mean weight loss of the polyethylene pins was more in the linear reciprocal sliding test than in the repeat pass rotational sliding test for all kinds of disk materials. Neither the coherent transfer film nor the surface damage was observed on the surface of the novel zirconia/alumina composite disks during the test. In conclusion, the novel zirconia/alumina composite leads the least wear of polyethylene among the tested ceramics and demonstrates the potential as the alternative materials for femoral head in total hip joint replacement.

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