total hip replacements
Tribocorrosion of hard-on-hard total hip replacements with metal and ceramic counterfaces under standard and adverse loading conditions
... (MoC) Total Hip Replacements were articulated to 1 million cycles under both Standard Gait and Microseparation ...The hip simulator was fully instrumented with a three-electrode ...
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The Effect of Microseparation on Corrosion Rates of Metal-on-Metal Total Hip Replacements
... alloy Total Hip Replacements were tested to 1 Mcycles under standard gait and severe microseparation conditions in an electrochemically instrumented hip ...
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Revision and complication rates in 654 Exeter total hip replacements, with a maximum follow up of 20 years
... Total hip replacements (THR) were introduced in Iceland in 1967 and operations begun at FSA Central Hospital Akureyri in 1982 when the orthopedic department ...
5
Material Loss at the Taper Junction of Retrieved Large Head Metal on Metal Total Hip Replacements
... As with all work on retrievals, there are several limitations. We were able to analyze only 36 male tapers, as in the majority of cases the revising surgeon did not remove a well-fixed femoral stem. Also, we did not ...
9
Failure analysis of cemented metal-on-metal total hip replacements from a single centre cohort
... This paper presents the failure analysis of cemented metal on metal (MoM) total hip replacements (THR) from a single centre cohort. Between 1997 and 2008, 652 Ultima TPS™ femoral stems with the ...
13
Wear of 36-mm BIOLOX(R) delta ceramic-on-ceramic bearing in total hip replacements under edge loading conditions.
... primary total hip replacements with CoC bearings implanted between 1997 and 2008, that high acetabular cup angle, high femoral offset, lateralisation of the hip centre and either high or low ...
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Review of Tapered Femoral Stem Fixation in Cemented Total Hip Replacements
... and hip abduction ...bilateral total hip replacements were initially ambulated full weight-bearing with a walker and gradually progressed to crutch ...
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Comparison of primary total hip replacements performed with a direct anterior approach versus the standard lateral approach: perioperative findings
... Statistical analysis was done with the aid of the SPSS software package (SPSS, Chicago, IL, USA), applying the independent samples t-test for normal variable parameters (age, weight, crystalloids, Hb values, length of ...
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Ten year trends in medical complications following 540,623 primary total hip replacements from a national database
... Total joint replacement in the English NHS has a very low risk of mortality and postoperative complications: 3% of pro- cedures being followed by a medical complication. Despite a population with progressively ...
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The investigation into modes of failure of total hip replacements
... When standing on one leg, the centre of gravity moves away from the supporting leg since the non-supporting leg is now calculated as part of the body mass acting upon the hip bearing all of the weight. Due to the ...
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The effect of cup outer sizes on the contact mechanics and cement fixation of cemented total hip replacements
... 8 The predicted peak stresses of the cement mantle as a function of penetration depths with 448 different cup inclination angles and cup outer diameters: a peak von Mises stress, b peak [r] ...
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Analysis of Functional and Radiological Outcome of Total Hip Replacements in Rheumatoid and Osteoarthritis Patients*
... Conclusion: The results in patients who underwent total hip replacement for osteoarthritis are better than those for rheumatoid arthritis, however the gain in harris hip score is the sam[r] ...
5
Sealing the bone-implant interface around total hip replacements using guided bone regeneration.
... Maxillofacial and periodontal experience demonstrates that membrane placement, with the exclusion of fibrous ingrowth, enhances osteogenesis. This will form the basis for the secondary biological seal. Hence this ...
234
Effect of femoral head size on the wear of metal on metal bearings in total hip replacements under adverse edge loading conditions
... Metal-on-metal bearings have shown low wear rates under standard hip simulator conditions, however, retrieval studies have shown large variations in wear rates and mechanisms. High wear in vivo has caused ...
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Original Article Neoadjuvant chemotherapy, wide resection and custom prosthetic replacement for tumors of the proximal femur
... Abstract: Endoprosthetic reconstruction after bone tumor resection is accepted treatment for femoral tumors. The objective of this study is to evaluate the effectiveness and functional outcomes of custom prosthetic ...
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Predictive wear modeling of the articulating metal-on-metal hip replacements
... artificial hip joints operate adds complexity to the prediction of wear, as the joint operates in both the full fluid film regime — specifically the elastohydrodynamic lubrication (EHL) regime—and the mixed or ...
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The projected burden of primary total knee and hip replacement for osteoarthritis in Australia to the year 2030
... Much of the predicted growth in TKR and THR is driven by population ageing. From 2003 to 2013, the Australian population aged 40 years and over increased from 8.7 million (representing 51% of the total popula- ...
10
Early Results of Total Knee Replacements: "A Clinical and Radiological Evaluation"
... Early Results of Total Knee Replacements "A Clinical and Radiological Evaluation" Early Results of Total Knee Replacements "A Clinical and Radiological Evaluation" K S Dhillon, FRCS* Jamal, MS* S Bhup[.] ...
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Optimisation of the bearing surface design of total knee replacements
... together, only applies to cases where the bodies are non-conforming and the contact area is small compared with the radii. It also assumes a planar contact area. Finally, stresses calculated using this theory only apply ...
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Investigation in failure analysis and materials selection in total hip replacement prosthesis
... of hip dislocation (BoneSmart n.d.). The metal-on-metal (MoM) hip bearings produce wear debris in one form or combination of the four basic wear mechanisms of adhesion, abrasion, corrosion and surface ...
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