scholarly journals Management of a Complex Supracondylar Periprosthetic Femur Fracture with Intramedullary Strut Allograft and Bilateral Locking Plates

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Rita Moukarzel ◽  
Dany Aouad ◽  
Mohammad Daher ◽  
Wendy Ghanem ◽  
Hady Ezzeddine ◽  
...  
Keyword(s):  
Locking Plate ◽  
Femoral Fractures ◽  
Periprosthetic Femoral Fracture ◽  
Total Knee Replacements ◽  
Knee Replacements ◽  
Surgical Options ◽  
Total Knee ◽  
Fibular Strut ◽  
Fibular Strut Allograft ◽  
Insight Into

Supracondylar periprosthetic femoral fractures occurring above total knee replacements have been considered a rare entity. However, they continue to increase in frequency with the increasing number of arthroplasties and the improvement in morbidity and mortality in the concerned patient population. The management of periprosthetic distal femoral fractures is a challenging orthopedic problem. In this brief communication, a case of 49-year-old woman with rheumatoid arthritis who sustained a low distal comminuted periprosthetic femoral fracture is presented. Her fracture was eventually managed with an intramedullary fibular strut allograft and bilateral locking plate placement reaching satisfactory healing and restoration of alignment. The primary aim of this report is to provide insight into this novel technique as a successful alternative to other standard surgical options.

scholarly journals Analysis of total knee replacements in a South Indian Institute

2018 ◽  
Vol 4 (2) ◽  
pp. 187
Author(s):  
Maheshwar Lakkireddy ◽  
K. K. Kiran Kumar ◽  
Madhulatha Karra ◽  
Srikanth Palthi ◽  
Chandrashekar Patnala
Keyword(s):  
Indian Institute ◽  
Categorical Variables ◽  
South Indian Population ◽  
Total Knee Replacements ◽  
South Indian ◽  
Knee Replacements ◽  
Total Knee ◽  
Elective Surgical Procedure ◽  
Operating Surgeon ◽  
Insight Into

<p class="abstract"><strong>Background:</strong> <span lang="EN-IN">Total knee replacement (TKR) is the most widely practised elective surgical procedure for advanced osteoarthritic patients globally. There is paucity of data on TKR’s in south Indian population. This study was aimed at analysing the peri-operative data of primary TKR’s to ease in customising the imported implants for our population.</span></p><p class="abstract"><strong>Methods:</strong> <span lang="EN-IN">Data on 261 TKR’s performed in our institute over 40 months was collected. Categorical variables like age, gender, size of components used, co-morbidities and type of implants used were analysed</span>.<strong></strong></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">Out of 220 patients with 261 knees, 141 were females (173 knees) and 79 were males (88 knees). The age group of the cohort was 60±11.2 years (Mean±SD). Diabetes and Hypertension (n=152) were the commonest co morbidities. The Cruciate Retaining (CR) type of prosthesis was used to the maximum extent (n=218). Size 3 femoral and tibial component was the commonly used in males and size 2 in females. 143(54.8%) knees had tibio-femoral component mismatch.  </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">This study gives a reasonable insight into various aspects of the total knee replacements in a South Indian Institute. This data would be useful for manufacturing suitable implants customised for our population in the context of imported implants being in vogue. It also helps the operating surgeon to appropriately order for the desirable implants well in advance lest he should struggle intra operatively for want of better clinical outcome.</span></p>

scholarly journals Towards the understanding of lubrication mechanisms in total knee replacements – Part I: Experimental investigations

2021 ◽  
Vol 156 ◽  
pp. 106874 ◽  
Author(s):  
David Nečas ◽  
Martin Vrbka ◽  
Max Marian ◽  
Benedict Rothammer ◽  
Stephan Tremmel ◽  
...  
Keyword(s):  
Experimental Investigations ◽  
Total Knee Replacements ◽  
Knee Replacements ◽  
Total Knee ◽  
Lubrication Mechanisms

scholarly journals Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1952
Author(s):  
Benedict Rothammer ◽  
Kevin Neusser ◽  
Max Marian ◽  
Marcel Bartz ◽  
Sebastian Krauß ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Amorphous Carbon ◽  
Detailed Characterization ◽  
Carbon Coatings ◽  
Dlc Coatings ◽  
Total Knee Replacements ◽  
Knee Replacements ◽  
Total Knee ◽  
Amorphous Carbon Coatings

Diamond-like carbon (DLC) coatings have the potential to reduce implant wear and thus to contribute to avoiding premature failure and increase service life of total knee replacements (TKAs). This two-part study addresses the development of such coatings for ultrahigh molecular weight polyethylene (UHMWPE) tibial inlays as well as cobalt–chromium–molybdenum (CoCr) and titanium (Ti64) alloy femoral components. While a detailed characterization of the tribological behavior is the subject of part II, part I focusses on the deposition of pure (a‑C:H) and tungsten-doped hydrogen-containing amorphous carbon coatings (a‑C:H:W) and the detailed characterization of their chemical, cytological, mechanical and adhesion behavior. The coatings are fabricated by physical vapor deposition (PVD) and display typical DLC morphology and composition, as verified by focused ion beam scanning electron microscopy and Raman spectroscopy. Their roughness is higher than that of the plain substrates. Initial screening with contact angle and surface tension as well as in vitro testing by indirect and direct application indicate favorable cytocompatibility. The DLC coatings feature excellent mechanical properties with a substantial enhancement of indentation hardness and elastic modulus ratios. The adhesion of the coatings as determined in modified scratch tests can be considered as sufficient for the use in TKAs.

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