Knee arthroplasty today

Falez, Francesco

doi:10.1007/s00264-013-2274-x

Cited by 16 publications

(11 citation statements)

References 31 publications

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“…Mass loss was determined using a microbalance (SARTORIUS AG, Göttingen, Germany) with an uncertainty of ±0.01 mg and an accuracy of 0.01 mg. Each measurement was repeated three times and mean values were used. Dividing the progressive gravimetric data (mass loss) by the polyethylene density (0.934 g/cm 3 ) specified by the manufacturer, the volumetric wear was assessed.…”

Section: Wear Test Protocolmentioning

confidence: 99%

“…Even if there was an improvement in procedures of TKR [3], in vitro determination of wear rate constitutes a significant aspect in the preclinical validation of a prosthesis [4,5]. The wear of ultra-high molecular weight polyethylene (UHMWPE) prosthesis and its overall performance is influenced by many variables (including lubricant, load, sliding distance, design, patient weight, etc.…”

Section: Introductionmentioning

confidence: 99%

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Toward the interpretation of the combined effect of size and body weight on the tribological performance of total knee prostheses

Battaglia

Taddei

Tozzi

et al. 2014

International Orthopaedics (SICOT)

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Purpose The research questions of the present study were: (1) Is total knee prosthesis wear behaviour influenced by implant size, body weight and their combined effect? (2) Are these findings significant and helpful from a clinical point of view? Methods Two very different sizes of the same total knee prosthesis (TKP), previously tested with ISO 14243 parameters, were tested on a knee simulator for a further two million cycles using a modified ISO 14243 load waveform. Roughness examination was performed on the metallic components. Gravimetric and micro-Raman spectroscopic analyses were carried out on the polyethylene inserts. Results The average volumetric mass loss was 69 ± 3 mm 3 and 88 ± 4 mm 3 for smaller and bigger size, respectively. Bigger TKPs are little influenced by an increased load, while the wear trend of the smaller TKP showed a redoubled slope, and more significant morphology changes were observed. However, the two sizes seem to behave similarly when subjected to a load increase of 15 %; the slope of the volumetric mass loss trend was comparable for the two sets of inserts, which did not appear significantly different also at the molecular level. Roughness average parameters of the lateral femoral condyle support this evidence. Conclusions It can be asserted that the body weight and implant size are relevant to the understanding of TKP wear behaviour. A post-implantation body weight increase in a patient with smaller knee dimensions could results in more critical effects on prosthesis long-term performance.

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Section: Wear Test Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Toward the interpretation of the combined effect of size and body weight on the tribological performance of total knee prostheses

Battaglia

Taddei

Tozzi

et al. 2014

International Orthopaedics (SICOT)

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“…Whether or not patellar resurfacing is associated with less anterior knee pain and better long-term clinical outcome remains controversial. Some authors have found better results with patellar resurfacing [3,6], while others have not found any significant difference in outcome between patellar resurfacing and traditional treatment [8][9][10][11][12]. The aim of our study was to compare patelloplasty, a rarely used surgical technique, to traditional treatment in TKA.…”

Section: Discussionmentioning

confidence: 99%

“…Some surgeons recommend that the patella should always be resurfaced [1][2][3], as the procedure has a low complication rate [4,5] with less anterior knee pain [3,6] and lower risk of re-operation [7]. Others argue that clinical results of non-resurfacing (patellar retention) [8][9][10][11][12] are similar to those of resurfacing, without the added complications (component failure, instability, fracture and tendon rupture) associated with resurfacing [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Better results with patelloplasty compared to traditional total knee arthroplasty

Župan

Snoj

Antolič³

et al. 2014

International Orthopaedics (SICOT)

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“…This was followed by the "Foot and Ankle" special issue hosted by Wolfgang Schneider and Karl Knahr from Austria in September 2013 [9]. Francesco Falez from Italy was the Special Guest Editor for the "Knee Arthroplasty" volume in February 2014 [10]. Another special issue dedicated to tissue engineering and regenerative medicine was released in September 2014 by the experienced Croatian team of Pećina and Vukičevic [11].…”

mentioning

confidence: 99%