Patellofemoral contact patterns before and after total knee arthroplasty: an in vitro measurement.

Biomed Eng Online · 2013 · PMC3736609 · PMID 23802712

Europe PMC DOI

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highly significantno p-value reported

Especially on the ridge there was a highly significant increase of the retropatellar pressure of about 109% in maximum flexion after TKA compared to natural knee.

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did not reach statistical significanceno p-value reported

Indeed our results showed a slightly higher maximum quadriceps load of 5% after TKA, although this difference did not reach statistical significance.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.