Personne se tenant un genou douloureux

Principal investigators: H.Portier ; R.Nizard

InvestigatorsC. Jaffré

Total knee arthroplasty (TKA) is most commonly performed for osteoarthritis (90% of the cases) and also, to a lesser extent, for other knee diseases such as chronic inflammatory rheumatism, tumors and trauma. The primary role of TKA is to decrease pain and restore patient mobility. According to an ANSM analysis of health insurance data, 80819 total knee prostheses were implanted in France in 2013, approximately 30% more than in 2008.

However, the surgical procedure causes muscular amidation and amyotrophy, which mainly affects type 1 fibers. Ten day post-surgery, only 55% of the operated patients lock their knees. These patients exhibited, at time, decreased muscle strength of the knee extensors as well as diminished knee mobility.

To improve TKA outcome through innovative muscle strength program.

Post-surgery TKA rehabilitation, which is essential in the recovery of physical abilities, is predominantly performed using early isometric muscle work, albeit concentric dynamic load exercises are sometimes used. However, eccentric dynamic exercises are more efficient in competitive sports and lead to a faster gain in strength when compared to the concentric ones. The project conducted at the B3OA aims to test different protocols for muscle strengthening in the pre- and post-TKA surgery and evaluate their effects on the quality of balance, on walking and on the occurrence of kinesiophobia.