Knee osteoarthritis is one of the most common pathologies in old people, and the leading cause of pain and disability. Symptoms include joint pain, stiffness, limited mobility, functional impairment and proprioceptive deficit. When conservative treatments fail to control these symptoms, a total knee replacement (TKR) is the chosen treatment, mainly because of its efficacy on pain relief. In recent decades, this surgical procedure has been soared, and it has also aroused the interest of researches about the patients' outcomes after surgery. Despite the TKR results in good reported outcomes, after surgery patients may manifest persistent pain and problems affecting to their functionality, stability, walking speed, proprioception, motor control, risk of falling and therefore to their quality of life. In more than a third of the cases, those deficiencies may be extended after surgery from six months to one year, when subjects use to achieve the plateau functional values. Traditional rehabilitation programs have been usually focused on improving muscle strength of the lower limbs as well as the functionality with specific exercises to achieve this purpose, and to a lesser extent on balance and proprioception exercises. Evidence supports this approach. Yet, task-oriented rehabilitation focusing on balance enhancement may be one of the most important factors for a complete rehabilitation, since benefits of proprioceptive and balance trainings may range from better stability and motor control, improvements in both static and dynamic balance and enhanced functionality. Indeed, recent studies have shown that the combination of traditional functional rehabilitation together with balance training may help to restore functional deficits to a larger extent than usual therapy, and based on a systematic review published (Moutzori, 2015) and in our previous works (Roig, 2016), sensori-motor training is an acceptable adjust to usual physiotherapy care . Looking into the effect of preoperative trainings or education before TKR surgery, it is aimed at improving the physical function, but also managing the expectations of the surgery for a better recovery. There is from low to moderate evidence about the effects of TKR pre-interventional training programs, and some authors have argued that the effects are too small to be consider clinically relevant. In general, the preoperative program is usually focused on functional and strengthening exercises. Despite of proprioception is used in the clinical practice for the prevention and recovery of many orthopedics injuries, the amount of evidence about the effects of proprioceptive training programs for knee and hip replacement is not large, few works compares pre-habilitation and post-rehabilitation programs, and there is not systematically reviewed evidence reporting the efficacy of balance and proprioceptive pre-interventional training programs. In this framework, this aimed at evaluating the effects of specific-task oriented proprioceptive and balance training programs when conducted by patients undergoing TKR before and after surgery, and will compare these effects to the outcomes achieved with traditional strength-functional programs, as well as to no specific prehabilitation training.
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Knee injury and Osteoarthritis Outcome Score (KOOS)
Timeframe: change from baseline to the week before surgery, 2 and 6 weeks after surgery
Berg Balance Scale (BBS)
Timeframe: change from baseline to the week before surgery, 2 and 6 weeks after surgery