RESUMO
Objective To observe the effects of individual prehabilitation on the functional outcome six weeks after total knee arthroplas-ty (TKA). Methods The patients undergoing TKA from March, 2013 to August, 2015 were randomly divided into prehabilitation group (n=30) and control group (n=29). The prehabilitation group received individual rehabilitation since enrolled in the study. The control group re-ceived no prehabilitation. All the patients received regular pre-surgical education, surgery and post-surgical rehabilitation. Both groups were evaluated with Numerical Rating Scale (NRS) of pain, active range of motion (AROM), Manual Muscle Test (MMT), fall index, TimedUp and Go(TUG), and Hospital for Special Surgery-Knee Scale (HSS-KS). Results The scores of NRS reduced six weeks after TKA (t>2.342, P2.827, P0.05), and it increased in the control group six weeks after TKA (t>3.555, P0.05);the AROM of knee extension increased before TKA in the control group (Z=-2.257, P=0.024), and no increasement was found in the prehabilitation group (Z=0, P=1.000), and it decreased six weeks after TKA in both groups (Z>2.247, P2.387, P0.05). The muscle strength of trunk extensor and the upside of rectus abdominis showed no statistical difference between two groups six weeks after TKA (t0.05), the muscle strength of the downside of rectus abdominis and external oblique was more in the prehabilitation group than in the control group (t=2.585, P=0.013). There was no significant difference in the fall index be-fore TKA (t0.05), and it was lower in the prehabilitation group than in the control group six weeks after TKA (t=-2.837, P=0.007). The time of TUG shortened before TKA in the prehabilitation group (t=3.554, P=0.002), and it prolonged in the control group (t=-4.507, P2.092, P<0.05). Conclusion Individual prehabilitation could reduce pain, and improve the trunk muscles, the ability of walking and the function of the knee before and six weeks after TKA.
RESUMO
Objective To investigate the isokinetic strength of knee extensors and flexors in patients with knee osteoarthritis (KOA), and to establish the correlation between the isokinetic strength and function in patients with KOA. Methods 23 patients with bilateral KOA and 14 matched normal controls finished the isokinetic test of knee extensors and flexors, the Five Times Sit-to-Stand Test (FTSST), Gait analy-sis, and Balance test. The KOA patients were evaluated with Visual Analog Scale (VAS) for pain and Western Ontario and McMaster Univer-sity Osteoarthritis Index (WOMAC). Results It was less of the peak torque, average peak torque, average power, max rep total work, total work of knee extensors and flexors in the mainly involved limbs than the contralateral limbs (P0.05). Conclusion It is weak of the isokinetic strength of knee extensors and flexors in patients with KOA in the mainly involved limb, as well as the isokinetic strength of knee extensors compared with the normal controls. The changes in the ex-tensors and flexors are not equivalent. The peak torque of knee extensors significantly correlated with the pain and functions of the knee.