The Influence Of Total Knee Arthroplasty On Static Body Balance Of Patients Who Suffered From Knee Osteoarthritis

Objective:Most researches take the function and the length survionship of the knee after operetaion as main standard of success of TKA, few of them considered the influence of total knee arthroplasty on body balance of patients who suffered from knee osteoarthritis. The aim of this study is to assess the changes induced by the total knee arthroplasty procedure in patient’s postural control who from knee osteoarthritis (OA), and analyze if there any relationship between changing of body balance and recovering of the knee’s function at the same time point. Methods:Twenty-one patients with single osteoarthritis knee who underwent TKA at our department from January 2011 to December 2013 were analyzed (12 consecutive patients underwent right knee, and 9 consecutive patients underwent left knee). The measurements were performed using the corresponding instrument and subjects completed three consecutive double-limb standing balance trials. The Medio-lateral, antero-posterior displacements and Locus length of GCP(LG) in unit-time were derived from the instrument. Make correlation analysis between changing degree of them and degree of changing HSS score. Results:The mean GCP in the medio-lateral direction shifted to the operative side in both groups after surgery, there was a direct linear relationship between shifting degree of GCP in the medio-lateral direction and degree of changing HSS score at the same period after the surgery. There was a poor relationship between shifting degree of GCP in the Antero-posterior direction and degree of changing HSS score. Conclusions:The body balance of patients had been significantly improved after TKA, There was a linear relationship between improving degree of body balance in the medio-lateral direction and changing of HSS score at the same period after the surgery.