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Mini-BESTest score changes in patients with and without postural instability. ∗gray field indicates the risk of falls (mini-BESTest < 19 points). abbreviations: mini-BESTest, mini-balance evaluation systems test; PI, the point of movement disorder society unified Parkinson's disease rating scale-part III 12 (postural stability score); PRE, preoperation period; POST, postoperation period; DISC, discharge period.
