Overall, seven sensori-motor measures were identified as significant predictors for one or more of the gait parameters: low contrast visual acuity, touch, vibration sense, vestibular X test writing performance, quadriceps strength, reaction time and sway.
In all, seven sensori-motor measures were identified as significant predictors for one or more of the gait parameters: low-contrast visual acuity, touch, vibration sense, vestibular X test writing performance, quadriceps strength, reaction time and sway.
After controlling for age, poor tactile sensitivity, vibration sense and proprioception, quadriceps strength and reaction time were associated with sway on the floor conditions A and B).
Touch was included in the multiple regression equation when predicting sway with eyes open, whilst proprioception was included when predicting sway with eyes closed, with vibration sense included in both equations.
In condition C (eyes open, on the foam), other postural control systems including contrast sensitivity, quadriceps strength and reaction time were found to be associated with sway in addition to peripheral sensation (vibration sense).
Vibration sense testing was performed with a 128-Hz tuning fork and documented by a single investigator using an 8-point numeric scale.
Vibration sense was tested 3 times at each measurement at the terminal inter phalangeal joint of the great toe and the medial malleolus and calculated as the mean.
Evaluation of vibration sense and motor block was performed every 15 minutes (except during the period of surgery) until all variables returned to baseline.
A number of these measures: visual contrast sensitivity, touch, vibration sense
, reaction time, sway on foam with eyes open, static balance (partial [X.sup.2] = 6.3, df = 2, p = 0.043) and dynamic balance partial [X.sup.2] = 14.2, df = 4, p = 0.007) also revealed differences between those who had died within the 3-year follow-up period and those still surviving.
None of the literature published so far has documented vibration sense separately, loss of vibration sense increase the patient acceptability to the anaesthetic technique.
Moreover addition of clonidine also improves the quality of blockade as evident by loss of vibration sense.