Cylinder grip at 12 months (N = 24) 1.00 Abbreviation: EQ-VAS = EuroQol Visual Analogue Scale. aPart of the satisfaction questionnaire. *P o 0.05; **P o 0.01. 2 0.86** 1.00 3 0.44** 0.50** 1.00 4 0.72** 0.63** 0.42** 1.00 5 − 0.27 − 0.22 − 0.32 − 0.14 1.00 6 ...