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Table 3 KOS-ADL evaluation (Functional limitations) 1 year after the surgery

From: Clinical outcomes of Ti-Ni shape-memory patella concentrator combined with cannulated compression screws in the treatment of C2 and C3 patella fracture: a retrospective study of 54 cases

  Activity is not difficult Activity is minimally difficult Activity is somewhat difficult Activity is fairly difficult Activity is very difficult I am unable to do the activity No answer
Walk 25 13 8 3 3 0 2
Go up stairs 17 18 5 9 3 0 2
Go down stairs 12 18 8 11 3 0 2
Stand 27 12 5 2 5 0 3
Kneel on front 4 12 9 6 9 12 2
Squat 14 12 2 12 2 6 6
Sit with knee bent 22 11 12 5 0 0 4
Rise from a chair 20 12 6 8 3 0 5