Table 1.

The scoring scale used in this study to assess pain, stair walking ability, walking ability and requirement for walking aids

Score	Pain	Stairs	Walking	Walking aids
1	None	Unable	Unable	Wheelchair
2	Mild	Up with rail and unable down	Inside house	Frame
3	Moderate	Up and down with rail	400 yards	Crutches
4	Severe	Normal up and rail down	800 yards	Sticks
5		Normal	1,600 yards	One stick
6			Unlimited	Unaided