Table 3. Functional status before and after-operation of patients who had available records of activities of daily living.

Functional status	Number (%) of patients
	Before operation (n = 85)*	After operation (n = 96)**
Ambulation smoothly	51 (60.0)	0 (0.0)
Cane ambulation activity	11 (12.9)	2 (2.1)
Walker ambulation activity	7 (8.2)	16 (16.7)
Wheelchair ambulation activities	14 (16.5)	39 (40.6)
Bedridden	2 (2.4)	39 (40.6)

*Only 85 patients who had available records of activities of daily living before operation period

**Only 96 patients who had available records of activities of daily living after rehabilitation during post-operation period