Table 2.

Comparison of patella shift between pre- and post-operation (degrees)

Measurement timing	Flexion (degrees)
	30	60	90
Pre-operation	1.9 ± 2.6*	0.4 ± 1.9*	−0.4.5 ± 1.3*
Post-operation	−0.02 ± 3.7*	−1.1 ± 1.7*	−1.2 ± 1.5*

Values are expressed as mean ± SD

*P < 0.05