Table 4.

Changes in Patellar Height Parameters after DLO and MOWHTO

Patellar Height	DLO†	MOWHTO†	P value
Modified Insall-Salvati Index
Pre-op Post-op	1.17 (0.17)	1.14 (0.17)	0.61
	1.13 (0.18)	1.14 (0.19)	0.80
ΔmISI	0.039 (0.113)	0.001 (0.104)	0.22
Modified Caton-Deschamps Index
Pre-op Post-op	0.95(0.15)	1.03 (0.14)	0.07
	0.82 (0.16)∗	0.84 (0.15)∗	0.69
ΔmCDI	0.13 (0.18)	0.19 (0.23)	0.32
Modified Blackburne-Peel Index
Pre-op Post-op	0.76 (0.18)	0.72 (0.15)	0.38
	0.70 (0.17)∗	0.64 (0.14)∗	0.15
ΔmBPI	0.063 (0.13)	0.084 (0.09)	0.49

Δ: Change from pre-op to post-op values

^†Data in the second and third columns are expressed as mean and standard deviation (in parenthesis) values.

^∗Significant difference between pre- and post-op values