Open Wedge High Tibial Osteotomy with Distal Tubercle Osteotomy Lessens Change in Patellar Position

Table 2

Pre- and postoperative radiographic measurements by operative group.

Variables	OWHTO ()	OWHTO/DTO ()	value
Preoperative Insall-Salvati	1.02 ± 0.13	1.01 ± 0.23	0.932
Postoperative Insall-Salvati	0.97 ± 0.12	1.00 ± 0.14	0.353
Preoperative modified Insall-Salvati	1.48 ± 0.13	1.46 ± 0.16	0.701
Postoperative modified Insall-Salvati	1.40 ± 0.15	1.47 ± 0.17	0.072
Preoperative Blackburne-Peel	0.80 ± 0.11	0.79 ± 0.11	0.800
Postoperative Blackburne-Peel	0.71 ± 0.15	0.76 ± 0.15	0.138
Preoperative Caton-Deschamps	0.93 ± 0.08	0.90 ± 0.12	0.237
Postoperative Caton-Deschamps	0.83 ± 0.11	0.86 ± 0.14	0.265
Preoperative modified Miura-Kawamura	0.89 ± 0.08	0.84 ± 0.12	0.077
Postoperative modified Miura-Kawamura	0.81 ± 0.12	0.83 ± 0.16	0.552
Preoperative tibial slope (degrees)	8.3 ± 3.5	8.7 ± 3.9	0.655
Postoperative tibial slope (degrees)	11.1 ± 3.23	11.2 ± 4.16	0.943
Preoperative lateral patella tilt (degrees)	14.1 ± 2.47	14.5 ± 3.69	0.582
Postoperative lateral patella tilt (degrees)	12.1 ± 2.18	13.1 ± 3.98	0.249
Preoperative lateral patella shift	0.14 ± 0.03	0.15 ± 0.47	0.493
Postoperative lateral patella shift	0.13 ± 0.04	0.14 ± 0.05	0.450

Values expressed as mean SD; OWHTO, open wedge high tibial osteotomy; DTO, distal tubercle osteotomy.