Different effects of femoral and tibial rotation on the different measurements of patella tilting: An axial computed tomography study

Table 1 Measurements of patella tilt angles and its neighboring bone rotation

	Mean ± SD (N = 45)	95% CI for Mean	Minimum	Maximum
Bone rotation
FR	5.10 ± 10.52	1.94~8.26	-12.20	24.80
TR	8.48 ± 8.27	6.00~10.97	-8.40	29.90
FRRT	-3.38 ± 6.21	-3.17~3.85	-16.80	12.80
Patellar alignment
PTA-G	18.51 ± 8.46	15.97~21.05	3.70	37.10
PTA-S	21.80 ± 5.03	20.28~23.31	7.10	33.10
PTA-M	14.17 ± 5.90	12.40~15.94	1.90	32.30

CI: Confidence Interval for Mean; FR: Femoral rotation; TR: Tibial rotation; FRRT: Femoral rotation relative to tibia; PTA-G: Patella tilt angle of Grelsamer; PTA-S: Patella tilt angle of Sasaki; PTA-M: modified patella tilt angle of Fukerson.

ISSN: 1749-799X