Accuracy of intraoperative estimation of femoral stem anteversion in cementless total hip arthroplasty by using a digital protractor and a spirit level

Table 2 Factors influencing the angle overestimation and underestimation within 5° in method C, analyzed by using multivariate regression.

Factors	Overestimation within 5° (n=42 hips) p-value	Underestimation within 5° (n=28 hips) p-value
Age	0.460	0.843
Sex	0.925	0.893
Body mass index	0.773	0.984
Diagnosis	0.652	0.955
Stem type	0.776	0.866
True anteversion	0.549	0.671
Tibio-femoral angle	0.008	0.164

ISSN: 1749-799X