Limb Lengthening after Primary Total Knee Arthroplasty: Customized Patient-Specific Instrumentation Does Not Affect Expected Limb Lengthening

Table 4

Regression analysis on leg length (R-square = 0.04,  = 0.49).

	Coefficient	95% confidence interval	value
Preoperative deformity status
Valgus	11.57	−12.19–35.31	0.337
Varus	Reference
Implant type
Sigma	17.89	−9.6–45.49	0.2
Customized	Reference
Body mass index	−0.23	−1.53–1.07	0.73
Age	−0.09	−0.73–0.55	0.79
Sex
Male	4.3	−15.36–23.96	0.67
Female	Reference