Predicting the Effect of Bilateral Pelvic Osteotomy on Sagittal Alignment Correction and Surrounding Muscles: A Mathematical Model

Figure 5

Sagittal Representation of the spine (a) and posterior representation of the pelvis and hip (b) showing lengths l_1, l_2, Δz, and angle β used in the predictive equation for muscle length. These parameters are different for each muscle segment. The red line represents a muscle segment [9].

(a)

(b)