PATIENT PERCEPTION OF LIMB LENGTH IS CORRELATED WITH PELVIC OBLIQUITY AND FUNCTIONAL LEG LENGTH MORE THAN ANATOMICAL FEMORAL LENGTH

IntroductionLimb length discrepancy after THA can result in medicolegal litigation. It can create discomfort for the patient and potentially cause back pain or affect the longevity of the implant. Some patients tolerate the length inequality better compared to others despite difference in anatomical femoral length after surgery.Methods and materialsWe analyzed the 3D EOS images of 75 consecutive patients who underwent primary unilateral THA (27 men, 48 women). We measured the 3D length of the femur and tibia (anatomical length), the 3D global anatomical length (the sum of femur and tibia anatomical lengths), the 3D functional length (center of the femoral head to center of the ankle), femoral neck-shaft angle, hip-knee-ankle angle, knee flexum/recurvatum angle, sacral slopes and pelvic incidence. We correlated these parameters with the patient perception of the leg length.ResultsThe values for leg length and pelvic parameters are shown in table 1. 37 patients had a perception of the LLD (49.3%). When the ...