Title : THA: Doctor, my leg is longer The importance of pelvic obliquity and spine deformities in THR
Abstract:
I will discuss during this presentation introduction about the definition and percentage of occurrence limb length inequality during total hip arthroplasty and how much the magnitude of disability resulted from this lengthening or shortening and also, I will discuss the role of pelvic obliquity whether intrapelvic or infrapelvic and soft tissue contractures in occurrence of limb inequality and I will explain the difference between pelvic tilt and pelvic obliquity. I will also discuss the role of spinal deformity and whether the spine is balanced or not balanced in occurrence of limb inequality during hip replacement. I will also discuss the way how both clinically and radiologically we measure the pelvic obliquity and spinal deformities and I will present some slides showing my study in a series of cases of total hip replacements done in a patient with either pelvic obliquity or spinal deformities and I will explain the way how I can avoid preoperatively and intraoperatively the limb length inequality during total hip arthroplasty. I also present slides of few clinical cases from my study. The end slides of my presentation I will introduce the conclusion of my study one of the conclusions is that patients must be aware that in some situations the lower limb must be lengthened to achieve component stability and techniques of accurate preoperative templating, anatomic component geometry & intraoperative assessment have diminished the prevalence of inadvertent lengthening of the limb by reproducing the normal anatomic relationships.
