Prediction of the hip joint centre by predictive methods, functional methods and ultrasound imaging technique

Rights statement
Awarding institution
  • University of Strathclyde
Date of award
  • 2012
Thesis identifier
  • T13228
Qualification Level
Qualification Name
Department, School or Faculty
  • To study joint kinetics and kinematics during gait analysis, it is necessary that the position of the Hip Joint Centre (HJC) from a point in a local frame of reference is determined as accurately as possible. Various studies have stated that failure to do so results in errors up to 20 in joint kinematics. It is difficult to obtain the exact location of the HJC as it is very deeply seated inside the body with a lot of tissue and muscle layers coverings. The theories that attempt to locate the HJC accurately are either predictive or functional methods. The predictive methods that are extensively used in clinical settings use set of regression equations based on pelvic geometry and leg length. The functional methods include the sphere fit techniques which reduce the errors as compared to the regression equations but both the methods are greatly affected by Soft Tissue Artefacts. This study performs a comparison between the predictive and functional methods by exploring the ultrasound imaging a validation technique. The findings suggested that all the current validation techniques are subject to errors due to soft tissue artefacts which led to erroneous location of the HJC. The predictive methods proved to be the least accurate which was disturbing because they are widely used in clinics as a method to locate the HJC.
Resource Type
Date Created
  • 2012
Former identifier
  • 947893