Location of the hip joint centre using ultrasonic techniques

Kinematic and kinetic gait parameters are essential indicators of musculoskeletal wellbeing. In order to accurately determine these parameters, the hip joint centre (HJC) must first be located. The accuracy with which it is located directly affects the estimated magnitude of these parameters; yet current techniques still give inaccurate results.This study was therefore aimed at exploring the features of modern ultrasonography with a view to developing an accurate and convenient method of locating the HJC using medical ultrasound imaging.Five participants whose BMI were less than 26.5 took part in the study in accordance with ethical approval. Ultrasound images of their hip joint were taken. Points created on the femoral head arc projected in the ultrasound image were used to fit a circle along in the probe reference frame. Coordinate transformations were then performed to relate the centre of this circle (which ought to coincide with the HJC) in pelvic anatomical reference frame.Results obtained for one of the participants were validated with MRI technique. With respect to the position of the HJC determined from the MRI images, the ultrasound technique located the HJC to within 1mm and 3.97mm in the anterior-posterior and medio-lateral directions respectively. The inferior-superior coordinates were 41.55mm apart. Further studies are however required to refine the methodology and ascertain its accuracy limits.

Name dc:type.qualificationname

msc

Level dc:type.qualificationlevel

masters-pg

Grantor dc:publisher.institution

University of Strathclyde

Year dc:date.issued

2015

Author dc:creator

• Eze, Solomon Chika

DOI

10.48730/gwbj-cm36

Identifier

T14344

Author Identifier

201485843

OAI identifier oai:identifier

oai:strathclyde:nz805z78z