Measurement of hip prostheses using image analysis. The maxima hip technique.

A computer-based image analysis system has been developed as a research tool in total hip replacement. The system has been programmed to take multiple measurements from coronal plane radiographs. Poor quality radiographic images can be enhanced and standardised. The measurements which can be obtained include stem subsidence, cup migration, cup wear, and stem loosening. Reproducibility and accuracy were +/- 0.01 mm and +/- 0.5 mm respectively. The present application is in retrospective research, but prospective monitoring of radiographs is planned.

[1]  M. Older,et al.  Subsidence of the femoral component related to long-term outcome of hip replacement. , 1989, The Journal of bone and joint surgery. British volume.

[2]  J E Bechtold,et al.  Application of computer graphics in the design of custom orthopedic implants. , 1986, The Orthopedic clinics of North America.

[3]  A P Dhawan,et al.  A review on biomedical image processing and future trends. , 1990, Computer methods and programs in biomedicine.

[4]  D R Pedersen,et al.  How definition of "loosening" affects the incidence of loose total hip reconstructions. , 1986, Clinical orthopaedics and related research.

[5]  H K Huang,et al.  Progress in image processing technology related to radiological sciences: a five-year review. , 1987, Computer methods and programs in biomedicine.

[6]  C. J. Taylor,et al.  Prosthetic hip failure: preliminary findings of retrospective radiograph image analysis. , 1988, Engineering in medicine.

[7]  D W Hukins,et al.  Prosthetic hip failure: retrospective radiograph image analysis of the acetabular cup. , 1989, Journal of biomedical engineering.

[8]  C. Sutherland.  Practical application of computer-generated three-dimensional reconstructions in orthopedic surgery. , 1986, The Orthopedic clinics of North America.

[9]  D L McEachron,et al.  Image processing for the rest of us: the potential utility of inexpensive computerized image analysis in clinical pathology and radiology. , 1989, Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society.

[10]  D N Davis,et al.  Reliability of Cephalometric Analysis Using Manual and Interactive Computer Methods , 1991, British journal of orthodontics.