Photographic measurement of the inclination of the acetabular component in total hip replacement using the posterior approach

Authors: Hill, J.C., Gibson, D.P., Pagoti, R. and Beverland, D.E.

Journal: Journal of Bone and Joint Surgery - Series B

Volume: 92

Issue: 9

Pages: 1209-1214

ISSN: 0301-620X

DOI: 10.1302/0301-620X.92B9.24476

Abstract:

The angle of inclination of the acetabular component in total hip replacement is a recognised contributing factor in dislocation and early wear. During non-navigated surgery, insertion of the acetabular component has traditionally been performed at an angle of 45° relative to the sagittal plane as judged by the surgeon's eye, the operative inclination. Typically, the method used to assess inclination is the measurement made on the post-operative anteroposterior radiograph, the radiological inclination. The aim of this study was to measure the intra-operative angle of inclination of the acetabular component on 60 consecutive patients in the lateral decubitus position when using a posterior approach during total hip replacement. This was achieved by taking intra-operative photographs of the acetabular inserter, representing the acetabular axis, and a horizontal reference. The results were compared with the post-operative radiological inclination. The mean post-operative radiological inclination was 13° greater than the photographed operative inclination, which was unexpectedly high. It appears that in the lateral decubitus position with a posterior approach, the uppermost hemipelvis adducts, thus reducing the apparent operative inclination. Surgeons using the posterior approach in lateral decubitus need to aim for a lower operative inclination than when operating with the patient supine in order to achieve an acceptable radiological inclination. ©2010 British Editorial Society of Bone and Joint Surgery.

Source: Scopus

Photographic measurement of the inclination of the acetabular component in total hip replacement using the posterior approach.

Authors: Hill, J.C., Gibson, D.P., Pagoti, R. and Beverland, D.E.

Journal: J Bone Joint Surg Br

Volume: 92

Issue: 9

Pages: 1209-1214

eISSN: 2044-5377

DOI: 10.1302/0301-620X.92B9.24476

Abstract:

The angle of inclination of the acetabular component in total hip replacement is a recognised contributing factor in dislocation and early wear. During non-navigated surgery, insertion of the acetabular component has traditionally been performed at an angle of 45 degrees relative to the sagittal plane as judged by the surgeon's eye, the operative inclination. Typically, the method used to assess inclination is the measurement made on the postoperative anteroposterior radiograph, the radiological inclination. The aim of this study was to measure the intra-operative angle of inclination of the acetabular component on 60 consecutive patients in the lateral decubitus position when using a posterior approach during total hip replacement. This was achieved by taking intra-operative photographs of the acetabular inserter, representing the acetabular axis, and a horizontal reference. The results were compared with the post-operative radiological inclination. The mean post-operative radiological inclination was 13 degrees greater than the photographed operative inclination, which was unexpectedly high. It appears that in the lateral decubitus position with a posterior approach, the uppermost hemipelvis adducts, thus reducing the apparent operative inclination. Surgeons using the posterior approach in lateral decubitus need to aim for a lower operative inclination than when operating with the patient supine in order to achieve an acceptable radiological inclination.

Source: PubMed

Photographic measurement of the inclination of the acetabular component in total hip replacement using the posterior approach

Authors: Hill, J.C., Gibson, D.P., Pagoti, R. and Beverland, D.E.

Journal: JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME

Volume: 92B

Issue: 9

Pages: 1209-1214

ISSN: 0301-620X

DOI: 10.1302/0301-620X.92B9.24476

Source: Web of Science (Lite)

Photographic measurement of the inclination of the acetabular component in total hip replacement using the posterior approach.

Authors: Hill, J.C., Gibson, D.P., Pagoti, R. and Beverland, D.E.

Journal: The Journal of bone and joint surgery. British volume

Volume: 92

Issue: 9

Pages: 1209-1214

eISSN: 2044-5377

ISSN: 0301-620X

DOI: 10.1302/0301-620x.92b9.24476

Abstract:

The angle of inclination of the acetabular component in total hip replacement is a recognised contributing factor in dislocation and early wear. During non-navigated surgery, insertion of the acetabular component has traditionally been performed at an angle of 45 degrees relative to the sagittal plane as judged by the surgeon's eye, the operative inclination. Typically, the method used to assess inclination is the measurement made on the postoperative anteroposterior radiograph, the radiological inclination. The aim of this study was to measure the intra-operative angle of inclination of the acetabular component on 60 consecutive patients in the lateral decubitus position when using a posterior approach during total hip replacement. This was achieved by taking intra-operative photographs of the acetabular inserter, representing the acetabular axis, and a horizontal reference. The results were compared with the post-operative radiological inclination. The mean post-operative radiological inclination was 13 degrees greater than the photographed operative inclination, which was unexpectedly high. It appears that in the lateral decubitus position with a posterior approach, the uppermost hemipelvis adducts, thus reducing the apparent operative inclination. Surgeons using the posterior approach in lateral decubitus need to aim for a lower operative inclination than when operating with the patient supine in order to achieve an acceptable radiological inclination.

Source: Europe PubMed Central