Intracapsular pressure and loosening of hip prostheses. Preoperative measurements in 18 hips
(1997) In Acta Orthopaedica Scandinavica 68(3). p.231-234- Abstract
- We measured the intracapsular pressure preoperatively in 18 hips (17 patients) before revision of a total hip arthroplasty because of aseptic loosening. Distension of the joint capsule was measured with sonography in 13 cases. In extension, the mean intracapsular pressure was 26 (0-60) mmHg, in extension and inward rotation it was 159 (24-280) mmHg, in extension and outward rotation it was 30 (3-67) mmHg and in 45 degrees of flexion it was 12 (0-28) mmHg. A mean of 6 (0.5-20) mL of joint fluid was aspirated after the pressure measurements. Sonography showed increased joint fluid/synovial edema and/or increased capsular thickness, as compared to 34 unrevised, radiographically not loose prosthetic hips, and that the capsular distension... (More)
- We measured the intracapsular pressure preoperatively in 18 hips (17 patients) before revision of a total hip arthroplasty because of aseptic loosening. Distension of the joint capsule was measured with sonography in 13 cases. In extension, the mean intracapsular pressure was 26 (0-60) mmHg, in extension and inward rotation it was 159 (24-280) mmHg, in extension and outward rotation it was 30 (3-67) mmHg and in 45 degrees of flexion it was 12 (0-28) mmHg. A mean of 6 (0.5-20) mL of joint fluid was aspirated after the pressure measurements. Sonography showed increased joint fluid/synovial edema and/or increased capsular thickness, as compared to 34 unrevised, radiographically not loose prosthetic hips, and that the capsular distension correlated to intracapsular pressure during extension and inward rotation. We conclude that the intracapsular pressure usually is elevated in a hip joint with loose prosthetic components, that the intracapsular pressure varies with the position of the hip and that capsular distension reflects increased intracapsular pressure. The increased and often very high pressure, varying during gait, may pump debris away from the joint along the interfaces and even by itself cause osteolysis and loosening. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1112391
- author
- Robertsson, Otto LU ; Wingstrand, Hans LU ; Kesteris, Uldis LU ; Jonsson, Kjell LU and Önnerfält, Rolf LU
- organization
- publishing date
- 1997
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Acta Orthopaedica Scandinavica
- volume
- 68
- issue
- 3
- pages
- 231 - 234
- publisher
- Taylor & Francis
- external identifiers
-
- pmid:9246982
- scopus:0030857287
- ISSN
- 0001-6470
- DOI
- 10.3109/17453679708996690
- language
- English
- LU publication?
- yes
- id
- ff64ea42-1455-463a-b2bf-e1c98bbeb699 (old id 1112391)
- date added to LUP
- 2016-04-01 15:35:18
- date last changed
- 2022-03-14 18:59:57
@article{ff64ea42-1455-463a-b2bf-e1c98bbeb699,
abstract = {{We measured the intracapsular pressure preoperatively in 18 hips (17 patients) before revision of a total hip arthroplasty because of aseptic loosening. Distension of the joint capsule was measured with sonography in 13 cases. In extension, the mean intracapsular pressure was 26 (0-60) mmHg, in extension and inward rotation it was 159 (24-280) mmHg, in extension and outward rotation it was 30 (3-67) mmHg and in 45 degrees of flexion it was 12 (0-28) mmHg. A mean of 6 (0.5-20) mL of joint fluid was aspirated after the pressure measurements. Sonography showed increased joint fluid/synovial edema and/or increased capsular thickness, as compared to 34 unrevised, radiographically not loose prosthetic hips, and that the capsular distension correlated to intracapsular pressure during extension and inward rotation. We conclude that the intracapsular pressure usually is elevated in a hip joint with loose prosthetic components, that the intracapsular pressure varies with the position of the hip and that capsular distension reflects increased intracapsular pressure. The increased and often very high pressure, varying during gait, may pump debris away from the joint along the interfaces and even by itself cause osteolysis and loosening.}},
author = {{Robertsson, Otto and Wingstrand, Hans and Kesteris, Uldis and Jonsson, Kjell and Önnerfält, Rolf}},
issn = {{0001-6470}},
language = {{eng}},
number = {{3}},
pages = {{231--234}},
publisher = {{Taylor & Francis}},
series = {{Acta Orthopaedica Scandinavica}},
title = {{Intracapsular pressure and loosening of hip prostheses. Preoperative measurements in 18 hips}},
url = {{http://dx.doi.org/10.3109/17453679708996690}},
doi = {{10.3109/17453679708996690}},
volume = {{68}},
year = {{1997}},
}