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Bone & Joint Open
Vol. 4, Issue 1 | Pages 3 - 12
4 Jan 2023
Hardwick-Morris M Twiggs J Miles B Al-Dirini RMA Taylor M Balakumar J Walter WL

Aims

Iliopsoas impingement occurs in 4% to 30% of patients after undergoing total hip arthroplasty (THA). Despite a relatively high incidence, there are few attempts at modelling impingement between the iliopsoas and acetabular component, and no attempts at modelling this in a representative cohort of subjects. The purpose of this study was to develop a novel computational model for quantifying the impingement between the iliopsoas and acetabular component and validate its utility in a case-controlled investigation.

Methods

This was a retrospective cohort study of patients who underwent THA surgery that included 23 symptomatic patients diagnosed with iliopsoas tendonitis, and 23 patients not diagnosed with iliopsoas tendonitis. All patients received postoperative CT imaging, postoperative standing radiography, and had minimum six months’ follow-up. 3D models of each patient’s prosthetic and bony anatomy were generated, landmarked, and simulated in a novel iliopsoas impingement detection model in supine and standing pelvic positions. Logistic regression models were implemented to determine if the probability of pain could be significantly predicted. Receiver operating characteristic curves were generated to determine the model’s sensitivity, specificity, and area under the curve (AUC).


Bone & Joint Open
Vol. 3, Issue 12 | Pages 960 - 968
23 Dec 2022
Hardwick-Morris M Wigmore E Twiggs J Miles B Jones CW Yates PJ

Aims

Leg length discrepancy (LLD) is a common pre- and postoperative issue in total hip arthroplasty (THA) patients. The conventional technique for measuring LLD has historically been on a non-weightbearing anteroposterior pelvic radiograph; however, this does not capture many potential sources of LLD. The aim of this study was to determine if long-limb EOS radiology can provide a more reproducible and holistic measurement of LLD.

Methods

In all, 93 patients who underwent a THA received a standardized preoperative EOS scan, anteroposterior (AP) radiograph, and clinical LLD assessment. Overall, 13 measurements were taken along both anatomical and functional axes and measured twice by an orthopaedic fellow and surgical planning engineer to calculate intraoperator reproducibility and correlations between measurements.


The Journal of Bone & Joint Surgery British Volume
Vol. 74-B, Issue 6 | Pages 923 - 927
1 Nov 1992
Sanderson P Morris M Stanley J Fahmy N

We studied prospectively the relationship between serum lipids and Dupuytren's disease of the hand in 85 patients, 65 men and 20 women. The Dupuytren patients had significantly higher fasting serum cholesterol and triglyceride levels than did the controls (p < 0.001). The raised levels of serum lipids appeared to be associated with the pathogenesis of Dupuytren's disease, and this may help to explain the high incidence of Dupuytren's disease in alcoholic, diabetic and epileptic patients, since these conditions are also associated with raised serum lipid levels.


The Journal of Bone & Joint Surgery British Volume
Vol. 74-B, Issue 4 | Pages 627 - 628
1 Jul 1992
Muddu B Barrie J Morris M


The Journal of Bone & Joint Surgery British Volume
Vol. 72-B, Issue 1 | Pages 147 - 147
1 Jan 1990
Muddu B Morris M Fahmy N