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The Bone & Joint Journal
Vol. 99-B, Issue 4_Supple_B | Pages 41 - 48
1 Apr 2017
Fernquest S Arnold C Palmer A Broomfield J Denton J Taylor A Glyn-Jones S

Aims

The aim of this study was to examine the real time in vivo kinematics of the hip in patients with cam-type femoroacetabular impingement (FAI).

Patients and Methods

A total of 50 patients (83 hips) underwent 4D dynamic CT scanning of the hip, producing real time osseous models of the pelvis and femur being moved through flexion, adduction, and internal rotation. The location and size of the cam deformity and its relationship to the angle of flexion of the hip and pelvic tilt, and the position of impingement were recorded.


The Journal of Bone & Joint Surgery British Volume
Vol. 90-B, Issue 4 | Pages 502 - 505
1 Apr 2008
Khan WS Agarwal M Malik AA Cox AG Denton J Holt EM

Metallosis after shoulder replacement has not previously been described in the literature. We report a patient who developed extensive metallosis after implantation of an uncemented Nottingham shoulder replacement. He underwent a revision procedure.

Examination of the retrieved prosthesis showed that the titanium porous coating was separating from the humeral stem and becoming embedded in the ultra-high-molecular-weight polyethylene glenoid component, resulting in abrasive wear of the humeral component. There was metallosis despite exchange of the modular humeral head. Both components had to be exchanged to resolve the problem.


The Journal of Bone & Joint Surgery British Volume
Vol. 70-B, Issue 4 | Pages 659 - 662
1 Aug 1988
Hoyland J Freemont A Denton J Thomas A McMillan J Jayson M

We examined soft tissue biopsies from 26 patients with symptomatic nerve root fibrosis and arachnoiditis after a previous laminectomy. Dense fibrous connective tissue was found about the nerve roots and in 14 cases (55%) fibrillar foreign material was seen within it. This material had the histochemical characteristics of cotton fibres from swabs and neurosurgical patties. In two other cases nerve root fibrosis was associated with residual radiopaque lipid thought to derive from earlier myelography. Our findings suggest that risks may be associated with the introduction of foreign material into the vertebral canal, and that microscopic fragments of surgical swabs and patties may have a role in the pathogenesis of postoperative periradicular fibrosis.


The Journal of Bone & Joint Surgery British Volume
Vol. 70-B, Issue 1 | Pages 84 - 84
1 Jan 1988
Denton J Manning M