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The Journal of Bone & Joint Surgery British Volume
Vol. 76-B, Issue 1 | Pages 155 - 155
1 Jan 1994
Wilkes R Mackinnon J Thomas W


The Journal of Bone & Joint Surgery British Volume
Vol. 72-B, Issue 3 | Pages 444 - 446
1 May 1990
Bannister G Young S Baker A Mackinnon J Magnusson P

Bleeding from cancellous bone causes lamination within bone cement and at its prosthetic interfaces, and weakens the fixation of joint replacements. We examined the effects of anaesthesia and blood pressure on bleeding in human cancellous bone, and investigated the local response to freezing saline, 1:200,000 adrenaline and hydrogen peroxide. Spinal anaesthesia reduced cancellous bleeding by an average of 44%, local freezing saline by 24%. Saline at room temperature, adrenaline solution and hydrogen peroxide each reduced it by 14%. The effects of spinal anaesthesia and of freezing saline were additive: used together they reduced bleeding by 56%. The reduction of blood contamination of cement and its interfaces should contribute to better prosthetic fixation.


The Journal of Bone & Joint Surgery British Volume
Vol. 70-B, Issue 5 | Pages 791 - 794
1 Nov 1988
Mackinnon J Aziz T Dixon J

There is a trend away from amputation for limb cancer; salvage procedures are becoming more widespread. We describe one case of interscapulothoracic resection of the shoulder and discuss methods of maximising the residual function of the arm. The procedure is recommended for patients with the correct indications.


The Journal of Bone & Joint Surgery British Volume
Vol. 70-B, Issue 2 | Pages 217 - 223
1 Mar 1988
Mackinnon J Young S Baily R

Since 1974, we have made a prospective study in Bristol of the results of unicompartmental knee replacement using the St Georg sledge prosthesis. A total of 115 knees in 100 patients have been followed up for 2 to 12 years (mean, 4 years 9 months). Results have assessed both by the Bristol knee score and by survivorship studies on the total series of 138 knees. Results were excellent or good in 86% and fair or poor in 14%. The survivorship study (based on a definition of failure which included significant pain or a dissatisfied patient or the need for revision) showed a cumulative success rate of 76.4% at six years, with no further failures after that time. Seven knees have been revised, in most cases for deterioration of the contralateral compartment. The operation is recommended as a satisfactory and durable form of treatment for osteoarthritis affecting a single tibiofemoral compartment.