Nedlands, Australia
Nedlands, Australia

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Edmondson M.,Perth Bone and Tissue Bank | Edmondson M.,Hollywood Private Hospital | Edmondson M.,University of Western Australia | Ebert J.,Perth Bone and Tissue Bank | And 8 more authors.
Journal of Orthopaedics | Year: 2014

Aims: To accurately assess subsidence, rotation and clinical scores in two cementless femoral stems. Methods: 260 patients received either K2 or Apex femoral stems and were studied over 2y, with RSA and clinical scores. Results: Mean Oxford Hip score for both stems was excellent (45.78 and 46.76). Very little subsidence or rotation were noted on RSA in either stem. There were no statistically significant differences in clinical scores, or radiological motion between stems. Revision rate was 0.8% over the study period. Conclusion: Excellent clinical and RSA scores over the 2y study period predict good long term outcomes for these stems. © 2014 .


Gardner E.M.H.,Perth Bone and Tissue Bank | Vonderheide N.,Perth Bone and Tissue Bank | Fisher R.,Perth Bone and Tissue Bank | Brooker G.,Perth Bone and Tissue Bank | Yates P.J.,Perth Bone and Tissue Bank
Cell and Tissue Banking | Year: 2013

Bacterial contamination of tendon allografts at the completion of processing has historically been about 2 %, with tendons that are found to be culture positive being discarded. Treatment of tendon allograft with hydrogen peroxide at the beginning of tissue processing may reduce bacterial contamination, however, the potential side effects of hydrogen peroxide treatment include hydrolysis of the collagen and this may alter the mechanical properties of the graft. Pairs of human tendons were used. One was washed in 3 % hydrogen peroxide for 5 min and the untreated tendon was used as a control. The ultimate tensile strength of the tendons was determined using a material testing machine. A freeze clamp technique was used to hold the tendons securely at the high loads required to cause tendon failure. There was no statistical difference in the ultimate tensile strength between the treated and untreated tendons. Mean strength ranged from Extensor Hallucis Longus at 588 Newtons to Tibialis Posterior at 2,366 Newtons. Hydrogen peroxide washing may reduce bacterial contamination of tendon allograft and does not affect the strength of the tendon. © 2013 Springer Science+Business Media Dordrecht.

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