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Journal of Bone and Joint Surgery - British Volume, Vol 85-B, Issue 8, 1123-1127.
doi: 10.1302/0301-620X.85B8.13836  
Copyright © 2003 by British Editorial Society of Bone and Joint Surgery
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Fixation of a hydroxyapatite-tricalcium phosphate-coated cementless knee prosthesis

CLINICAL AND RADIOGRAPHIC EVALUATION SEVEN YEARS AFTER SURGERY

S. Akizuki, MD, PhD, Clinical Professor and Chief Orthopaedic Surgeon; T. Takizawa, MD, PhD, Chief Orthopaedic Surgeon; and H. Horiuchi, MD, PhD, Clinical Fellow

Department of Orthopaedic Surgery, Nagano Matsushiro General Hospital, 183 Matsushiro, Nagano City 381-1231, Japan.

Correspondence should be sent to Professor S. Akizuki.

Miller-Galante II total knee arthroplasty (MG II TKA) was performed on 32 knees in 30 patients. On both the femoral and tibial components, the fibre-metal area was plasma-sprayed with hydroxyapatite-tricalcium phosphate (HA-TCP). The clinical and radiographic outcome was evaluated. A mean pre-operative knee score of 26.0 ± 18.6 (SD) increased to 97.5 ± 3.5 and a mean pre-operative functional score of 21.7 ± 15.0 (SD) increased to 83.4 ± 12.4 at follow-up of seven years. Clear zones were common around the components at one month post-operatively but had completely disappeared after six months. An autopsy of a patient who underwent MG II TKA with HA-TCP two years previously, showed osteogenesis in all parts of the fibre-metal, and bone tissue comprised 77.7% of the interface. This coated prosthesis has good early fixation which is maintained at seven years with good clinical and radiographic outcomes.




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J. Uvehammer, J. Karrholm, and L. Carlsson
Cemented versus hydroxyapatite fixation of the femoral component of the Freeman-Samuelson total knee replacement: A RADIOSTEREOMETRIC ANALYSIS
J Bone Joint Surg Br, January 1, 2007; 89-B(1): 39 - 44.
[Abstract] [Full Text] [PDF]


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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General