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KMID : 0386720020140020073
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Journal of the Korean Hip Society
2002 Volume.14 No. 2 p.73 ~ p.82
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The Effect of Hydroxyapatite and Tricalcium-PhosphateCoating on Titanium Fiber-Mesh Stem -minium 5-year follow-up-
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Yoon Kang-Sup
Kang Seung-Baik
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Abstract
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Purpose: The effect of hydroxyapatite and tricalcium-phosphate (HA/TCP) coating on titanium fiber-mesh stem was assessed through comparative study between an Ha/TCP coated group and an uncoated group, both followed up for more than 5 years.
Materials and Methods: Hydroxyapatite and tricalcium-phosphate (HA/TCP CalcicoatTM) coated titanium fiber-mesh stems were used in 26 cases and identical components without hydroxyapatite coating were used in 21 cases. The distribution of the patients between the two groups showed no statistical differences.
Results: At the time of 5 year postoperative follow-up, the mean Harris hip score and the Engh’s radiographic assessment score were 95.4 and 19.2 in the HA/TCP CalcicoatTM group, and 94.8 and 18.3 in the uncoated group, respectively. None of these differences were statistically signigicant. At 3 months after th eoperation, the frequency of thigh pain was 7.7% in the HA/TCP CalcicoatTM group and 19% in the uncoated group, which also was not significantly different (p=0.24). No differences in any of Engh’s radiographic assessment criteria between the two groups were detected throughout the follow-up period.
Conclusion: While there seemed to be a tendency toward earlier pain relief and more endosteal new bone formation in the HA/TCP CalcicoatTMgroup, the clinical and radiographic differences were not statistically significant. A longer follow-up study would be required to uncover any hidden advantages of the HA/TCP alcicoatTM coating on titanium fiber-mesh stem.
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KEYWORD
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Total hip arthroplasty, Hydeoxyapatite, Tricalcium-phosphate
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