Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement

H. Koivu; I. Kohonen; E. Sipola; K. Alanen; T. Vahlberg; H. Tiusanen

doi:10.1302/0301-620X.91B7.22434

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Foot & Ankle

Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement

H. Koivu
I. Kohonen
E. Sipola
K. Alanen
T. Vahlberg
H. Tiusanen

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Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement

Koivu H, Kohonen I, Sipola E, Alanen K, Vahlberg T, Tiusanen H. Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement. J Bone Joint Surg Br. 2009;91-B(7):907-914. doi:10.1302/0301-620X.91B7.22434

Koivu, H., et al. “Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement.” The Journal of Bone & Joint Surgery British Volume, vol. 91-B, no. 7, 2009, pp. 907-914., https://doi.org/10.1302/0301-620X.91B7.22434

Koivu, H., Kohonen, I., Sipola, E., Alanen, K., Vahlberg, T., & Tiusanen, H. (2009). Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement. The Journal of Bone & Joint Surgery British Volume, 91-B(7), 907-914. https://doi.org/10.1302/0301-620X.91B7.22434

Koivu, H., Kohonen, I., Sipola, E., Alanen, K., Vahlberg, T. and Tiusanen, H. (2009) “Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement.” The Journal of Bone & Joint Surgery British Volume, 91-B(7), pp. 907-914. Available at: https://doi.org/10.1302/0301-620X.91B7.22434

Koivu, H., I. Kohonen, E. Sipola, K. Alanen, T. Vahlberg, and H. Tiusanen. “Severe periprosthetic osteolytic lesions after the Ankle Evolutive System total ankle replacement.” The Journal of Bone & Joint Surgery British Volume 91-B, no. 7 (2009): 907-914. https://doi.org/10.1302/0301-620X.91B7.22434

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Abstract

Between 2002 and 2008, 130 consecutive ankles were replaced with an hydroxyapatite (HA) and titanium-HA-coated Ankle Evolutive System total ankle prosthesis. Plain radiographs were analysed by two independent observers. Osteolytic lesions were classified by their size and location, with cavities > 10 mm in diameter considered to be ‘marked’. CT scanning was undertaken in all patients with marked osteolysis seen on the plain radiographs.

Osteolytic lesions were seen on the plain films in 48 (37%) and marked lesions in 27 (21%) ankles. The risk for osteolysis was found to be 3.1 (95% confidence interval 1.6 to 5.9) times higher with implants with Ti-HA porous coating.

Care should be taken with ankle arthroplasty until more is known about the reasons for these severe osteolyses.

Correspondence should be sent to Dr H. Tiusanen; e-mail: hannu.tiusanen@pp.inet.fi

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