Journal
EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY
Volume 33, Issue 7, Pages 2987-2993Publisher
SPRINGERNATURE
DOI: 10.1007/s00590-023-03519-9
Keywords
Ankle osteoarthritis; Total ankle arthroplasty; Osteolysis; Component subsidence
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The study aimed to investigate the relationship between periprosthetic osteolysis around the talar component and talar component subsidence after total ankle arthroplasty. The results showed a positive correlation between osteolysis and talar component subsidence, and some patients required revision surgery.
PurposeThis study aimed to investigate the relationship between periprosthetic osteolysis around the talar component and the amount of talar component subsidence after total ankle arthroplasty (TAA).MethodsThis study included forty patients who underwent TAA with a mean follow-up of 67.5 +/- 17.0 months. The patients were divided into two groups based on the amount of osteolysis around the talar component, as measured by computed tomography at the latest clinic visit: none to 2 mm (N group, n = 20) and greater than or equal to 2 mm (O group, n = 20). The average amount of talar component subsidence, clinical outcomes, and complications were compared between the two groups. In the O group, the correlation between osteolysis and talar component subsidence was evaluated.ResultsThe average talar component subsidence was significantly different between the N (0.22 +/- 0.94 mm) and O groups (2.12 +/- 2.28 mm). Five out of 20 ankles in the O group required revision surgery owing to talar component subsidence. The Japanese Society for Surgery of the Foot scores in the N and O groups were significantly different: 93.5 +/- 7.7 and 85.3 +/- 15.4, respectively. In the O group, we found that osteolysis tended to develop on the lateral side, and the amount of osteolysis was positively correlated with the talar component subsidence (r = 0.59, P = .007).ConclusionIn the O group, a positive correlation between osteolysis and talar component subsidence was found, and five patients required revision surgery.
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