Talar component subsidence correlates with periprosthetic osteolysis after total ankle arthroplasty.

Abstract

PURPOSE:

This 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).

METHODS:

This 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.

RESULTS:

The 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).

CONCLUSION:

In the O group, a positive correlation between osteolysis and talar component subsidence was found, and five patients required revision surgery.

• Authors: Shinsuke Kihara, Noriyuki Kanzaki, Takahiro Yamashita, Tetsuya Yamamoto, Kyohei Nishida, Kanto Nagai, Daisuke Araki, Yuichi Hoshino, Takehiko Matsushita, Ryosuke Kuroda
• Journal: European journal of orthopaedic surgery & traumatology : orthopedie traumatologie (Eur J Orthop Surg Traumatol) Vol. 33 Issue 7 Pg. 2987-2993 (Oct 2023) ISSN: 1432-1068 [Electronic] France
• PMID: 36930269 (Publication Type: Journal Article)
• Copyright: © 2023. The Author(s).

Topics

• Humans
• Ankle (surgery)
• Osteolysis (diagnostic imaging, etiology, surgery)
• Retrospective Studies
• Radiography
• Arthroplasty, Replacement, Ankle (adverse effects)
• Joint Prosthesis (adverse effects)
• Ankle Joint (diagnostic imaging, surgery)
• Reoperation