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Fixed-Bearing Trabecular Metal Total Ankle Arthroplasty Using the Transfibular Approach for End-Stage Ankle Osteoarthritis: An International Non-Designer Multicenter Prospective Cohort Study

Tiusanen Hannu T.; Kraus Fabian; Usuelli Federico G.; Younger Alastair; Ellington John K.; D'Ambrosi Riccardo

Fixed-Bearing Trabecular Metal Total Ankle Arthroplasty Using the Transfibular Approach for End-Stage Ankle Osteoarthritis: An International Non-Designer Multicenter Prospective Cohort Study

Tiusanen Hannu T.
Kraus Fabian
Usuelli Federico G.
Younger Alastair
Ellington John K.
D'Ambrosi Riccardo
Katso/Avaa
Fixed_Bearing_Trabecular_Metal_Total_Ankle.17.pdf (246.0Kb)
Lataukset: 

Lippincott Williams and Wilkins
doi:10.2106/JBJS.OA.21.00143
URI
https://journals.lww.com/jbjsoa/Fulltext/2022/09000/Fixed_Bearing_Trabecular_Metal_Total_Ankle.17.aspx
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Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2022112967809
Tiivistelmä

This multicenter prospective cohort study assessed the safety and performance of the Trabecular Metal Total Ankle System (TM Ankle; Zimmer) for primary total ankle arthroplasty (TAA).

Methods: One hundred and twenty-one consecutive patients qualifying for primary TAA were enrolled in the study. All patients received the TM Ankle implant. Clinical outcome examinations and radiographic evaluations were conducted at 6 weeks, 6 months, 1 year, 2 years, and 3 years. Patient-reported outcome measures (PROMs) were evaluated with use of the EuroQol-5 Dimensions questionnaire (EQ-5D), Ankle Osteoarthritis Scale (AOS), American Orthopaedic Foot & Ankle Society questionnaire (AOFAS), and patient satisfaction at each time point. Complications were classified according to the Canadian Orthopaedic Foot and Ankle Society (COFAS) system.

Results: The average AOFAS, EQ-5D, AOS pain, and AOS difficulty scores showed significant improvement at 6 weeks, 6 months, 1 year, 2 years, and 3 years as compared with the preoperative baseline (p < 0.001). The Kaplan-Meier survival estimate for revision when used in primary cases was 97.35% at 3 years. During the 3 years of follow-up, 9 patients showed abnormal radiographic findings. Two ankles had intraoperative complications, 38 had complications that were non-surgical or device-related, and 3 ankles underwent revision.

Conclusions: The results of the present study indicated that patient well-being significantly increased following TAA with use of the TM Ankle. Radiographic parameters also demonstrated a low incidence of abnormal findings.

Level of evidence: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

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