12-year survival analysis of 322 Hintegra total ankle arthroplasties from an independent center
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
12-year survival analysis of 322 Hintegra total ankle arthroplasties from an independent center. / Zafar, Mina Jane; Kallemose, Thomas; Benyahia, Mostafa; Ebskov, Lars Bo; Penny, Jeannette Østergaard.
In: Acta Orthopaedica, Vol. 91, No. 4, 2020, p. 444-449.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - 12-year survival analysis of 322 Hintegra total ankle arthroplasties from an independent center
AU - Zafar, Mina Jane
AU - Kallemose, Thomas
AU - Benyahia, Mostafa
AU - Ebskov, Lars Bo
AU - Penny, Jeannette Østergaard
PY - 2020
Y1 - 2020
N2 - Background and purpose — Total ankle arthroplasties (TAAs) have larger revision rates than hip and knee implants. We examined the survival rates of our primary TAAs, and what different factors, including the cause of arthritis, affect the success and/or revision rate. Patients and methods — From 2004 to 2016, 322 primary Hintegra TAAs were implanted: the 2nd generation implant from 2004 until mid-2007 and the 3rd generation from late 2007 to 2016. A Cox proportional hazards model evaluated sex, age, primary diagnosis, and implant generation, pre- and postoperative angles and implant position as risk factors for revision. Results — 60 implants (19%) were revised, the majority (n = 34) due to loosening. The 5-year survival rate (95% CI) was 75% (69–82) and the 10-year survival rate was 68% (60–77). There was a reduced risk of revision, per degree of increased postoperative medial distal tibial angle at 0.84 (0.72–0.98) and preoperative talus angle at 0.95 (0.90–1.00), indicating that varus ankles may have a larger revision rate. Generation of implant, sex, primary diagnosis, and most pre- and postoperative radiological angles did not statistically affect revision risk. Interpretation — Our revision rates are slightly above registry rates and well above those of the developer. Most were revised due to loosening; no difference was demonstrated with the 2 generations of implant used. Learning curve and a low threshold for revision could explain the high revision rate.
AB - Background and purpose — Total ankle arthroplasties (TAAs) have larger revision rates than hip and knee implants. We examined the survival rates of our primary TAAs, and what different factors, including the cause of arthritis, affect the success and/or revision rate. Patients and methods — From 2004 to 2016, 322 primary Hintegra TAAs were implanted: the 2nd generation implant from 2004 until mid-2007 and the 3rd generation from late 2007 to 2016. A Cox proportional hazards model evaluated sex, age, primary diagnosis, and implant generation, pre- and postoperative angles and implant position as risk factors for revision. Results — 60 implants (19%) were revised, the majority (n = 34) due to loosening. The 5-year survival rate (95% CI) was 75% (69–82) and the 10-year survival rate was 68% (60–77). There was a reduced risk of revision, per degree of increased postoperative medial distal tibial angle at 0.84 (0.72–0.98) and preoperative talus angle at 0.95 (0.90–1.00), indicating that varus ankles may have a larger revision rate. Generation of implant, sex, primary diagnosis, and most pre- and postoperative radiological angles did not statistically affect revision risk. Interpretation — Our revision rates are slightly above registry rates and well above those of the developer. Most were revised due to loosening; no difference was demonstrated with the 2 generations of implant used. Learning curve and a low threshold for revision could explain the high revision rate.
U2 - 10.1080/17453674.2020.1751499
DO - 10.1080/17453674.2020.1751499
M3 - Journal article
C2 - 32285738
AN - SCOPUS:85083874266
VL - 91
SP - 444
EP - 449
JO - Acta Orthopaedica
JF - Acta Orthopaedica
SN - 1745-3674
IS - 4
ER -
ID: 258326494