Patella component diameters of 38 mm and up might be associated with higher revision rates after patella resurfacing
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Patella component diameters of 38 mm and up might be associated with higher revision rates after patella resurfacing. / Jungwirth-Weinberger, Anna; List, Kilian; Bechler, Ulrich; Hanreich, Carola; Rueckl, Stefan; Boettner, Friedrich.
in: J ORTHOP SURG RES, Jahrgang 18, Nr. 1, 28.04.2023, S. 325.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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T1 - Patella component diameters of 38 mm and up might be associated with higher revision rates after patella resurfacing
AU - Jungwirth-Weinberger, Anna
AU - List, Kilian
AU - Bechler, Ulrich
AU - Hanreich, Carola
AU - Rueckl, Stefan
AU - Boettner, Friedrich
N1 - © 2023. The Author(s).
PY - 2023/4/28
Y1 - 2023/4/28
N2 - PURPOSE: Patellar resurfacing is considered the standard of care for total knee arthroplasty in the USA. Complications of patella resurfacing include aseptic loosening or patella fractures and can threaten the integrity of the extensor mechanism. The goal of this study was to report on patella button revision rates in posterior stabilized total knee arthroplasty.MATERIAL AND METHODS: Between 01/2010 and 08/2016 patella buttons were implanted in 1056 patients (267 men and 550 women) as part of a posterior stabilized total knee arthroplasty.RESULTS: Of 1056 cases, 35 cases (14 women, 15 men, 5 bilateral, 3.3%) showed early loosening at a mean 52.5 months postoperatively. Patella components of 38 mm or larger diameters showed a significantly higher loosening rate than the 29, 32, 35 mm buttons (p < 0.01). Mean BMI of patients identified with aseptic loosening was 31.7 kg/m2, mean age at time of revision surgery was 63.3 years. All of the patients with loosening of the patella button required revision surgery; in 33 cases an exchange of the button was performed, in two cases a removal of the button and patellar bone grafting was indicated. No complications occurred after revision surgery.CONCLUSION: The current study reports a 3.3% patella loosening rate during this mid-term follow-up. Size 38 mm and larger patella components showed a significantly higher revision rate than smaller buttons and the authors advise caution when using large diameter patella components.
AB - PURPOSE: Patellar resurfacing is considered the standard of care for total knee arthroplasty in the USA. Complications of patella resurfacing include aseptic loosening or patella fractures and can threaten the integrity of the extensor mechanism. The goal of this study was to report on patella button revision rates in posterior stabilized total knee arthroplasty.MATERIAL AND METHODS: Between 01/2010 and 08/2016 patella buttons were implanted in 1056 patients (267 men and 550 women) as part of a posterior stabilized total knee arthroplasty.RESULTS: Of 1056 cases, 35 cases (14 women, 15 men, 5 bilateral, 3.3%) showed early loosening at a mean 52.5 months postoperatively. Patella components of 38 mm or larger diameters showed a significantly higher loosening rate than the 29, 32, 35 mm buttons (p < 0.01). Mean BMI of patients identified with aseptic loosening was 31.7 kg/m2, mean age at time of revision surgery was 63.3 years. All of the patients with loosening of the patella button required revision surgery; in 33 cases an exchange of the button was performed, in two cases a removal of the button and patellar bone grafting was indicated. No complications occurred after revision surgery.CONCLUSION: The current study reports a 3.3% patella loosening rate during this mid-term follow-up. Size 38 mm and larger patella components showed a significantly higher revision rate than smaller buttons and the authors advise caution when using large diameter patella components.
KW - Male
KW - Humans
KW - Female
KW - Middle Aged
KW - Patella/surgery
KW - Arthroplasty, Replacement, Knee/adverse effects
KW - Knee Prosthesis/adverse effects
KW - Bone Transplantation
KW - Reoperation
U2 - 10.1186/s13018-023-03705-9
DO - 10.1186/s13018-023-03705-9
M3 - SCORING: Journal article
C2 - 37106469
VL - 18
SP - 325
JO - J ORTHOP SURG RES
JF - J ORTHOP SURG RES
SN - 1749-799X
IS - 1
ER -