GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP

A. Harris; B. Christen; J. Malcorps; C. O'Grady; P. Sensiba; H. Vandenneucker; B. Huang; H. Cates; J. Hur; D. Marra; B. Kopjar

doi:10.1302/1358-992X.2020.1.095

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General Orthopaedics

GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP

International Society for Technology in Arthroplasty (ISTA) meeting, 32nd Annual Congress, Toronto, Canada, October 2019. Part 1 of 2.

A. Harris
B. Christen
J. Malcorps
C. O'Grady
P. Sensiba
H. Vandenneucker
B. Huang
H. Cates
J. Hur
D. Marra
B. Kopjar

GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP

Harris A, Christen B, Malcorps J, et al. GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP. Orthop Procs. 2020;102-B(SUPP_1):95-95. doi:10.1302/1358-992X.2020.1.095

Harris, A., et al. “GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP.” Orthopaedic Proceedings, vol. 102-B, no. SUPP_1, 2020, pp. 95-95., https://doi.org/10.1302/1358-992X.2020.1.095

Harris, A., Christen, B., Malcorps, J., O'Grady, C., Sensiba, P., Vandenneucker, H., Huang, B., Cates, H., Hur, J., Marra, D., & Kopjar, B. (2020). GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP. Orthopaedic Proceedings, 102-B(SUPP_1), 95-95. https://doi.org/10.1302/1358-992X.2020.1.095

Harris, A., Christen, B., Malcorps, J., O'Grady, C., Sensiba, P., Vandenneucker, H. et al. (2020) “GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP.” Orthopaedic Proceedings, 102-B(SUPP_1), pp. 95-95. Available at: https://doi.org/10.1302/1358-992X.2020.1.095

Harris, A., B. Christen, J. Malcorps, C. O'Grady, P. Sensiba, H. Vandenneucker, B. Huang, et al. “GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP.” Orthopaedic Proceedings 102-B, no. SUPP_1 (2020): 95-95. https://doi.org/10.1302/1358-992X.2020.1.095

Harris A, Christen B, Malcorps J, O'Grady C, Sensiba P, Vandenneucker H, et al. GUIDED MOTION TOTAL KNEE ARTHROPLASTY IN PATIENTS WITH BODY MASS INDEX OF 40 KG/M2 OR MORE: RESULTS FROM THE INTERNATIONAL MULTICENTRE STUDY OF 2,059 PRIMARY TOTAL KNEE ARTHROPLASTIES WITH UP TO SIX YEARS’ FOLLOW-UP. Orthop Procs. 2020 Feb 1;102-B(SUPP_1):95-95. https://doi.org/10.1302/1358-992X.2020.1.095

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Abstract

Introduction/Aim

Outcomes for guided motion primary total knee arthroplasty (TKA) in obese patients are unknown.

Materials and Methods

1,684 consecutive patients underwent 2,059 primary TKAs with a second-generation guided motion implant (Journey II Bi-Cruciate Stabilized Knee System, Smith & Nephew, Inc., Memphis) between 2011–2017 at three European and seven US sites.

Results

Of 2,003 (97.3%) TKAs in 1,644 patients with BMI data: average age 64.5 years; 58.4% females; average BMI 32.5 kg/m²;13.4% had BMI ≥ 40 kg/m². Subjects with BMI ≥ 40 kg/m² had longest length of hospital stay (LOS) at European sites; LOS similar at US sites. Subjects with BMI ≥ 40 kg/m² (P=0.0349) had longest surgery duration. BMI ≥ 40 kg/m² had more re-hospitalizations or post-TKA reoperations than BMI < 40 kg/m² (12.7% and 9.2% at five-year post-TKA, P<.0495). 62 TKAs were revised (3.39/100 TKA at five years) with no differences in revision risk between groups. 17 (27.4%) revisions involved femoral or tibial component removal; 45 (72.6%) involved tibial insert or patellar component removal only with revision risk similar between groups.