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Prediction of wear performance in femoral and tibial conformity in patient-specific cruciate-retaining total knee arthroplasty.
Koh, Yong-Gon; Park, Kyoung-Mi; Lee, Hwa-Yong; Park, Joon-Hee; Kang, Kyoung-Tak.
Afiliação
  • Koh YG; Joint Reconstruction Center, Department of Orthopaedic Surgery, Yonsei Sarang Hospital, 10 Hyoryeong-ro, Seocho-gu, Seoul, 06698, Republic of Korea.
  • Park KM; Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
  • Lee HY; Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
  • Park JH; Department of Anesthesiology & Pain Medicine, Hallym University College of Medicine and Kangdong Sacred Heart Hospital, 150 Seongan-ro, Gangdong-gu, Seoul, 05355, Republic of Korea. anjhpark@gmail.com.
  • Kang KT; Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea. tagi1024@gmail.com.
J Orthop Surg Res ; 15(1): 24, 2020 Jan 22.
Article em En | MEDLINE | ID: mdl-31969195
BACKGROUND: Articular surface curvature design is important in tibiofemoral kinematics and the contact mechanics of total knee arthroplasty (TKA). Thus far, the effects of articular surface curvature have not been adequately discussed with respect to conforming, nonconforming, and medial pivot designs in patient-specific TKA. Therefore, this study evaluates the underlying relationship between the articular surface curvature geometry and the wear performance in patient-specific TKA. METHODS: We compare the wear performances between conventional and patient-specific TKA under gait loading conditions using a computational simulation. Patient-specific TKAs investigated in the study are categorized into patient-specific TKA with conforming articular surfaces, medial pivot patient-specific TKA, and bio-mimetic patient-specific TKA with a patient's own tibial and femoral anatomy. The geometries of the femoral components in patient-specific TKAs are identical. RESULTS: The anterior-posterior and internal-external kinematics change with respect to different TKA designs. Moreover, the contact pressure and area did not directly affect the wear performance. In particular, conforming patient-specific TKAs exhibit the highest volumetric wear and wear rate. The volumetric wear in a conforming patient-specific TKA is 29% greater than that in a medial pivot patient-specific TKA. CONCLUSION: The findings in this study highlight that conformity changes in the femoral and tibial inserts influence the wear performance in patient-specific TKA. Kinematics and contact parameters should be considered to improve wear performance in patient-specific TKA. The conformity modification in the tibiofemoral joint changes the kinematics and contact parameters, and this affects wear performance.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Desenho de Prótese / Artroplastia do Joelho / Medicina de Precisão / Prótese do Joelho / Modelos Teóricos Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Desenho de Prótese / Artroplastia do Joelho / Medicina de Precisão / Prótese do Joelho / Modelos Teóricos Idioma: En Ano de publicação: 2020 Tipo de documento: Article