Purpose The aim of the present study was to compare the in vivo under weight-bearing kinematic behavior of a posterior-stabilized (PS) and an ultra-congruent (UC) total knee arthroplasty (TKA) model during a sit-to-stand motor task, a common activity of daily life. Methods A cohort of 16 randomly selected patients (8 PS Persona Zimmer, 8 UC Persona Zimmer) was evaluated through dynamic radiostereometric analysis (RSA) at a minimum of 9 months after TKA, during the execution of a sit-to-stand. The anteroposterior (AP) translation of the femoral component and the AP translation of the low point of medial and lateral femoral compartments were compared through Student’s t test (p< 0.05). Results A significantly greater anterior translation of the femoral component was found for the PS group compared to the UC group. The flexion interval where statistical significance was found was between 30 and 0 (p= 0.017 …
In vivo kinematic comparison between an ultra-congruent and a posterior-stabilized total knee arthroplasty design by RSA / Roberti di Sarsina, Tommaso; Alesi, Domenico; Di Paolo, Stefano; Zinno, Raffaele; Pizza, Nicola; Marcheggiani Muccioli, Giulio Maria; Zaffagnini, Stefano; Bragonzoni, Laura. - In: KNEE SURGERY, SPORTS TRAUMATOLOGY, ARTHROSCOPY. - ISSN 0942-2056. - STAMPA. - 1:(2021), pp. 1-6. [10.1007/s00167-021-06629-1]
In vivo kinematic comparison between an ultra-congruent and a posterior-stabilized total knee arthroplasty design by RSA
Roberti di Sarsina, Tommaso;Alesi, Domenico
;Di Paolo, Stefano;Zinno, Raffaele;Pizza, Nicola;Marcheggiani Muccioli, Giulio Maria;Zaffagnini, Stefano;Bragonzoni, Laura
2021
Abstract
Purpose The aim of the present study was to compare the in vivo under weight-bearing kinematic behavior of a posterior-stabilized (PS) and an ultra-congruent (UC) total knee arthroplasty (TKA) model during a sit-to-stand motor task, a common activity of daily life. Methods A cohort of 16 randomly selected patients (8 PS Persona Zimmer, 8 UC Persona Zimmer) was evaluated through dynamic radiostereometric analysis (RSA) at a minimum of 9 months after TKA, during the execution of a sit-to-stand. The anteroposterior (AP) translation of the femoral component and the AP translation of the low point of medial and lateral femoral compartments were compared through Student’s t test (p< 0.05). Results A significantly greater anterior translation of the femoral component was found for the PS group compared to the UC group. The flexion interval where statistical significance was found was between 30 and 0 (p= 0.017 …I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
