Anterior Position of the Femoral Condyle During Mid-Flexion Worsens Knee Activity After Cruciate-Retaining Total Knee Arthroplasty.
J Arthroplasty
; 39(8S1): S230-S236, 2024 Aug.
Article
en En
| MEDLINE
| ID: mdl-38350519
ABSTRACT
BACKGROUND:
The effects of kinematics on patient-reported outcome measures (PROMs) after cruciate-retaining (CR) total knee arthroplasty (TKA) remain unclear. This study investigated the effects of kinematic patterns after CR-TKA on PROMs.METHODS:
We examined 35 knees (27 patients) undergoing primary CR-TKA. Knee kinematics and 2011 Knee Society Score were evaluated at a mean follow-up of 72.4 (± 28.2) months. Knee kinematics was analyzed using fluoroscopy, and the femoral antero-posterior position relative to the tibial component was assessed separately for medial and lateral compartments during a squat. The correlations between kinematics and PROMs were evaluated.RESULTS:
The average amount of posterior femoral translation from full extension to maximum flexion was 0.2 (± 2.6) mm for the medial femoral condyle and 4.1 (± 2.9) mm for the lateral condyle. Medial pivot motion was observed in 24 knees (68.6%) with a low rate (14.3%) of paradoxical anterior translation. The anterior position of the medial femoral condyle at 60° had a negative impact on discretionary activities (ρ = -0.37; P = .039), and at maximum flexion, had a negative impact on total functional activities (ρ = -0.46; P = .005), advanced activities (ρ = -0.45; P = .006), and discretionary activities (ρ = -0.63; P < .001). Anterior position of the lateral femoral condyle at 30° had a negative impact on total functional activities (ρ = -0.48; P = .005), walking and standing (ρ = -0.56; P < .001), and advanced activities (ρ = -0.49; P = .004), and at 60° had a negative impact on walking and standing (ρ = -0.45; P = .010).CONCLUSIONS:
The anterior positions of the medial and lateral femoral condyles at mid-flexion and maximum flexion had negative impacts on PROMs. Soft tissue conditions should be carefully managed to achieve medial knee joint stability, which can improve PROMs.Palabras clave
Texto completo:
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Banco de datos:
MEDLINE
Asunto principal:
Rango del Movimiento Articular
/
Artroplastia de Reemplazo de Rodilla
/
Fémur
/
Articulación de la Rodilla
Límite:
Aged
/
Aged80
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Año:
2024
Tipo del documento:
Article