Study of femoral component malrotation as a cause of pain after total knee arthroplasty

G Grillo; X Pelfort; M Balaguer-Castro; J R Amillo; N Carbó; J M Peñalver; C Yela-Verdú

doi:10.1016/j.recot.2023.02.010

Study of femoral component malrotation as a cause of pain after total knee arthroplasty

Rev Esp Cir Ortop Traumatol. 2023 Mar 2:S1888-4415(23)00075-9. doi: 10.1016/j.recot.2023.02.010. Online ahead of print.

[Article in English, Spanish]

Authors

G Grillo¹, X Pelfort², M Balaguer-Castro³, J R Amillo⁴, N Carbó², J M Peñalver², C Yela-Verdú⁵

Affiliations

¹ Università Cattolica del Sacro Cuore, Roma, Italia.
² Unidad de Cirugía de Rodilla, Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario Parc Taulí, Sabadell, Barcelona, España; Insitut d'Investigació i Innovació I3PT, Hospital Universitario Parc Taulí, Sabadell, Barcelona, España; Universidad Autónoma de Barcelona, Barcelona, España.
³ Servicio de Cirugía Ortopédica y Traumatología, Hospital Clínic, Barcelona, España.
⁴ Servicio de Cirugía Ortopédica y Traumatología, Hospital de Viladecans, Viladecans, Barcelona, España.
⁵ Unidad de Cirugía de Rodilla, Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario Parc Taulí, Sabadell, Barcelona, España; Insitut d'Investigació i Innovació I3PT, Hospital Universitario Parc Taulí, Sabadell, Barcelona, España; Universidad Autónoma de Barcelona, Barcelona, España. Electronic address: cpyela@tauli.cat.

PMID: 36868373
DOI: 10.1016/j.recot.2023.02.010

Abstract

Introduction: The total knee arthroplasty (TKA) has been shown to be a successful and cost-benefit procedure in terms of pain improvement in patient with symptomatic knee osteoarthritis. However, almost a 20% of the patients are not satisfied with the result of the surgery.

Material and method: We have carried out a transversal unicentric cases controls study with clinical cases of the own hospital, obtained by a clinical records revision. A total of 160 patients with a TKA with at least 1year of follow-up were selected. Demographic variables, functional scales (WOMAC and VAS) and rotation of the femoral component through the analysis of the images obtained by CT scan were collected.

Results: The total was 133 patients that was divided in two groups. A control group and pain group. The control group was made up of 70 patients with a mean age of 69.59years (23 men and 47 women) and the pain group was made up of 63 patients with a mean age of 69.48years (13 men and 50 women). We did not found difference regarding the analysis of the rotation of the femoral component. In addition, we were not found significant differences when applying a stratification by sex. The analysis of the malrotation of the femoral component, previously defining limits of value rotation considered as extreme, in any of the case did not show significant differences.

Conclusion: The results of the study confirm that malrotation of the femoral component had no influence on the presence of pain at a minimum of one year of follow-up after TKA implantation.

Keywords: Arthroplasty; Artroplastia; Dolor; Femoral component rotation; Malrotación; Malrotation; Pain; Painful total knee arthroplasty; Prótesis de rodilla dolorosa; Rotación del componente femoral.