Clinico-radiological results in the alignment of prosthetic components after knee arthroplasties. A single-center observational study.

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Hugo Ernesto Villarroel Rovere
Carlos Alberto Jaramillo Becerra
Carlos Jacinto Valle Ochoa
Andrea Adrián

Abstract

Introduction: The complex biomechanics of the knee make it challenging to achieve a result close to natural anatomy after arthroplasty. The size and positioning of the implant affect the postoperative outcome, so its malrotation leads to weakness, instability, and loosening. The study's objective was to determine the angles of rotational alignment of the prosthesis, about the clinical-functional results of the prosthesis.


Methods: The present observational study was conducted at the Alcívar Hospital in Guayaquil, Ecuador, from 2021 to 2022 with patients with knee arthroplasty. The variables were sex, age, axis of rotation, and functional and clinical results. The sample was non-probabilistic. Descriptive statistics were used.


Results: 46 cases were studied, 52.2% women, with an average age of 68.9. 78.3% presented varus deformity, with an average shortening of 14.78 mm. A significant correction of the deviation was evidenced with angles a, b, c, d, within normal parameters at 94.3%, 90.7%, 91.4%, and 88.6%, respectively. Additionally, an average internal rotation of the femoral component of 3.42 and tibial component of 25.84 degrees was obtained, with effectiveness in surgical technique of 47.8 and 23.9%, respectively.


Conclusions: 2D CT is a very reliable tool to identify the degree of effective functional rotation of the limb. No complications related to mechanical loosening were reported.

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How to Cite
Clinico-radiological results in the alignment of prosthetic components after knee arthroplasties.: A single-center observational study. (2023). Actas Médicas (Ecuador), 33(1), 17-26. https://doi.org/10.61284/26
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Original Research
Author Biographies

Hugo Ernesto Villarroel Rovere, Servicio de Traumatología, Hospital Alcívar, Guayaquil

Especialista en Traumatología y Ortopedia por la Universidad De Guayaquil (Guayaquil, 2004). Doctor en Medicina y Cirugía por la Universidad De Guayaquil. Médico Ortopedista-Traumatólogo, Miembro del equipo y director del postgrado de Ortopedia y Traumatología, Hospital Alcívar, Guayaquil, Ecuador. Correo: villarroelr@hotmail.com

ORCID: 0000-0002-0847-0344

Carlos Alberto Jaramillo Becerra, Servicio de Traumatología, Hospital Alcívar, Guayaquil

Médico por la Universidad Nacional de Loja (Loja, 2002). Especialista en traumatología y ortopedia por la Universidad de Guayaquil (Guayaquil, 2013). Alta especialidad en medicina> Atención médica y quirúrgica de los padecimientos de la columna vertebral por la Universidad Nacional Autómona de México, (Distrito Federal, 2017). Jefe, Servicio de Ortopedia y Traumatología, Hospital Alcívar, Guayaquil, Ecuador.

Carlos Jacinto Valle Ochoa , Servicio de Imagenología, Hospital Alcívar, Guayaquil

Doctor en medicina y cirugía por la Universidad de Guayaquil (Guayaquil, 2002), Especialista en Imagenología por la Universidad de Guayaquil (2007). Miembro del equipo y director técnico del servicio de Imagenología, Hospital Alcívar, Guayaquil, Ecuador.

Andrea Adrián, Servicio de Traumatología, Hospital Alcívar, Guayaquil.

Médico Residente de Traumatología y Ortopedia, Hospital Alcívar, Guayaquil, Ecuador

How to Cite

Clinico-radiological results in the alignment of prosthetic components after knee arthroplasties.: A single-center observational study. (2023). Actas Médicas (Ecuador), 33(1), 17-26. https://doi.org/10.61284/26

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