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Original article
Available online 15 October 2024
Connective tissue amyloidosis in patients referred for orthopedic surgery. CONNECT-AMY study
Amiloidosis del tejido conectivo en pacientes referidos a cirugía ortopédica. Estudio CONNECT-AMY
Gonzalo Barge-Caballeroa,b,
Corresponding author
, Alicia Freire-Ruañoc, Alba González-Rodríguezd, Juan M. Villa-Fernándeze, Jorge Pombo-Oterof, María G. Crespo-Leiroa,b
a Unidad de Insuficiencia Cardiaca y Trasplante Cardiaco, Servicio de Cardiología, Complexo Hospitalario Universitario A Coruña, A Coruña, Spain
b Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
c Servicio de Traumatología, Complexo Hospitalario Universitario A Coruña, A Coruña, Spain
d Servicio de Cirugía Plástica, Complexo Hospitalario Universitario A Coruña, A Coruña, Spain
e Servicio de Neurocirugía, Complexo Hospitalario Universitario A Coruña, A Coruña, Spain
f Servicio de Anatomía Patológica, Complexo Hospitalario Universitario A Coruña, A Coruña, Spain
Received 29 August 2023. Accepted 08 July 2024
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Table 1. Baseline patient characteristics.
Table 2. Detailed description of baseline characteristics and cardiac assessment of patients with connective tissue amyloidosis.
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Abstract
Introduction and objective

Clinical manifestations secondary to amyloid deposition in connective tissue may allow early detection of amyloidosis. We sought to identify the prevalence of connective tissue amyloidosis in patients undergoing orthopedic surgery and evaluate for cardiac involvement.

Material and methods

Descriptive cross-sectional study that included patients >50 years referred for orthopedic surgery at our center. A sample of the affected connective tissue was taken during the intervention to evaluate the presence of amyloid material. Those with confirmed amyloidosis were further evaluated with complementary tests for cardiac involvement.

Results

Forty-eight patients were included. Mean age was 65.4 years and 41.7% were women. The most frequent surgery was supraspinatus tendon rupture (50%). Transthyretin amyloid deposits were detected in 2 patients (4.2%). The absence of variants in the protein gene established the diagnosis of ATTRwt in both cases. None of them presented cardiac involvement.

Conclusions

In this study, 4.2% of patients referred for orthopedic surgery presented transthyretin amyloidosis in the affected connective tissue.

Keywords:
Amyloidosis
Transthyretin
ATTR
Connective tissue
Orthopedic surgery
Resumen
Introducción y objetivo

Las manifestaciones clínicas secundarias al depósito de amiloide en el tejido conectivo pueden permitir la detección precoz de amiloidosis. Nos planteamos conocer la prevalencia de amiloidosis de tejido conectivo en los pacientes referidos para cirugía ortopédica, y evaluar la coexistencia de afectación cardiaca.

Material y métodos

Estudio transversal descriptivo que incluyó a pacientes > 50 años referidos para cirugía ortopédica en nuestro centro. Se les tomó una muestra del tejido conectivo afectado durante la intervención para analizar la presencia de material amiloide. En los casos con amiloidosis se realizaron pruebas complementarias para evaluar la presencia de afectación cardiaca.

Resultados

Se incluyeron 48 pacientes con una edad media de 65,4 años, siendo un 41,7% mujeres. La cirugía más frecuente fue la rotura del tendón del supraespinoso (50%). Se detectaron depósitos de amiloide por transtiretina en 2 pacientes (4,2%). La ausencia de variantes en el gen de la proteína estableció en ambos casos el diagnóstico de ATTRwt. Ninguno de ellos presentó afectación cardiaca.

Conclusiones

Un 4,2% de los pacientes referidos para cirugía ortopédica presentó amiloidosis por transtiretina en el tejido conectivo afectado.

Palabras clave:
Amiloidosis
Transtiretina
ATTR
Tejido conectivo
Cirugía ortopédica

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