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Clinical Research
Pre-proof, online 3 March 2025
Pilot study to assess the safety and efficacy of human acellular dermal matrix for Chiari surgery
Estudio piloto para la valoración de seguridad y eficacia de la matriz dérmica acelular humana para la cirugía de Chiari
Teixidor Rodríguez Pilara,
Corresponding author
, Brugada Bellsolà Ferrana, Pérez Rodríguez Maria Luisab,c, Menéndez Girón Sebastiána, Busquets Bonet Jordid, Domínguez Alonso Carlos Javiera
a Department of Neurosurgery, Hospital Universitari Germans Trias i Pujol, Ctra del Canyet sn, CP 08916 Badalona, Barcelona, Spain
b Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Passeig Taulat, 116 08005 Barcelona, Barcelona, Spain
c Vall d’Hebron Research Institute (VHIR), Pg. de la Vall d'Hebron, 125, 08035 Barcelona, Spain
d Department of Anaesthesiology, Hospital Universitari Germans Trias i Pujol, Badalona, Barcelona, Spain
Article information
Abstract
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Abstract
Purpose

Although there may be benefits to adult patients who have had Chiari surgery when duroplasty is indicated, there are also more risks involved. The complications derived from a non-hermetic dural closure in the posterior fossa can be significant, mainly cerebrospinal fluid (CSF) leakage, meningitis and pseudomeningocele. We explored the option of utilizing a different duroplasty that we typically utilized in order to reduce these risks. The aim of this study is to assess the safety and efficacy of two duraplasties used for Chiari malformation (ChM) surgery: Tutopatch®, and a human acellular dermal matrix (hADM). Tutopatch®, a well-known collagen membrane commonly used by our senior surgeon, and hADM, prepared by the tissue establishment and with potential properties for use as duraplasty.

Methods

A unicentric prospective study was designed with one group of patients treated with hADM and another group that retrospectively acquired surgical treatment with Tutopatch®. There were nineteen patients in each group. The patients in both groups were diagnosed with same pathology and were operated on by the same senior surgeon. This study was approved by the same hospital’s Medical Ethics Committee. Demographics, clinical risk factors, clinical syndrome and pre/postoperative and postoperative events after surgery were analysed. All serious adverse events (SAEs) and adverse events (AEs) after surgery were recorded.

Results

No differences were found between the two groups related to sex, clinical risk factors, clinical syndrome and clinical outcomes. Seven patients presented with complications, seven the Tutopatch® group (two of them requiring a new reoperation) and none in the hADM group.

Conclusion

This pilot study shows that hADM is a safe and effective alternative to Tutopatch® duraplasty, as although the two materials performed equally well in the surgical repair of Chiari malformation, the former showed better clinical outcomes. Future studies are needed to confirm these outcomes in larger cohorts.

Resumen
Introducción

La cirugía de Chiari en adultos con duroplastia puede ser más beneficiosa pero a su vez también conlleva más riesgos. Las complicaciones derivadas de un cierre dural no hermético en la fosa posterior pueden ser importantes, principalmente fuga de líquido cefalorraquídeo (LCR), meningitis y pseudomeningocele. Exploramos la opción de utilizar una duroplastia diferente a la que normalmente utilizamos para reducir estos riesgos. El objetivo de este estudio es evaluar la seguridad y eficacia de dos duraplastias utilizadas para la cirugía de malformación de Chiari (ChM): Tutopatch® y una matriz dérmica acelular humana (hADM). Tutopatch®, una conocida membrana de colágeno comúnmente utilizada por nuestro cirujano senior, y hADM, preparada por el banco de tejidos y con propiedades potenciales para su uso como duraplastia.

Métodos

Se diseñó un estudio prospectivo unicéntrico con un grupo de pacientes tratados con hADM y otro grupo que adquirió retrospectivamente tratamiento quirúrgico con Tutopatch®. Había diecinueve pacientes en cada grupo. A los pacientes de ambos grupos se les diagnosticó la misma patología y fueron operados por el mismo cirujano. Este estudio fue aprobado por el Comité de Ética Médica del mismo hospital. Se analizaron datos demográficos, factores de riesgo clínico, síndrome clínico y eventos pre/postoperatorios y postoperatorios después de la cirugía. Se registraron todos los eventos adversos graves (AAG) y eventos adversos (EA) después de la cirugía.

Resultados

No se encontraron diferencias entre los dos grupos en relación con el sexo, los factores de riesgo clínicos, el síndrome clínico y los resultados clínicos. Siete pacientes presentaron complicaciones, siete del grupo Tutopatch® (dos de ellos requirieron una nueva reintervención) y ninguno del grupo hADM.

Conclusión

Este estudio piloto muestra que hADM es una alternativa segura y eficaz a la duraplastia Tutopatch®, ya que aunque los dos materiales funcionaron igual de bien en la reparación quirúrgica de la malformación de Chiari, el primero mostró mejores resultados clínicos. Se necesitan estudios futuros para confirmar estos resultados en cohortes más grandes.

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