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Clinical Research
Available online 2 March 2026

Bone flap fixation with clamp-like devices or with titanium plates and screws: A cost-minimization analysis

Fijación del colgajo con dispositivo tipo remache o con placas y tornillos de titanio: un análisis de minimización de costes
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Álvaro Gómez de la Rivaa,b,
Corresponding author
gomeznarro33@hotmail.com

Corresponding author.
, Fernando Muñoz-Hernándezc
a Neurosurgery Department, Hospital Univesitario La Paz, Madrid, Spain
b Universidad Europea de Madrid, Madrid, Spain
c Neurosurgery Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
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Abstract
Objectives

Clamp-like devices such as Cranial LOOP have similar performance and safety than titanium plates and screws to fix the bone flap after a craniotomy. This raises the question of which of these methods is more cost-effective. This cost-minimization analysis compares the cost associated with each of these methods in the setting of an already published RCT.

Material and methods

The data from a previously published RCT was analyzed to assess the mean cost of bone flap fixation after craniotomy using Cranial LOOP or plates and screws; this analysis included the cost of the devices, the implantation time cost and the implantation instruments reprocessing cost. This data was then analyzed to model the global cost of the craniotomy fixation for a range of implant unitary costs.

Results

As a median, craniotomies were fixed with 3 Cranial LOOP or with 4 sets of titanium plates and screws. Both the total and the unitary cost for the devices were significantly lower with Cranial LOOP than with plating systems (306.4±100.0€ vs 568.8±261.6€, p<0.001; 88.2±7.3€ vs 154.9±67.6€, p<0.001). The implantation time of Cranial LOOP was significantly shorter than that of plating systems (1.70±0.20min vs 6.27±1.88min, p<0.001). Cranial LOOP does not require implantation instruments, while the implantation kits for plating systems require reprocessing (washing and sterilization). In total, the craniotomy fixation with Cranial LOOP costs between 360.56€ and 370.77€ less than with plating systems.

Conclusions

The cost of craniotomy fixation with Cranial LOOP was half the cost of fixation with plating systems. In addition, not requiring instrument reprocessing for Cranial LOOP saved water and energy.

Keywords:
Health economics
Costs and cost analysis
Craniotomy
Cranial LOOP
Bone plates
Abbreviations:
RCT
MRI
CT
EU
Resumen
Objetivos

Los dispositivos de cierre tipo remache como Cranial LOOP proporcionan una funcionalidad y seguridad similar a la de las placas y tornillos de titanio en la fijación del colgajo tras una craneotomía. Esto lleva a la pregunta de cuál de estos métodos es más coste-efectivo. Este análisis de minimización de costes compara el coste asociado a cada uno de estos métodos en el contexto de un estudio aleatorizado y controlado ya publicado.

Materiales y métodos

Los datos de un estudio aleatorizado y controlado previamente publicado han sido analizados para evaluar el coste medio de la fijación del colgajo tras una craneotomía usando Cranial LOOP o placas y tornillos; este análisis ha incluido el coste de los dispositivos, del tiempo de implantación y del reprocesamiento de los instrumentales de implantación. Estos datos se han utilizado para modelizar el coste global de la fijación de la craneotomía para un abanico de precios unitarios de los implantes.

Resultados

De mediana, las craneotomías se cerraron con 3 Cranial LOOP o con 4 sets de placas y tornillos de titanio. Tanto el coste total como el coste unitario de los dispositivos utilizados fue significativamente menor con Cranial LOOP que con el sistema de placas (306.4±100.0€ vs 568.8±261.6€, p<0.001; 88.2±7.3€ vs 154.9±67.6€, p<0.001). El tiempo de implantación con Cranial LOOP fue significativamente más corto que con el sistema de placas (1.70±0.20 minutos vs 6.27±1.88 minutos, p<0.001). Cranial LOOP no requiere instrumentales de implantación, mientras que el sistema de placas tiene un kit de implantación que requiere reprocesado (lavado y esterilización). En total, la fijación de la craneotomía con Cranial LOOP cuesta entre 360.56€ y 370.77€ menos que con sistema de placas.

Conclusiones

El coste de la fijación de la craneotomía con Cranial LOOP fue la mitad que con el sistema de placas. Además, al no requerir reprocesado de instrumental, Cranial LOOP ahorró en el uso de agua y energía.

Palabras clave:
Economía de la salud
Costes y análisis de costes
Craneotomía
Cranial LOOP
Placas óseas

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