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Inicio Revista Española de Cirugía Ortopédica y Traumatología Anillos de reconstrucción en la cirugía de revisión de las artroplastias de c...
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Vol. 50. Issue 2.
Pages 93-99 (January 2006)
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Vol. 50. Issue 2.
Pages 93-99 (January 2006)
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Anillos de reconstrucción en la cirugía de revisión de las artroplastias de cadera
Acetabular rings in revision total hip replacement
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D. Hernández-Vaqueroa,,b,
Corresponding author
dhernandezv@meditex.es

Correspondencia: Apartado de Correos 341. 33400 Avilés. Asturias.
, R. Gavab, A. Suárez-Vázquezb, D. Pérez-Hernándezb, J. Fernández-Lombardíab
a Departamento de Cirugía. Facultad de Medicina. Oviedo
b Servicio de Cirugía Ortopédica y Traumatología. Hospital San Agustín. Avilés
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Objetivo

Evaluar los resultados radiográficos de los anillos de reconstrucción utilizados en la cirugía de revisión de grandes defectos acetabulares.

Material y método

Se ha estudiado la evolución radiológica de 13 anillos de reconstrucción utilizados en grados 3 y 4, con un seguimiento mínimo de 25 meses y máximo de 60 (media de seguimiento: 37 meses). En todos los casos se utilizaron aloinjertos debajo del anillo y cúpula cementada. Las mediciones radiológicas usadas tomaban como referencia la posición, altura y profundidad del anillo, así como la evolución del centro de la cabeza protésica. También se registró la presencia de complicaciones y la recuperación de la dismetría de extremidades.

Resultados

Se presentaron tres complicaciones, una lesión vascular intraoperatoria, una luxación posterior y una infección superficial. El descenso medio del centro de rotación fue de 4 cm. En ningún caso fue necesario reintervenir a los pacientes. La dismetría de extremidades disminuyó de 6,3 cm en el preoperatorio a 3,1 cm en el postoperatorio inmediato. Después no se encontraron modificaciones en las mediciones radiográficas.

Conclusiones

La utilización de un anillo de reconstrucción en la cirugía de revisión acetabular permite descender el centro de rotación de la cadera y recuperar precozmente la estructura y depósito óseo sin complicaciones graves.

Palabras clave:
artroplastia total de cadera
revisión acetabular
anillo de reconstrucción
Purpose

To assess the radiographic results of reconstruction rings used in surgical procedures conducted to revise large acetabular defects.

Materials and methods

A study was carried out to analyze the radiological evolution of 13 acetabular rings used in grade 3 and 4 patients, with a follow-up between 25 and 60 months (mean: 37 months). In all cases, allografts were placed underneath the ring and the cemented cup. The radiological measurements taken used as their landmarks the position, height and depth of the ring as well as the evolution of the center of the prosthetic head. The appearance of complications was also recorded, as was the restoration of limb dysmetry.

Results

There were three complications, an intraoperative vascular lesion, a posterior dislocation as well as a superficial infection. The average downward migration of the center of rotation was 4 cm. In no case was it necessary to reoperate. Limb dysmetry went down from a preop value of 6.3 cm to 3.1 at the immediate postop. Alter this, no changes were found in the radiographical measurements.

Conclusions

The use of an acetabular ring in revision THR enables the bringing down of the hip’s center of rotation as well as an early restoration of both the structure of the area an the bone stock without any serious complications.

Key words:
total hip replacement
acetabular revision
acetabular ring
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Copyright © 2006. Sociedad Española de Cirugia Ortopédica y Traumatología (SECOT)
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