41-226
Desalineación rotacional del implante tibial en artroplastia total de rodilla. Estudio con navegación.
Malrotation of the tibial implant in total of knee arthroplasty. Study with navegation system.
B. SERAL, F. SERAL, A. CASTRO, J. GOMEZ, E. BLANCO. SERVICIO DE TRAUMATOLOGÍA Y CIRUGÍA ORTOPÉDICA. HOSPITAL CLÍNICO UNIVERSITARIO LOZANO BLESA, ZARAGOZA.
Recepción:
12/09/2008
Aceptación:
12/09/2008
Publicación:
12/09/2008
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Resumen (ES)
To study the rotational alignment of the tibial
implant in 19 patients who underwent total knee arthroplasty
by surgical navigation system. Material and Methods:
Prospective analysis of 19 consecutive patients with knee
osteoarthritis. References obtained by the computerized navigation
were: 1- the angle between the line from the insertion
of the posterior cruciate ligament to the medial tibial tuberosity
and the anteroposterior tibial implant line to study the
tibial rotation; 2- the angle between the epicondyle line and
the cut piece to study the femoral rotation. Results: The media
tibial implant rotation was - 0,011º ± 0,533 (r: -0,800/ 1,000). The
femoral implant rotation was -3,174º ± 4,733 (r: -12,300 / 7,700).
The mean angle of the rotational mismatch of the components
was -2,963º ± 4,649 (r: -11,500/ 6,700). There was a good femorotibial
mismatch in 63%. Conclusions: The navigation system
helps us to put the tibial implant in a good rotation and so a
good femorotibial mismatch. Actually we study the combined
rotation of the implants to decrease the patelofemoral problems
and the polyethylene damage.
implant in 19 patients who underwent total knee arthroplasty
by surgical navigation system. Material and Methods:
Prospective analysis of 19 consecutive patients with knee
osteoarthritis. References obtained by the computerized navigation
were: 1- the angle between the line from the insertion
of the posterior cruciate ligament to the medial tibial tuberosity
and the anteroposterior tibial implant line to study the
tibial rotation; 2- the angle between the epicondyle line and
the cut piece to study the femoral rotation. Results: The media
tibial implant rotation was - 0,011º ± 0,533 (r: -0,800/ 1,000). The
femoral implant rotation was -3,174º ± 4,733 (r: -12,300 / 7,700).
The mean angle of the rotational mismatch of the components
was -2,963º ± 4,649 (r: -11,500/ 6,700). There was a good femorotibial
mismatch in 63%. Conclusions: The navigation system
helps us to put the tibial implant in a good rotation and so a
good femorotibial mismatch. Actually we study the combined
rotation of the implants to decrease the patelofemoral problems
and the polyethylene damage.
Palabras clave (ES):
rotacional
Desalineación
Navegador
Rotación
Prótesis
Rodilla
Navegación
Técnica
Artroplastia
Resumen (EN)
To study the rotational alignment of the tibial
implant in 19 patients who underwent total knee arthroplasty
by surgical navigation system. Material and Methods:
Prospective analysis of 19 consecutive patients with knee
osteoarthritis. References obtained by the computerized navigation
were: 1- the angle between the line from the insertion
of the posterior cruciate ligament to the medial tibial tuberosity
and the anteroposterior tibial implant line to study the
tibial rotation; 2- the angle between the epicondyle line and
the cut piece to study the femoral rotation. Results: The media
tibial implant rotation was - 0,011º ± 0,533 (r: -0,800/ 1,000). The
femoral implant rotation was -3,174º ± 4,733 (r: -12,300 / 7,700).
The mean angle of the rotational mismatch of the components
was -2,963º ± 4,649 (r: -11,500/ 6,700). There was a good femorotibial
mismatch in 63%. Conclusions: The navigation system
helps us to put the tibial implant in a good rotation and so a
good femorotibial mismatch. Actually we study the combined
rotation of the implants to decrease the patelofemoral problems
and the polyethylene damage.
implant in 19 patients who underwent total knee arthroplasty
by surgical navigation system. Material and Methods:
Prospective analysis of 19 consecutive patients with knee
osteoarthritis. References obtained by the computerized navigation
were: 1- the angle between the line from the insertion
of the posterior cruciate ligament to the medial tibial tuberosity
and the anteroposterior tibial implant line to study the
tibial rotation; 2- the angle between the epicondyle line and
the cut piece to study the femoral rotation. Results: The media
tibial implant rotation was - 0,011º ± 0,533 (r: -0,800/ 1,000). The
femoral implant rotation was -3,174º ± 4,733 (r: -12,300 / 7,700).
The mean angle of the rotational mismatch of the components
was -2,963º ± 4,649 (r: -11,500/ 6,700). There was a good femorotibial
mismatch in 63%. Conclusions: The navigation system
helps us to put the tibial implant in a good rotation and so a
good femorotibial mismatch. Actually we study the combined
rotation of the implants to decrease the patelofemoral problems
and the polyethylene damage.
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