Olecranization of the patella

J. L. Rungee, M. J. Fay, T. M. Deberardino

Producción científica: Articlerevisión exhaustiva

5 Citas (Scopus)

Resumen

Olecranization of the patella is a technique employed by some to maintain the normal anatomic relationship of the femorotibial articulation following posterior cruciate ligament (PCL) repairs and reconstructions. It involves temporarily placing a large diameter pin longitudinally through the patella and into the tibia. The patella thus becomes a bony shelf and, in theory, holds the tibia forward, protecting the knee from a posterior drawer force. This technique appears desirable in that it allows postoperative knee motion while theoretically affording protection to the PCL. Unfortunately, it is based on an erroneous concept that the spatial relationship of the patella and tibia remains constant throughout knee flexion. Negative experience at our institution with this technique prompted our investigation. Using lateral radiographs of 20 normal knees taken at four different positions of flexion, we studied the relative motion that occurs between the patella and tibia in the sagittal plane during knee flexion from 0° to 90°, and defined two separate arcs of patellar motion. The patellar tendon arc is a 30° arc through which the patella traverses relative to the tibia during knee flexion. The patellar arc is a 22° arc on which the patella flexes relative to itself during knee flexion. We also studied the effect that olecranization of the patella has on the PCL in six cadaver knees. Using a combination of direct tension measurement, radiographic measurement, and fluoroscopy, we found that olecranization of the patella not only fails to protect the PCL, but actually induces a detrimental posterior drawer force during knee flexion. Based on clinical experience and laboratory findings, we strongly recommend that olecranization of the patella be abandoned as a means of postoperative ligamentous protection following PCL repair or reconstruction.

Idioma originalEnglish (US)
Páginas (desde-hasta)27-34
Número de páginas8
PublicaciónOrthopedics
Volumen18
N.º1
EstadoPublished - 1995
Publicado de forma externa

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Huella

Profundice en los temas de investigación de 'Olecranization of the patella'. En conjunto forman una huella única.

Citar esto