[Transversal fracture of the patella: experimental evaluation of the Lotke and Ecker method of internal fixation].
Four different methods of internal fixation of transverse fractures of the patella were experimentally evaluated in eight cadaver knees: circumferential wiring, tension band cerclage, cerclage over Kirschner wires and the Lotke's method. Linear and angular displacements were accurately measured by means of a micrometer while actively extending the knee from 90 degrees of flexion to full extension. Circumferential wiring gave the highest displacements, up to 25 mm at 30 degrees of flexion on average. Tension band cerclage showed much better results but the greatest stability was obtained with the cerclage over Kirschner wires and with the Lotke's technique which yielded displacements of less than 1 mm. These last two methods combine the tension band principle and transosseous fixation, which are both essential to obtain a stable fixation.
Buzzi
R
R
Aglietti
P
P
Gaudenzi
A
A
Scrobe
F
F
Todescan
G
G
de' Faveri Tron
M
M
D005069:Evaluation Studies as Topic; D005593:Fracture Fixation, Internal / Q000379:methods*; D050723:Fractures, Bone / Q000601:surgery*; D006801:Humans; D010329:Patella / Q000293:injuries*
Fratture trasversali di rotula: valutazione sperimentale del metodo di fissazione interna di lotke e ecker.