[Technique of finger arthrodesis by dorsal thread tension band fixation. Comparing biomechanical investigations].
Dorsal tension band fixation is a wide-spread technique of finger arthrodesis. When using a resorbable PDS-suture as tension band fixation a costly implant removal is not needed. Aim of this study is the investigation of the primary stability of this technique in combination with the cup-in-cone-procedure. Freeze-preserved fingers with thread tension band fixation using the PDS-material (series 1), the same fixating method on formaldehyde preserved fingers (series 3), freeze-preserved fingers with a standard tension band fixating (wire loop, series 2) are load in a four-point-bending in the direction of palmarflexion. From 6 degrees onwards the wire-tension-system requires a higher torque for bending, but in case of higher torque frequently leads to fracture. The examination shows that the thread-tension-band method by PDS-loop for the stabilisation of finger joint arthrodesis has a sufficient initial stability against bending forces.
Klinik für Orthopädie und Sportorthopädie, Technische Universität München.
W
W
Mittelmeier
C
C
Braun
M
M
Hauschild
R
R
Schäfer
D000328:Adult; D000368:Aged; D001174:Arthrodesis / Q000295:instrumentation / Q000379:methods*; D001696:Biomechanical Phenomena; D005260:Female; D005384:Finger Joint / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged
Fingergelenkarthrodese mittels dorsaler Fadenzuggurtung. Vergleichende biomechanische Untersuchungen.