[A new irrigation-suction boring system facilities low-pressure intramedullary boring of isolated swine femurs].
OBJECTIVE
Intramedullary nailing is the treatment of choice for the stabilization of fractures of long tubular bones. An important disadvantage of this method is the increase in intramedullary pressure and the resulting release of fat into the venous blood system during reaming of the medullary canal. We have developed a new type of rinsing-suction-reamer (SSB) in order to minimize these disadvantages. Trials were initiated to investigate whether it is possible to ream the medullary canal with the SSB without pressure increase in comparison with the standard AO-reamer (AOB).


METHODS
Reamed intramedullary nailing was performed in 20 isolated pig femora. The intramedullary pressure was recorded continuously.


RESULTS
While stepwise reaming was performed, the pressure only rose above the physiological level in AOB. During insertion of the guide wire and the nail, comparable values were measured for AOB and SSB.


CONCLUSIONS
Our experiments show that reaming of the medullary canal is possible without a pressure increase using the SSB in comparison with AOB.
Joist
A
A
Klinik für Unfall-, Hand- und Wiederherstellungschirurgie, Prosper-Hospital Recklinghausen.
Schult
M
M
Frerichmann
U
U
Frebel
T
T
Spiegel
H-U
HU
Koppe
M
M
Joosten
U
U
D000818:Animals; D004620:Embolism, Fat / Q000517:prevention & control; D004867:Equipment Design; D005594:Fracture Fixation, Intramedullary / Q000295:instrumentation*; D013396:Suction / Q000295:instrumentation*; D013552:Swine; D007507:Therapeutic Irrigation / Q000295:instrumentation*