Degenerative arthritis and functional instability have been reported in knees with chrioic posterior crucaiate ligament injury treated conservatively. Surgical treatment for the posterior instability seems to be necessary, however, problems of
rupture or stretch of the reconstructed ligament may occur according as force to the knee joint increases. We have attemped to correct posterior knee instability due to chronic posterior cruciate ligament injury with a procedure that employs a free
autograty of one-tird of the patellar tendon augmented with PROLLAD( Protek ligament augmentation device - Protek, Bern, Switzeriland) using ＂hot-dog＂techique. The purpose of this paper is to report our experience and to evaluate early result of the
reconstructive surgical procedure.
This procedure was done for 6 knees in 6 patients during the period of 1991 to 1994. They were all males and had pain and instability. Average age was 28 years, ranging from 17 to 46 years. The interval between injury and ligament reconstruction
was minimum 3 months. Postoperatively, motion of the joint begun on second to fifty day. The average follow-up was 18months, ranging from 14 months to 26 months. There were two complications, one superficial wound infection and tenderness on the
protruded screw head, which were treated by wound care and transfer of screw, respectively.
According to the OAK evaulation chart, one patient shows excellent, five patients show good result and in Lysholm scoring, five excellent and one good. On posterior stress roentgenograms, posterior displacement improved from 16mm (range, 11mm to
20mm)
to 4mm(range, 3mm to 5mm). This early results indicate that synthetic augmentation enables patients to move their joint earlier and protects the autograft to regain its sufficient strength and that this procedure seems to be effective for
achieving
static and functional stability of the knee.
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