Eleven consecutively seen patients who had posterolateral rotatory
instability of the elbow joint were managed operatively. The radial
collateral-ligament complex was advanced and imbricated in three of them.
In seven patients, the ulnar band of the radial collateral ligament (the
lateral ulnar collateral ligament) was reconstructed with the palmaris
longus tendon and in two of the seven, the reconstruction was augmented
with a prosthetic ligament. The ligament was reconstructed with the lateral
one-third of the triceps fascia in the remaining patient. Stability was
obtained in ten patients, and seven patients had an excellent functional
result. There was one failure in one of the patients in whom the ulnar band
of the radial collateral ligament had been reconstructed with the palmaris
longus tendon and augmented with a prosthetic ligament.