Krogius tenoplasty for recurrent dislocation of the patella. Failure associated with joint laxity.

Thirty-three patients treated with a Krogius tenoplasty for recurrent dislocation of the patella have been followed for an average of 3 years; the knees were classified according to Rünow. In 14 of 34 operated knees dislocations had recurred. Most of the recurrences were found in patients with generalized joint laxity, whereas only one of nine knees with only a high Insall index had redislocated. Patients with generalized joint laxity should not be treated with the Krogius tenoplasty as the sole procedure.