Polypropylene braid augmented and nonaugmented intraarticular anterior cruciate ligament reconstruction

Abstract

The purpose of this clinical retrospective study is to determine whether a polypropylene braid (PB) used to augment an intraarticular autograft to reconstruct the anterior cruciate ligament (ACL) is safe and to deter mine whether the PB improves the efficacy of the procedure.

A simultaneous review was performed of patients who had undergone an intraarticular ACL reconstruc tion using an autograft composed of the central quad riceps tendon, prepatellar periosteum, and patellar ten don left attached distally to the tibial tubercle and of patients who had undergone the same procedure with PB augmentation of the autograft. Preoperatively, all patients had chronic ACL insufficiency and were expe riencing symptomatic giving way.

A subjective questionnaire and a physician exami nation (JHR) were completed on each patient. Objective laxity and functional testing, including KT 1000 arthro meter measurement, Cybex isokinetic strength analy sis, and one leg horizontal hop for distance, were performed. Six radiographs of each operated knee were obtained. Results were statistically analyzed.

Thirty-eight of 43 (88%) nonaugmented procedures performed were reviewed, with a mean followup of 64 months. Forty-five of 48 (94%) PB augmented recon structions with a minimum followup of 42 months (max imum 57 months, mean 50 months), were reviewed. On objective laxity and function testing, the PB aug mented patients had better results than the nonaug mented patients. On subjective questioning, physician's examination, and radiographic analysis, the PB aug mented results were significantly better. There were 12 (32%) knees with recurrent symptomatic giving way in the nonaugmented group and 5 (11 %) in the PB aug mented group. Chrondromalacia patellae and arthrofi brosis were seen in both groups. No adverse reaction to the PB was seen.

We conclude that the PB is safe and that PB aug mentation improves the efficacy of the intraarticular autograft to reconstruct the ACL.

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