Nous avons comparé les résultats à 1 an des reconstructions du ligament croisé antérieur par tendon rotulien (TR) ou tendons ischio-jambiers à 4 brins (DIDT). La série est continue. Les groupes TR (50 patients) et DIDT (40 patients) étaient appariés sauf pour le critère « sexe ». L'évaluation a été réalisée par l'opérateur unique à l'aide des critères de la fiche IKDC 93 et la laxité mesurée à l'arthromètre KT1000 en tension manuelle maximale. La laxité préopératoire était de 8,0 ± 3,0 mm dans le groupe TR et 7,6 ± 3,0 mm dans le groupe DIDT.

Le résultat global dans les 2 groupes a été satisfaisant dans plus de 80 % des cas (IKDC A ou B). Le résultat final global IKDC était significativement meilleur dans le groupe TR et l'impression subjective de satisfaction du patient meilleure dans le groupe DIDT. Les douleurs résiduelles étaient significativement plus faibles dans le groupe DIDT (p = 0,004), la laxité résiduelle significativement plus réduite dans le groupe TR : 2,7 ± 2,1 mm contre 4,5 ± 2,8 mm dans le groupe DIDT (p = 0,03). La récupération du niveau d'activité et du type de sport pratiqué a été identique dans les 2 groupes.

Les deux techniques chirurgicales ont permis d'obtenir un résultat fonctionnel identique à 1 an, mais un recul plus important est nécessaire notamment pour apprécier les conséquences à long terme de la laxité résiduelle dans le groupe DIDT. Le transplant de TR reste, pour nous, la référence dans les sports à haute contrainte physique, types pivot-contact, mais la pratique des 2 techniques de ligamentoplastie du LCA nous paraît utile.

The purpose of our study was to compare outcome at one year after anterior cruciate ligament reconstruction for chronic laxity using the patellar tendon autograft or four-strand hamstring tendon autografts.

This non-randomized study included 129 consecutive patients operated on between October 1996 and September 1998. Ninety patients were available for assessment at one year: 50 in the patellar tendon group and 40 in the hamstring tendon group. The two groups were comparable for all criteria except sex. A single operator assessed all patients using the IKDC 93 chart. Laxity was measured by comparison with the healthy knee using the KT1000 at maximal manual tension. Preoperative laxity was 8.0 ± 3.0 mm in the patellar tendon group and 7.6 ± 3.0 in the hamstring tendon group. All ligamentoplasties were performed arthroscopically using a blind femoral tunnel. The patellar tendon was fixed with two metallic interference screws and the four-strand hamstring autografts with two different methods: an RCI^® interference screw or a cortical system associating a femoral Endobutton^® and tibial fixation with a bicortical tibial screw. Lateral tendonesis was performed with the fascia lata in 60 % of the patients in the patellar tendon group and in 45 % of those in the hamstring tendon group. Rehabilitation exercises were initiated early and were the same in the two groups.

Overall results were satisfactory in more than 80 % of the patients in both groups. The final IKDC score was significantly better in the patellar tendon group and subjective patient satisfaction was better in the hamstrings group. Residual pain was significantly less pronounced in the hamstrings tendon group (p = 0.004). Laxity was improved significantly better in the patellar tendon group: average residual laxity = 2.7 ± 2.1 mm versus 4.5 ± 2.8 mm (p = 0.03) in the hamstrings tendon group; hard stop at the Lachman test in 96 % of the patellar tendon group and 78 % in the hamstrings tendon group (p = 0.007). Residual laxity was significantly less pronounced in the women in the patellar tendon group. There was no significant difference in laxity by type of fixation in the hamstrings tendon group. Recovery in terms of level of activity and type of sport was the same in the two groups.

These two surgical techniques provide good functional outcome at one year with better control of laxity with patellar tendon autografts and better relief of pain with four-strand hamstrings autografts. Longer follow-up would be useful to assess laxity long after hamstring reconstruction. We compared the type of transplant and the fixation method together as a single unity, but progress in four-strand hamstring autograft fixation will certainly allow even more optimal results and improved correction of laxity. In our opinion, the patellar tendon autograft remains the gold standard for high-performance athletes practicing a contact-pivot sport, but both types of ACL reconstruction are most useful. We select patients for four-strand hamstring tendon reconstruction as a function of age, sex, and type of sports activities.