PURPOSE: The aim of the study was to compare three different procedures performed by the same surgeon: mono-bundle patellar tendon reconstruction (bone-patellar tendon-bone, BPTB), double-bundle hamstring reconstruction (DBH) and mono-bundle patellar tendon combined with extra-articular reconstruction (Lemaire) (BPTB + L). METHODS: A total of 75 patients (25 in each group) were evaluated at a mean follow-up of 25 months. Laxity was assessed pre- and post-operatively with Telos™ stress radiographs (15 kg). The amount of anterior tibial translation (ATT) corrected by the surgery was quantified. Secondary outcomes were International Knee Documentation Committee (IKDC) scores, pivot shift grading, pain complaints, sensory deficits, subsequent surgical procedures, return to sports and patients' ability to kneel or squat on their affected knee. RESULTS: Absolute correction of ATT for the internal compartment was not statistically significant [analysis of variance (ANOVA), p=0.377]. For the external compartment BPTB + L (8.2 mm) showed superiority over DBH (5.6 mm) and BPTB (4.1 mm) (ANOVA, p=0.0001, Tukey's test). Kneeling was better in the DBH group (ANOVA, p=0.0001, Tukey's test). In 22 patients it felt normal, while only in seven in the BPTB and eight in the BPTB + L groups. Sensory deficits were present in 11 patients from the DBH group, while in 17 in the BPTB and 19 in the BPTB + L groups (ANOVA, p=0.052). Mean IKDC values, presence of anterior knee pain, subsequent operations, ability to squat and return to sports were not statistically different between groups. CONCLUSIONS: Absolute correction of ATT was not statistically different for the medial compartment, but the patellar tendon reconstruction combined with the extra-articular procedure achieved the best lateral compartment ATT correction. Sensory deficits and kneeling seem to be worse in the groups where the patellar tendon is harvested.
PURPOSE: The aim of the study was to compare three different procedures performed by the same surgeon: mono-bundle patellar tendon reconstruction (bone-patellar tendon-bone, BPTB), double-bundle hamstring reconstruction (DBH) and mono-bundle patellar tendon combined with extra-articular reconstruction (Lemaire) (BPTB + L). METHODS: A total of 75 patients (25 in each group) were evaluated at a mean follow-up of 25 months. Laxity was assessed pre- and post-operatively with Telos™ stress radiographs (15 kg). The amount of anterior tibial translation (ATT) corrected by the surgery was quantified. Secondary outcomes were International Knee Documentation Committee (IKDC) scores, pivot shift grading, pain complaints, sensory deficits, subsequent surgical procedures, return to sports and patients' ability to kneel or squat on their affected knee. RESULTS: Absolute correction of ATT for the internal compartment was not statistically significant [analysis of variance (ANOVA), p=0.377]. For the external compartment BPTB + L (8.2 mm) showed superiority over DBH (5.6 mm) and BPTB (4.1 mm) (ANOVA, p=0.0001, Tukey's test). Kneeling was better in the DBH group (ANOVA, p=0.0001, Tukey's test). In 22 patients it felt normal, while only in seven in the BPTB and eight in the BPTB + L groups. Sensory deficits were present in 11 patients from the DBH group, while in 17 in the BPTB and 19 in the BPTB + L groups (ANOVA, p=0.052). Mean IKDC values, presence of anterior knee pain, subsequent operations, ability to squat and return to sports were not statistically different between groups. CONCLUSIONS: Absolute correction of ATT was not statistically different for the medial compartment, but the patellar tendon reconstruction combined with the extra-articular procedure achieved the best lateral compartment ATT correction. Sensory deficits and kneeling seem to be worse in the groups where the patellar tendon is harvested.
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