Manuel ARROYA MORALES, Jose Luis MARTİN GOMEZ, Mario LOZANO LOZANO, Noelia GALİANO CASTİLLO, Irene CANTARERO VİLLANUEVA

Comparison of knee sonography and pressure pain threshold after anterior cruciate ligament reconstruction with quadriceps tendon versus hamstring tendon autografts in soccer players

Objective: The aim of this study was to compare the pressure pain threshold and muscle architecture after an anatomic single bundle reconstructionwith quadriceps tendon and hamstring tendon autografts of the anterior cruciate ligament in competitive soccer players. We hypothesized that both procedures will obtain similar outcomes. Methods: Fifty-one participants were enrolled in this secondary analysis of a randomized controlled trial and were categorised into two groups: quadriceps tendon (QT) group (23 men and 3 women; mean age 18.7 ± 3.6; BMI 23.0 ± 2.2) or hamstring tendon (HT) group (16 men and 9 women; mean age 19.2 ± 3.6 BMI 23.5 ± 3.5). Both groups followed the same rehabilitation staged protocol. Pressure pain threshold (PPT), as a measure of perceived pain, was obtained in several points of quadriceps and hamstring muscles. Ultrasound imaging measurements were obtained in quadriceps tendon and knee cartilage thickness. Four measurements were taken in this study: baseline,1, 3, 6, and 12 months after the anterior cruciate ligament (ACL) reconstruction. Results: The analysis of PPT did not ﬁnd signiﬁcant differences in both groups interaction time in the points evaluated: epicondyle (QT ¼ 421.1 ± 184.1 vs HT ¼ 384.7 ± 154.1 kPa), vastus lateralis (QT ¼ 576.2 ± 221.3 vs HT ¼ 560.1 ± 167.7 kPa), vastus medialis (QT ¼ 544.7 ± 198.8 vs HT ¼ 541.1.1 ± 181.77 kPa), patellar tendon (QT ¼ 626.3 ± 221.1 vs HT ¼ 665.0 ± 205.5 kPa), QT (QT ¼ 651.1 ± 276.9 vs HT ¼ 660.0 ± 195.2 kPa). (QT ¼ 667.8 ± 284.7 vs HT ¼ 648.2 ± 193.4 kPa) injured knee (all P > 0.05). The results of ultrasound imaging did not show signiﬁcant differences in both groupsinteraction time in the thickness of the QT (QT ¼ 9.9 ± 2.4 vs HT ¼ 9.4 ± 1.7 kPa) and patellar cartilage (QT ¼ 3.2 ± 0.6 vs HT ¼ 3.2 ± 0.4 kPa) (P > 0.05). Conclusion: A QT autograft produces similar results to a HT autograft in ACL reconstructions in terms of pressure pain threshold and ultrasound muscle architecture during the 1-year follow-up.

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