Georg Mattiassich1,2, Reinhold Ortmaier3,4, Harald Kindermann5, Jürgen Barthofer6, Imre Vasvary7,8, Stefan Tino Kulnik9,10, Klaus Katzensteiner6, Iris Leister11,12. 1. Trauma Center Graz, Teaching Hospital of the Medical University Graz, Graz, Austria. 2. Ludwig-Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria. 3. Department of Orthopaedic Surgery, Ordensklinikum Barmherzige Schwestern Linz, Vinzenzgruppe Center of Orthopaedic Excellence, Teaching Hospital of the Paracelsus Medical University Salzburg, Austria. 4. Research Unit of Orthopedic Sports Medicine and Injury Prevention, Institute for Sports Medicine, Alpine Medicine and Health Tourism (ISAG), UMIT, Hall in Tirol, Austria. 5. Department of Marketing and Electronic Business, University of Applied Sciences Upper Austria, Steyr, Austria. 6. Trauma Center Linz, Teaching Hospital of the Paracelsus Medical University Salzburg, Linz, Austria. 7. Department of Radiology, Diakonissen Wehrle, Salzburg, Austria. 8. Department of Radiology, Landeskrankenhaus Salzburg, Paracelsus Medical University. 9. Ludwig Boltzmann Institute for Digital Health and Prevention, Salzburg, Austria. 10. Faculty of Health, Social Care and Education, Kingston University and St George's, University of London, London, United Kingdom. 11. Institute of Molecular Regenerative Medicine, Paracelsus Medical University Salzburg, Austria. 12. Spinal Cord Injury and Tissue Regeneration Center Salzburg(SCI-TReCS), Paracelsus Medical University, Salzburg, Austria.
Abstract
BACKGROUND: Anterior cruciate ligament (ACL) injury can lead to reduced function, meniscal lesions, and early joint degeneration. Preservation of a torn ACL using the Internal Brace technique might re-establish normal knee kinematics, avoid donor-site morbidity due to tendon harvesting, and potentially maintain proprioception of the knee. METHODS: Fifty subjects were recruited for this study between December 2015 and October 2016. Two groups of individuals who sustained a unilateral ACL rupture were included: those who underwent surgery with preservation of the injured ACL (Internal Brace technique; IB) and those who underwent ACL reconstruction using a hamstring tendon graft (all-inside technique; AI). Subjective self-administered scores were used: the German version of the IKDC Subjective Knee Form (International Knee Documentation Committee), the German version of the WOMAC (Western Ontario and McMaster Universities Arthritis Index), SF-36 (short form), the German version of the KOOS (Knee Osteoarthritis Outcome Score), and the German version of themodified Lysholm Score by Lysholm and Gillquist. Anterior tibial translation was assessed using the KT-1000 Arthrometer (KT-1000 Knee Ligament Arthrometer, MEDmetric Corp., San Diego, CA, USA). Magnetic resonance evaluation was performed in all cases. RESULTS: Twenty-three subjects (46 %) were men, and the mean age was 34.7 years. The objective IKDC scores were "normal" in 15 and 14 patients, "nearly normal" in 11 and 7 patients, and "abnormal" in 1 and 2 patients, in the IB and AI groups, respectively. KT-1000 assessment showed a sideto-side difference of more than 3 mm on maximum manual testing in 11 (44 %) and 6 subjects (28.6 %) in the IB and AI groups, respectively. In the postoperative MRI, 20 (74 %) and 22 subjects (96 %) in the IB and AI groups had an intact ACL. Anterior tibial translation was significantly higher in the IB group compared with the AI group in the manual maximum test. CONCLUSIONS: Preservation of the native ACL with the Internal Brace primary repair technique can achieve comparable results to ACL reconstruction using Hamstring autografts over a short term. Clinically relevant limitations such as a higher incidence of pathologic laxity, with patients more prone to pivot-shift phenomenon were observed during the study period. Thieme. All rights reserved.
BACKGROUND: Anterior cruciate ligament (ACL) injury can lead to reduced function, meniscal lesions, and early joint degeneration. Preservation of a torn ACL using the Internal Brace technique might re-establish normal knee kinematics, avoid donor-site morbidity due to tendon harvesting, and potentially maintain proprioception of the knee. METHODS: Fifty subjects were recruited for this study between December 2015 and October 2016. Two groups of individuals who sustained a unilateral ACL rupture were included: those who underwent surgery with preservation of the injured ACL (Internal Brace technique; IB) and those who underwent ACL reconstruction using a hamstring tendon graft (all-inside technique; AI). Subjective self-administered scores were used: the German version of the IKDC Subjective Knee Form (International Knee Documentation Committee), the German version of the WOMAC (Western Ontario and McMaster Universities Arthritis Index), SF-36 (short form), the German version of the KOOS (Knee Osteoarthritis Outcome Score), and the German version of themodified Lysholm Score by Lysholm and Gillquist. Anterior tibial translation was assessed using the KT-1000 Arthrometer (KT-1000 Knee Ligament Arthrometer, MEDmetric Corp., San Diego, CA, USA). Magnetic resonance evaluation was performed in all cases. RESULTS: Twenty-three subjects (46 %) were men, and the mean age was 34.7 years. The objective IKDC scores were "normal" in 15 and 14 patients, "nearly normal" in 11 and 7 patients, and "abnormal" in 1 and 2 patients, in the IB and AI groups, respectively. KT-1000 assessment showed a sideto-side difference of more than 3 mm on maximum manual testing in 11 (44 %) and 6 subjects (28.6 %) in the IB and AI groups, respectively. In the postoperative MRI, 20 (74 %) and 22 subjects (96 %) in the IB and AI groups had an intact ACL. Anterior tibial translation was significantly higher in the IB group compared with the AI group in the manual maximum test. CONCLUSIONS: Preservation of the native ACL with the Internal Brace primary repair technique can achieve comparable results to ACL reconstruction using Hamstring autografts over a short term. Clinically relevant limitations such as a higher incidence of pathologic laxity, with patients more prone to pivot-shift phenomenon were observed during the study period. Thieme. All rights reserved.
Authors: Christiaan H W Heusdens; Karen Blockhuys; Ella Roelant; Lieven Dossche; Francis Van Glabbeek; Pieter Van Dyck Journal: Knee Surg Sports Traumatol Arthrosc Date: 2021-01-02 Impact factor: 4.342