caa a22 4500 605457972 CHVBK 20210128100226.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00167-014-3302-0 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3302-0 Graft maturity of the reconstructed anterior cruciate ligament 6months postoperatively: a magnetic resonance imaging evaluation of quadriceps tendon with bone block and hamstring tendon autografts [Elektronische Daten] [Yong Ma, Christopher Murawski, Amir Rahnemai-Azar, Catherine Maldjian, Andrew Lynch, Freddie Fu] Purpose: The purpose of this study was to report the potential differences associated with graft maturity measured on magnetic resonance imaging (MRI) between quadriceps tendon with bone block and hamstring tendon autografts6months after ACL reconstruction. Methods: Twenty-six patients (15 male, 11 female; mean age 29.4±17years, range 13-46years) who had undergone anatomic SB ACL reconstruction with either hamstring or quadriceps tendon with bone block autografts and had postoperative MRI 6months after surgery. In 12 cases, the quadriceps tendon with bone block was used and hamstring in 14 cases. The signal/noise quotient was calculated to compare the difference between quadriceps tendon with bone block and hamstring autografts. Results: Mean signal/noise quotient is lesser in quadriceps tendon with bone block (1.74±0.39) compared with HS (2.44±0.61) autografts (p=0.020). For hamstring autograft, the distal region showed a significantly lower mean signal/noise quotient value compared with middle region, and the mean signal/noise quotient value in proximal region was the highest (distal vs middle p<0.001; middle vs proximal p=0.007; proximal vs distal p<0.001). The mean signal/noise quotient of proximal region in quadriceps tendon with bone block autograft was lesser than that in hamstring. The middle region of the quadriceps tendon with bone block graft demonstrated the greatest signal/noise quotient [distal vs middle p=0.001; middle vs proximal p=0.027; proximal vs distal (n.s.)]. Conclusion: The maturity of quadriceps tendon with bone block was better in comparison with hamstring 6months after anatomic SB ACL reconstruction. This study is clinically relevant in that modifying the individual rehabilitation according to the extent of graft maturity may be necessary to optimize patient function and prevent re-injury of the ACL graft. Level of evidence: Retrospective case series, Level IV. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2014 ACL nationallicence Anatomic nationallicence MRI nationallicence Signal intensity nationallicence Autograft nationallicence Postoperative nationallicence Ma Yong Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut Murawski Christopher Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut Rahnemai-Azar Amir Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut Maldjian Catherine Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA aut Lynch Andrew Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut Fu Freddie Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/3(2015-03-01), 661-668 0942-2056 23:3<661 2015 23 167 https://doi.org/10.1007/s00167-014-3302-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3302-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ma Yong Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Murawski Christopher Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Rahnemai-Azar Amir Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Maldjian Catherine Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Lynch Andrew Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Fu Freddie Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/3(2015-03-01), 661-668 0942-2056 23:3<661 2015 23 167