PEEK Interference Screws Show Significant Tunnel Enlargement After ACL Reconstruction and is Comparable to Adjustable-Length Loop Cortical Button Fixation.

Coppola, Christian; Krost, Sandra; Runer, Armin; Raas, Christoph; Glodny, Bernhard; Mayr, Raul

doi:10.1007/s43465-023-01029-8

Klinik und Poliklinik für Orthopädie und Sportorthopädie (Prof. von Eisenhart-Rothe)

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Title:: PEEK Interference Screws Show Significant Tunnel Enlargement After ACL Reconstruction and is Comparable to Adjustable-Length Loop Cortical Button Fixation.
Document type:: Article; Early Access; Journal Article
Author(s):: Coppola, Christian; Krost, Sandra; Runer, Armin; Raas, Christoph; Glodny, Bernhard; Mayr, Raul
Abstract:: BACKGROUND: It is unclear whether the use of polyetheretherketone (PEEK) interference screws for anterior cruciate ligament (ACL) reconstruction leads to postoperative tunnel enlargement. Femoral tunnel enlargement was further compared with adjustable-length loop cortical fixation. METHODS: Eighteen patients with ACL reconstruction using hamstring grafts were retrospectively divided into two groups. Eleven patients were treated with the ACL reconstruction technique using a PEEK interference screw for femoral graft fixation. Seven patients received adjustable-length loop cortical buttons for femoral fixation. Tibial ACL graft fixation was performed using PEEK interference screws. Tunnel volume changes were assessed using computed tomography (CT) scans performed after surgery (100%) and after 1 year. The maximal tunnel diameter was measured. RESULTS: The group with femoral screw fixation showed a mean tunnel volume change of 108.15 ± 13.7% on the tibial side and 124.07 ± 25.38% on the femoral side. The group with femoral button fixation showed a tunnel volume change of 111.12 ± 12.72% on the tibial side and 130.96 ± 21.71% on the femoral side. The differences in femoral tunnel volume changes were not significant (P = 0.562). Femoral tunnels with PEEK screw fixation showed significantly larger diameter after 12 months in comparison with button fixation (13.02 ± 1.43 mm vs. 10.46 ± 1.29 mm, P < 0.001). CONCLUSIONS: PEEK interference screws were associated with significant tibial and femoral tunnel enlargement. Femoral tunnel enlargement was comparable between PEEK interference screws and button fixation. Final femoral tunnel diameter was significantly larger with PEEK screw fixation in comparison to button fixation.
Journal title abbreviation:: Indian J Orthop
Year:: 2024
Journal volume:: 58
Journal issue:: 1
Pages contribution:: 40-47
Fulltext / DOI:: doi:10.1007/s43465-023-01029-8
Pubmed ID:: http://view.ncbi.nlm.nih.gov/pubmed/38161404
Print-ISSN:: 0019-5413
TUM Institution:: Klinik und Poliklinik für Orthopädie und Sportorthopädie (Prof. von Eisenhart-Rothe)
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mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Departments Clinical Medicine Klinik und Poliklinik für Orthopädie und Sportorthopädie (Prof. von Eisenhart-Rothe)2024