Current tendon/ligament reconstructions integrate via scar tissue rather than proper bone-tendon interface regeneration, which affects graft longevity, changes in bone tunnel size, and functional outcomes. The purpose of this study was to develop a functional demineralized bone matrix (DBM) + fibrocartilage extracellular matrix (FCECM) composite scaffold, characterize its physicochemical properties, and evaluate its efficacy in repairing tendon-bone interface in a rabbit tendon reconstruction model. Solubilized FCECM was loaded and crosslinked on to DBM scaffolds via gamma-irradiation to create DBM + FCECM scaffolds. The resulting scaffold showed interconnected pores coated with FCECM and protein cargo similar to FCECM. The addition of FCECM modified the physicochemical properties of the DBM scaffold, including microstructure, biochemical composition, mechanical strength, thermodynamic properties, and degradation period. The DBM + FCECM scaffold was biocompatible for mesenchymal stem cells (MSCs) and resulted in elevation of fibrochondrogenic gene markers compared to DBM scaffolds in vitro. In vivo implantation of DBM + FCECM scaffold resulted in neofibrocartilage formation, better pullout strength, and less bone tunnel widening compared to DBM only group in a rabbit tendon reconstruction model. In conclusion, the FCECM augmented DBM scaffold repairs the tendon-bone interface with osseous-fibrocartilage tissue, which may be utilized to improve current tendon reconstruction surgeries.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.bioadv.2023.213522 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Medial patellofemoral ligament reconstruction using synthetic suture tape: A systematic review of biomechanical and clinical outcomes.
J Clin Orthop Trauma
February 2025
Utah Valley Orthopedics and Sports Medicine, 1157 N 300 W, Provo, UT, 84604, USA.
Purpose: To review outcomes of medial patellofemoral ligament reconstruction (MPFLR) using synthetic suture tape in biomechanical and clinical studies.
Methods: A comprehensive literature search was performed in three databases. Studies reporting biomechanical and/or clinical outcomes of MPFLR using synthetic suture tape were included.
Comparison of Dynamic Postural Stability in Autografts Versus Allografts Following Anterior Cruciate Ligament Reconstruction With Remnant Preservation: A Prospective Study With 1-Year Follow-up.
Orthop J Sports Med
January 2025
Department of Sports Medical Center, Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea.
Background: Graft selection is an important part of preoperative planning for anterior cruciate ligament reconstruction (ACLR). In addition, ACLR with the remnant preservation technique has recently gained attention due to potential benefit in bone-tendon healing, graft revascularization, and proprioceptive nerve remodeling. However, the ideal graft choice remains controversial, and there is limited research comparing autograft and allograft in ACLR with remnant preservation.
View Article and Find Full Text PDFRegional Patellar Tendon Strain in the Short- and Long-term After ACL Reconstruction Using Bone-Patellar Tendon-Bone Autograft.
Am J Sports Med
January 2025
Department of Physical Therapy, University of Delaware, Newark, Delaware, USA.
Background: Anterior cruciate ligament reconstruction (ACLR) often involves harvesting a bone-patellar tendon-bone (BPTB) autograft. How graft harvest affects tendon strain across the 3 distinct regions (medial, lateral, and central) is not known.
Purpose: To (1) quantify strain in the 3 regions of the patellar tendon during 60% of maximum voluntary isometric contraction (MVIC) in 90° of knee flexion and (2) assess how effort level in 2 different knee joint angles (60° and 90°) impacts strain in the medial and lateral regions of the patellar tendon, in 2 cohorts of patients after ACLR using a BPTB autograft (one group <24 months after surgery and another group ≥24 months after surgery).
Knee Pain Is Not Always the Knee.
JBJS Rev
January 2025
Adult Reconstruction, Orthopedic Surgery Department, Lenox Hill Hospital Northwell Health, New York, New York.
» Lumbar spine pathology is a known cause of referred pain to the lower extremities and should be investigated as a possible source of knee pain, especially with patients in their sixth decade.» While primary knee pathology is common, spinal pathology should always be considered in older patients presenting with knee pain, especially in atraumatic cases where knee imaging does not correlate with complaints or examination findings.» Lumbar (L) 3-4 pathology is most commonly affected in referred knee pain, with the 2 most common pathologies being spinal stenosis and disc herniation.
View Article and Find Full Text PDFReturn to Sport and Graft Failure Rates After Primary Anterior Cruciate Ligament Reconstruction With a Bone-Patellar Tendon-Bone Versus Hamstring Tendon Autograft: A Systematic Review and Meta-analysis.
Am J Sports Med
January 2025
Department of Orthopedic Surgery, Boston Medical Center, Boston, Massachusetts, USA.
Background: Anterior cruciate ligament (ACL) tears are frequent injuries in athletes that often require surgical reconstruction so that patients may return to their previous levels of performance. While existing data on patient-reported outcomes are similar between bone-patellar tendon-bone (BTB) and hamstring tendon (HT) autografts, the literature regarding return to sport (RTS), return to previous levels of sport activity, and graft failure rate remains limited.
Purpose: To compare rates of RTS, return to previous activity levels, and graft retears among athletes undergoing primary ACL reconstruction using a BTB versus HT autograft.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!