Near full thickness quadriceps tendon tear

2020 ◽  
Author(s):  
Jahinover Mazo ◽  
Paoulina Ivanova ◽  
Yuliya Mazo ◽  
Zohaib Khan
Keyword(s):  
Quadriceps Tendon ◽  
Full Thickness ◽  
Tendon Tear

scholarly journals Quadriceps Tendon-Bone Full-Thickness Autograft: Reproducible and Easy Harvesting Technique Using Simple Surgical Tools

2021 ◽  
Author(s):  
Konrad Malinowski ◽  
Jan Paszkowski ◽  
Marcin Mostowy ◽  
Adrian Góralczyk ◽  
Robert F. LaPrade ◽  
...  
Keyword(s):  
Quadriceps Tendon ◽  
Full Thickness ◽  
Surgical Tools ◽  
Harvesting Technique

scholarly journals Treatment of Full-Thickness Rotator Cuff Tendon Tear Using Umbilical Cord Blood-Derived Mesenchymal Stem Cells and Polydeoxyribonucleotides in a Rabbit Model

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Dong Rak Kwon ◽  
Gi-Young Park ◽  
Sang Chul Lee
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Motion Analysis ◽  
Rabbit Model ◽  
Full Thickness ◽  
Tendon Tear ◽  
Rotator Cuff Tendon ◽  
Proliferating Cell ◽  
Tear Size

Objective. The aim of this study was to investigate regenerative effects of ultrasound- (US-) guided injection with human umbilical cord blood-derived mesenchymal stem cells (UCB-MSCs) and/or polydeoxyribonucleotide (PDRN) injection in a chronic traumatic full-thickness rotator cuff tendon tear (FTRCTT) in a rabbit model. Methods. Rabbits (n=32) were allocated into 4 groups. After a 5 mm sized FTRCTT just proximal to the insertion site on the subscapularis tendon was created by excision, the wound was immediately covered by a silicone tube to prevent natural healing. After 6 weeks, 4 injectants (0.2 mL normal saline, G1-SAL; 0.2 mL PDRN, G2-PDRN; 0.2 mL UCB-MSCs, G3-MSC; and 0.2 mL UCB-MSCs with 0.2 ml PDRN, G4-MSC + PDRN) were injected into the FTRCTT under US guidance. We evaluated gross morphologic changes on all rabbits after sacrifice. Masson’s trichrome, anti-type 1 collagen antibody, bromodeoxyuridine, proliferating cell nuclear antigen, vascular endothelial growth factor, and platelet endothelial cell adhesion molecule stain were performed to evaluate histological changes. Motion analysis was also performed. Results. The gross morphologic mean tendon tear size in G3-MSC and G4-MSC + PDRN was significantly smaller than that in G1-SAL and G2-PDRN (p<0.05). However, there were no significant differences in the tendon tear size between G3-MSC and G4-MSC + PDRN. In G4-MSC + PDRN, newly regenerated collagen type 1 fibers, proliferating cell activity, angiogenesis, walking distance, fast walking time, and mean walking speed were greater than those in the other three groups on histological examination and motion analysis. Conclusions. Coinjection of UCB-MSCs and PDRN was more effective than UCB-MSC injection alone in histological and motion analysis in a rabbit model of chronic traumatic FTRCTT. However, there was no significant difference in gross morphologic change of tendon tear between UCB-MSCs with/without PDRN injection. The results of this study regarding the combination of UCB-MSCs and PDRN are worth additional investigations.

scholarly journals Continuous-Loop Tape Technique Has Greater Stiffness and Less Elongation Compared With Tied-Suture Fixation of Full-Thickness All–Soft Tissue Quadriceps Tendon Autografts

2021 ◽  
Vol 9 (11) ◽  
pp. 232596712110541
Author(s):  
Christopher M. Gibbs ◽  
Philipp W. Winkler ◽  
Robert T. Tisherman ◽  
Calvin K. Chan ◽  
Theresa A. Diermeier ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Ultimate Load ◽  
Quadriceps Tendon ◽  
Tendon Graft ◽  
Suture Technique ◽  
Suture Fixation ◽  
Full Thickness ◽  
Quadriceps Tendon Graft ◽  
Significant Difference ◽  
Permanent Elongation

Background: Many graft fixation techniques are utilized for full-thickness soft tissue quadriceps tendon autografts during anterior cruciate ligament reconstruction (ACLR). Purpose: To determine the tensile properties of all–soft tissue quadriceps tendon graft fixation using a tied-suture versus continuous-loop tape technique. It was hypothesized that the continuous-loop tape technique would have less cyclic elongation and greater ultimate load to failure and stiffness compared with a commonly used tied-suture technique. Study Design: Controlled laboratory study. Methods: Sixteen fresh-frozen human knee specimens were used to harvest a full-thickness all–soft tissue quadriceps tendon graft; half were secured using a Krackow suture technique with 2 braided sutures, and half were secured using a continuous-loop tape suspensory fixation button with a rip-stop stitch. Cyclic and permanent elongation, toe- and linear-region stiffness, and ultimate load were determined. Statistical analysis was performed at P <.05. Results: The tied-suture fixation group demonstrated significantly higher permanent elongation (11.7 ± 3.6 vs 4.2 ± 1.0 mm, P < .001) and cyclic elongation (5.9 ± 1.3 vs 2.0 ± 0.4 mm, P < .001) compared with the continuous-loop tape fixation group. There was a significantly higher linear-region stiffness with continuous-loop tape fixation compared with tied-suture fixation (98.8 ± 12.7 vs 85.5 ± 7.5 N/mm, P = .022). No significant difference in ultimate load between groups (517.1 ± 149.2 vs 465.6 ± 64.6 N) was found. The mode of failure was tendon pull-through for the continuous-loop tape group and suture breakage in the tied-suture group ( P < .001). Conclusion: Continuous-loop tape fixation is superior to tied-suture fixation in regard to elongation and stiffness for all–soft tissue quadriceps tendon grafts, but there was no significant difference in ultimate load. Clinical Relevance: Continuous-loop tape fixation of all–soft tissue quadriceps tendon grafts for ACLR is a valid technique with superior tensile properties.

Regenerative effects of mesenchymal stem cells by dosage in a chronic rotator cuff tendon tear in a rabbit model

2019 ◽  
Vol 14 (11) ◽  
pp. 1001-1012
Author(s):  
Dong Rak Kwon ◽  
Gi-Young Park ◽  
Sang Chul Lee
Keyword(s):  
Rotator Cuff ◽  
Motion Analysis ◽  
Rabbit Model ◽  
Optimal Dose ◽  
Human Umbilical Cord Blood ◽  
Human Umbilical Cord ◽  
Therapeutic Effects ◽  
Full Thickness ◽  
Tendon Tear ◽  
Rotator Cuff Tendon

Aim: We investigated the therapeutic effects and optimal dose of human umbilical cord blood (UCB)-derived mesenchymal stem cell (MSC) injection in a chronic full-thickness rotator cuff tendon tear. Methods: Rabbits (n = 30) were allocated into three groups (normal saline, G1-Sal; 1 × 106 cells UCB-MSC, G2-Low; 2 × 106 cells UCB-MSC, G3-High). Injections were done into the chronic full-thickness rotator cuff tendon tear 6 weeks after a full-thickness tendon tear of the subscapularis was created. Gross & histologic evaluation and motion analysis was done at pre and 4 weeks post-injection. Results: There were no significant differences in tear size and motion analysis parameters 4 weeks after injection between G2-Low and G3-High. Conclusion: The benefits of UCB-MSCs are not dose-dependent in a rabbit model.

Reconstruction of a chronic quadriceps tendon tear in a body builder

2006 ◽  
Vol 14 (10) ◽  
pp. 1007-1011 ◽  
Author(s):  
Paolo Leopardi ◽  
Giovanni di Vico ◽  
Donato Rosa ◽  
Fabrizio Cigala ◽  
Nicola Maffulli
Keyword(s):  
Quadriceps Tendon ◽  
Tendon Tear ◽  
Body Builder

Full-thickness quadriceps tendon

2001 ◽  
Vol 17 (7) ◽  
pp. 781-783 ◽  
Author(s):  
Daniel Slullitel ◽  
Adrián Blasco ◽  
Gabriel Periotti
Keyword(s):  
Quadriceps Tendon ◽  
Full Thickness

scholarly journals Atraumatic quadriceps tendon tear associated with calcific tendonitis

2012 ◽  
Vol 2012 (nov22 2) ◽  
pp. bcr2012007031-bcr2012007031 ◽  
Author(s):  
S. G. F. Abram ◽  
A. D. Sharma ◽  
C. Arvind
Keyword(s):  
Quadriceps Tendon ◽  
Tendon Tear ◽  
Calcific Tendonitis

scholarly journals Ultrasound Imaging of Quadriceps Tendon in a Recreational Golfer

POCUS Journal ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 58-59
Author(s):  
Shawn Felton ◽  
Arie Van Duijn
Keyword(s):  
Ultrasound Imaging ◽  
Surgical Repair ◽  
Rectus Femoris ◽  
Quadriceps Tendon ◽  
Ultrasound Images ◽  
Full Thickness ◽  
Post Injury ◽  
Vastus Intermedius ◽  
Pine Straw

The patient was a 69-year-old recreational golfer who injured his right . While walking between the 9th and 18th holes, he slipped on pine straw. Ultrasound images of the quadriceps tendon post-injury revealed a full-thickness tear of the Quadriceps tendon, Rectus Femoris and Vastus intermedius. The diagnosis was confirmed through MRI arthrogram imaging. The hypoechoic finding in the ultrasound exam demonstrated the imaging to be as precise in diagnosing a full thickness tear as the MRI. The patient underwent surgical repair of the Quadriceps Tendon and is currently progressing in rehabilitation.

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