A Preclinical Model to Study the Influence of Graft Force on the Healing of the Anterior Cruciate Ligament Graft

In conclusion, we have developed a novel ACL reconstruction model that can reproducibly produce two ACL graft force patterns. This model would permit further research on how ACL graft forces may affect subsequent graft healing, maturation, and function. [...] Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: Journal of Knee Surgery - Category: Orthopaedics Authors: Tags: Original Article Source Type: research

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ConclusionsKneeling was the most challenging activity in terms of creating considerable levels of anterior knee pain in patients who had undergone an ACL reconstruction using a BPTB graft. Other knee activities, however, did not create moderate or severe degrees of anterior knee pain. Both anterior knee pain and numbness at the proximal leg improved over time.Trial registration number: TCTR2018–0630002.
Source: Asia-Pacific Journal of Sports Medicine, Arthroscopy, Rehabilitation and Technology - Category: Sports Medicine Source Type: research
This study seeks to quantify the contribution of the medial hamstrings to knee stability.MethodsValgus knee laxity, anterior tibial translation, and rotational motion were measured in eight fresh-frozen cadaveric knees after forces were applied on the tibia in each plane (coronal, sagittal, and axial). Four muscle loading conditions were tested: (1) physiologic fully loaded pes anserinus, (2) semitendinosus only loaded, (3) gracilis only loaded, and (4) unloaded pes anserinus. The protocol was then repeated with the ACL transected.ResultsIn the ACL intact knee, the neutral position of the tibia with an unloaded pes anserin...
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research
ConclusionTibial tunnel widening after ACLR using hamstring tendon autograft is significantly greater with suspensory femoral fixation and a bioabsorbable tibial interference screw when compared to an all-inside technique at a median follow-up of 2  years. The clinical relevance of this work lies in the rebuttal of concerns arising from biomechanical studies regarding the possibility of increased tunnel widening with an all-inside technique.Level of evidenceIII.
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research
CONCLUSIONS Our study proved a higher percentage of ligamentisation and healed grafts into the bone as well as a lower occurrence of graft failure in the group with PRF compared to the group without the PRF application, namely both in the 6 th and in the 12 th month. Nonetheless, the differences between the two groups assessed at the same time were not statistically significant. Key words: anterior cruciate ligament, arthroscopy, anatomic ACL reconstruction, magnetic resonance imaging of the graft, platelet-rich fibrin, graft healing, MRI signal intensity of the graft. PMID: 30383531 [PubMed - in process]
Source: Acta Orthopaedica - Category: Orthopaedics Authors: Tags: Acta Chir Orthop Traumatol Cech Source Type: research
ConclusionACL reconstruction in patient with popliteal artery ligation is challenging. A tourniquet-less technique using a cold saline and epinephrine solution can be successfully done for pressure controlled into the knee to preserve the collateral arteries flow to the distal limb while still permitting acceptable visual in operative field with good outcome after the surgery.Graphical abstract
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
To compare the clinical outcomes and adverse events associated with irradiated and nonirradiated allografts in anterior cruciate ligament (ACL) reconstruction.
Source: Arthroscopy - Journal of Arthroscopic and Related Surgery - Category: Surgery Authors: Tags: Meta-analysis Source Type: research
Publication date: Available online 29 October 2018Source: Arthroscopy TechniquesAuthor(s): Michael G. SaperAbstractAnterior cruciate ligament (ACL) injuries are common among adolescent athletes and are rising with increased participation in higher level athletics at earlier ages. In these young patients, often with open physes, soft tissue grafts continue to be the primary graft choice for ACL reconstruction. Reinjury continues to be a concern in this high-risk age group, with failure rates 2 to 3 times higher than in adults. Recently, primary ACL reconstruction with suture tape augmentation/reinforcement has been describe...
Source: Arthroscopy Techniques - Category: Surgery Source Type: research
AbstractAnterior tibia translation (ATT) is mainly prevented by the anterior cruciate ligament. Passive ATT tests are commonly used to diagnose an anterior cruciate ligament (ACL) injury, to select patients for an ACL reconstruction (ACLR), and as an outcome measure after an ACLR. The aim of this review was to present an overview of possible factors determining ATT. A second purpose was to give a summary of the ATT measured in the literature in healthy, ACL-injured and ACLR knees and a comparison between those groups. A literature search was conducted with PubMed. Inclusion criteria were full-text primary studies published...
Source: Musculoskeletal Surgery - Category: Orthopaedics Source Type: research
AbstractPurposeTo investigate the effects of graft source, time since surgery, age, and sex on unilateral and symmetry-based measures of knee extension strength among individuals with ACL reconstruction (ACLR).MethodsThree hundred and eight individuals aged 13 –40 years old with primary, unilateral ACLR in the last 60 months were enrolled in this multi-site clinical measurement study. Participants completed bilateral knee extension maximal voluntary isometric contraction (MVIC) torque assessments which were normalized to body mass (Nm/kg) and limb sym metry indices (LSI) were calculated. The effects of graf...
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research
The use of a quadriceps tendon-patellar bone (QTPB) autograft provides an alternative procedure in primary reconstruction of the anterior cruciate ligament (ACL). Using the press-fit technique for femoral fixa...
Source: BMC Musculoskeletal Disorders - Category: Orthopaedics Authors: Tags: Research article Source Type: research
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