Primary Arthroscopic Repair of the Anterior Cruciate Ligament: A Systematic Review of Clinical Outcomes

2019 ◽  
Vol 35 (12) ◽  
pp. 3318-3327 ◽  
Author(s):  
Darby A. Houck ◽  
Matthew J. Kraeutler ◽  
John W. Belk ◽  
Joshua A. Goode ◽  
Mary K. Mulcahey ◽  
...  
Keyword(s):  
Systematic Review ◽  
Anterior Cruciate Ligament ◽  
Clinical Outcomes ◽  
Cruciate Ligament ◽  
Arthroscopic Repair ◽  
Anterior Cruciate

Lateral Augmentation Procedures in Anterior Cruciate Ligament Reconstruction: Anatomic, Biomechanical, Imaging, and Clinical Evidence

2018 ◽  
Vol 47 (3) ◽  
pp. 740-752 ◽  
Author(s):  
Alexander E. Weber ◽  
William Zuke ◽  
Erik N. Mayer ◽  
Brian Forsythe ◽  
Alan Getgood ◽  
...  
Keyword(s):  
Systematic Review ◽  
Anterior Cruciate Ligament ◽  
Clinical Outcomes ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Surgical Techniques ◽  
Rotational Instability ◽  
Imaging Diagnostics ◽  
Cruciate Ligament Reconstruction ◽  
Anterior Cruciate

Background: There has been an increasing interest in lateral-based soft tissue reconstructive techniques as augments to anterior cruciate ligament reconstruction (ACLR). The objective of these procedures is to minimize anterolateral rotational instability of the knee after surgery. Despite the relatively rapid increase in surgical application of these techniques, many clinical questions remain. Purpose: To provide a comprehensive update on the current state of these lateral-based augmentation procedures by reviewing the origins of the surgical techniques, the biomechanical data to support their use, and the clinical results to date. Study Design: Systematic review. Methods: A systematic search of the literature was conducted via the Medline, EMBASE, Scopus, SportDiscus, and CINAHL databases. The search was designed to encompass the literature on lateral extra-articular tenodesis (LET) procedures and the anterolateral ligament (ALL) reconstruction. Titles and abstracts were reviewed for relevance and sorted into the following categories: anatomy, biomechanics, imaging/diagnostics, surgical techniques, and clinical outcomes. Results: The search identified 4016 articles. After review for relevance, 31, 53, 27, 35, 45, and 78 articles described the anatomy, biomechanics, imaging/diagnostics, surgical techniques, and clinical outcomes of either LET procedures or the ALL reconstruction, respectively. A multitude of investigations were available, revealing controversy in addition to consensus in several categories. The level of evidence obtained from this search was not adequate for systematic review or meta-analysis; thus, a current concepts review of the anatomy, biomechanics, imaging, surgical techniques, and clinical outcomes was performed. Conclusion: Histologically, the ALL appears to be a distinct structure that can be identified with advanced imaging techniques. Biomechanical evidence suggests that the anterolateral structures of the knee, including the ALL, contribute to minimizing anterolateral rotational instability. Cadaveric studies of combined ACLR-LET procedures demonstrated overconstraint of the knee; however, these findings have yet to be reproduced in the clinical literature. The current indications for LET augmentation in the setting of ACLR and the effect on knee kinematic and joint preservation should be the subject of future research.

scholarly journals Comparing the Use of Flexible and Rigid Reaming Systems Through an Anteromedial Portal for Femoral Tunnel Creation During Anterior Cruciate Ligament Reconstruction: A Systematic Review

2021 ◽  
Vol 9 (10) ◽  
pp. 232596712110357
Author(s):  
Thomas E. Moran ◽  
Anthony J. Ignozzi ◽  
Brian C. Werner
Keyword(s):  
Systematic Review ◽  
Anterior Cruciate Ligament ◽  
Clinical Outcomes ◽  
Literature Search ◽  
Femoral Tunnel ◽  
Cruciate Ligament ◽  
Posterior Wall ◽  
Anteromedial Portal ◽  
Bending Angle ◽  
Anterior Cruciate

Background: Recent studies have suggested that femoral tunnel drilling during anterior cruciate ligament (ACL) reconstruction (ACLR) with the use of a flexible reaming system through a standard anteromedial portal (AM-FR) may result in a different tunnel geometry compared with a rigid reamer through an accessory anteromedial portal with hyperflexion (AM-RR). Purpose: To summarize radiologic, anatomic, and clinical outcomes from available studies that directly compared the use of AM-FR versus AM-RR for independent femoral tunnel creation during ACLR. Study Design: Systematic review; Level of evidence, 4. Methods: A literature search was performed using the MEDLINE (PubMed) and Web of Science databases to identify all studies that directly compared radiologic, anatomic, and clinical outcomes between the use of AM-FR and AM-RR. The literature search, data recording, and methodological quality assessment was performed by 2 independent reviewers. The outcomes analyzed included resultant ACL graft positioning and graft bending angle; femoral tunnel positioning, aperture morphology, length, and widening; posterior wall breakage; and distance from various posterolateral knee structures. Results: A total of 13 studies met the eligibility criteria for inclusion. There was no difference in femoral tunnel aperture location between techniques. There were conflicting findings among studies regarding which technique resulted in a more acute graft bending angle. One study reported greater femoral tunnel widening upon follow-up with the use of AM-FR. AM-FR produced longer and more anteverted femoral tunnels than did AM-RR. The difference in tunnel length was significant and more prominent in lesser degrees of knee flexion. With AM-FR, femoral tunnels were farther from the lateral collateral ligament and peroneal nerve, and 1 of 5 studies had fewer reports of posterior wall breakage. There has been no literature comparing the clinical or functional outcomes of these techniques. Conclusion: Although no clinical studies exist comparing AM-FR and AM-RR for femoral tunnel creation during ACLR, both systems allow for reproducible positioning of an anatomic femoral tunnel aperture. The use of AM-FR results in longer and more anteverted femoral tunnels than using AM-RR, with exit points on the lateral femur that are different but safe. Surgeons should be aware of the technical differences with each method; however, further study is needed to identify any clinically important difference that results.

scholarly journals Five-Strand Hamstring Autografts for Anterior Cruciate Ligament Reconstruction: A Systematic Review

2019 ◽  
Vol 7 (2) ◽  
pp. 232596711982609 ◽  
Author(s):  
John-Rudolph H. Smith ◽  
Darby A. Houck ◽  
Jessica A. Hart ◽  
Armando F. Vidal ◽  
Rachel M. Frank ◽  
...  
Keyword(s):  
Systematic Review ◽  
Anterior Cruciate Ligament ◽  
Clinical Outcomes ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Cruciate Ligament Reconstruction ◽  
The Mean ◽  
Anterior Cruciate ◽  
Graft Diameter

Background: Recent studies have described surgical techniques to increase the hamstring graft diameter for anterior cruciate ligament reconstruction (ACLR), particularly for 5-strand hamstring (5HS) autografts. Purpose: To review the literature examining the biomechanical and clinical outcomes of 5HS autografts for ACLR. Study Design: Systematic review; Level of evidence, 3. Methods: A systematic review using PRISMA (Preferred Reporting Items for Systematic Meta-Analyses) guidelines was performed by searching PubMed, Embase, and the Cochrane Library for studies reporting the biomechanical and clinical outcomes of 5HS autografts. All English-language literature published from 2012 to 2018 that reported the biomechanical properties of 5HS grafts and/or clinical outcomes after ACLR with 5HS autografts with a minimum 1-year follow-up was reviewed by 2 independent reviewers. Graft diameter, stiffness, displacement, strength, failure rates, anteroposterior knee laxity, and patient-reported outcome scores were collected. The study methodology was evaluated using the modified Coleman Methodology Score. Results: Two biomechanical and 3 clinical studies (1 with level 2 evidence, 2 with level 3 evidence) were included. The biomechanical studies compared the results of fourteen 4-strand hamstring (4HS) and fourteen 5HS graft specimens for ACLR (ovine grafts, n = 12; cadaveric grafts, n = 16) and found no significant differences in ultimate load, stiffness, displacement, and stress relaxation ( P > .05), likely attributed to insufficient incorporation of the fifth strand. The mean 5HS cadaveric graft diameter (8.2 mm) was significantly greater than that of 4HS grafts (6.8 mm) ( P = .002), whereas the mean ovine graft diameters were not significantly different (4HS, 5.2 mm; 5HS, 5.3 mm) ( P > .05). Two clinical studies compared the outcomes after ACLR of 53 patients with a 4HS autograft versus 62 patients with a 5HS autograft, while 1 clinical study reported the outcomes of 25 patients after ACLR with a 5HS autograft (mean age, 28.7 years; mean follow-up, 24.8 months). The overall mean diameter for 4HS and 5HS autografts was 8.4 and 9.1 mm, respectively. There was no significant difference in failure rates between 4HS and 5HS autografts ( P = .82). None of the comparative studies reported significant differences in any clinical outcomes ( P > .05 for all). Conclusion: The available literature on traditional 4HS and 5HS autografts for ACLR is limited. Of the available data, clinical and biomechanical studies suggest no difference in outcomes after ACLR with either graft construct. Additional research is needed to determine whether creating a 5HS graft is beneficial.

scholarly journals Anterior Cruciate Ligament Reconstruction in Patients Older Than 50 Years: A Systematic Review and Meta-analysis

2020 ◽  
Vol 8 (4) ◽  
pp. 232596712091569
Author(s):  
Chong-Wei Tan ◽  
Wei-Hsiu Hsu ◽  
Pei-An Yu ◽  
Chi-Lung Chen ◽  
Liang-Tseng Kuo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Anterior Cruciate Ligament ◽  
Cohort Studies ◽  
Clinical Outcomes ◽  
Cruciate Ligament ◽  
Meta Analysis ◽  
Middle Aged ◽  
Aged Patients ◽  
Younger Patients ◽  
Anterior Cruciate

Background: There is no consensus regarding the best treatment approach for middle-aged patients with anterior cruciate ligament (ACL) injuries. Chronic ACL-deficient knees are often associated with instability as well as secondary meniscal and cartilage lesions. ACL reconstruction (ACLR) has achieved satisfactory outcomes in younger patients; however, the effectiveness and safety of ACLR in middle-aged patients remain uncertain. Purpose: To compare the patient-reported functional scores, arthrometric outcomes, and complications of primary ACLR between older (≥50 years) and younger (<50 years) patients. Study Design: Systematic review; Level of evidence, 3. Methods: We conducted a systematic review of cohort studies that compared the clinical outcomes of ACLR between patients aged ≥50 years and those aged <50 years. The Cochrane Central Register of Controlled Trials, Embase, and MEDLINE databases were searched for relevant studies. The Methodological Index for Non-randomized Studies (MINORS) criteria was used to assess the risk of bias and conducted a random-effects meta-analysis to combine the data, and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to evaluate the overall quality of the body of retrieved evidence. The primary outcome was knee functional outcomes, and secondary outcomes were arthrometric outcomes of ACLR and complications. Results: This study included 4 retrospective cohort studies with a total of 287 participants (129 in the older group and 158 in the younger group). All included studies reported significant improvements in clinical outcomes in both groups after ACLR. No significant differences were noted in the improvement of International Knee Documentation Committee (IKDC) scores (mean difference [MD], 0.20 [95% CI, −2.65 to 3.05]; P = .89) and Lysholm scores (MD, −1.98 [95% CI, −6.93 to 2.98]; P = .43) between the 2 groups. No significant differences were observed in anteroposterior stability or risk of complications between the groups. Conclusion: ACLR may be performed in middle-aged patients (≥50 years) without concern for inferior clinical and arthrometric results compared with younger patients (<50 years).

Sport-Specific Yearly Risk and Incidence of Anterior Cruciate Ligament Tears in High School Athletes: A Systematic Review and Meta-Analysis

PEDIATRICS ◽  
2016 ◽  
Vol 137 (Supplement 3) ◽  
pp. 561A-561A
Author(s):  
Alex L. Gornitzky ◽  
Ariana Lott ◽  
Joseph L. Yellin ◽  
Peter D. Fabricant ◽  
Theodore J. Ganley
Keyword(s):  
High School ◽  
Systematic Review ◽  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Meta Analysis ◽  
High School Athletes ◽  
Anterior Cruciate ◽  
Cruciate Ligament Tears
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