Article
Biotechnology & Applied Microbiology
Edward R. Floyd, Ariel N. Rodriguez, Kari L. Falaas, Gregory B. Carlson, Jorge Chahla, Andrew G. Geeslin, Robert F. LaPrade
Summary: This study discusses the impact of posterior medial meniscus root tears (PMMRTs) on the progression of osteoarthritis (OA) and the consequences of nonanatomic root repairs, finding that the injuries lead to an increase in contact pressure in the medial compartment and a decrease in contact area. Through a case series, it is discovered that nonanatomic repairs can result in meniscal extrusion and symptomatic meniscal extrusion.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Orthopedics
Philipp W. Winkler, Nyaluma N. Wagala, Jonathan D. Hughes, James J. Irrgang, Freddie H. Fu, Volker Musahl
Summary: Meniscal allograft root tears were predominant, associated with younger patient age, and more often observed when using the suture-only fixation technique versus the bone block fixation technique. Torn meniscal allografts were associated with early surgical graft failure when compared with intact meniscal allografts, resulting in a significantly lower 1-year survival rate.
AMERICAN JOURNAL OF SPORTS MEDICINE
(2021)
Review
Orthopedics
Hongwei Zhan, Zhongcheng Liu, Yaobin Wang, Yi Chen, Fei Teng, Ao Yang, Yuchen Tang, Yayi Xia, Meng Wu, Jin Jiang
Summary: This study aims to systematically review and meta-analyze the factors associated with concomitant medial meniscus extrusion (MME) in patients with osteoarthritis (OA) or medial meniscal tears (MMT). Results showed that radiographic OA, bone marrow lesions, cartilage damage, and higher body mass index (BMI) were significantly associated with MME in OA patients, while medial meniscal root and radial tears were significantly associated with increased risk of MME in patients with MMT.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Review
Orthopedics
Robert H. Brophy, R. Garrett Steinmetz, Matthew Smith, Matthew J. Matava
Summary: Injuries to the medial meniscus meniscocapsular junction, known as ramp lesions, are common in anterior cruciate ligament injuries. Magnetic resonance imaging is useful for diagnosis, and arthroscopic visualization is considered the current benchmark. The optimal treatment and rehabilitation for ramp lesions are still debated.
JOURNAL OF THE AMERICAN ACADEMY OF ORTHOPAEDIC SURGEONS
(2022)
Review
Orthopedics
Daniel Farivar, Mario Hevesi, Luc M. Fortier, Eric Azua, Robert F. LaPrade, Jorge Chahla
Summary: There is substantial heterogeneity in both the measurement techniques and reported values of meniscal extrusion in knees with posterior medial meniscus root tears (PMMRTs). Further studies should aim to provide clear descriptions of the measurement method and have uniform measurement methodology for better comparisons and pooling between studies.
AMERICAN JOURNAL OF SPORTS MEDICINE
(2023)
Review
Orthopedics
Mark T. Langhans, Abhinav Lamba, Daniel B. F. Saris, Patrick Smith, Aaron J. Krych
Summary: This review examines the pathophysiology, diagnosis, treatment, and future directions for investigation regarding meniscus extrusion. Meniscus extrusion leads to altered knee biomechanics and accelerated knee joint degeneration. Techniques such as meniscus centralization and meniscotibial ligament repair have shown promising biomechanical, animal model, and early clinical results.
CURRENT REVIEWS IN MUSCULOSKELETAL MEDICINE
(2023)
Review
Orthopedics
Loic Geffroy
Summary: Menisci are crucial for knee biomechanics and cartilage protection, especially in children and adolescents. Traumatic lesions are common in normal menisci, while atraumatic lesions, especially in discoid menisci, are more specific to children. MRI is essential for diagnosis and guiding surgery in discoid meniscal pathology.
ORTHOPAEDICS & TRAUMATOLOGY-SURGERY & RESEARCH
(2021)
Article
Orthopedics
Kathryn G. Anderson, Sasha Carsen, Zachary Stinson, Indranil Kushare, Craig J. Finlayson, Marie-Lyne Nault, R. Jay Lee, Brian M. Haus, Gregory A. PRiSM Meniscus Res Interest Grp, Gregory Schmale
Summary: This study retrospectively reviewed the clinical manifestations and operative treatments of children with discoid medial menisci from multiple centers in North America. The results showed that the symptoms and treatments for discoid medial menisci in children were similar to those for discoid lateral menisci.
AMERICAN JOURNAL OF SPORTS MEDICINE
(2023)
Article
Orthopedics
Chloe Labarre, Seong Hwan Kim, Nicolas Pujol
Summary: Meniscal tears are less common during multi-ligament knee injuries (MLKI) compared to isolated anterior cruciate ligament (ACL) injuries. The severity of ligament injuries and the side of the injured collateral ligament influence the type and incidence of meniscal damage. A delayed procedure does not increase the rate of meniscal lesions, but does influence the type of treatment.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2023)
Article
Orthopedics
Nicholas C. Duethman, Ryan R. Wilbur, Bryant M. Song, Michael J. Stuart, Bruce A. Levy, Christopher L. Camp, Aaron J. Krych
Summary: This study evaluated treatment trends, outcomes, and failure rates in young patients with lateral meniscal tears. The findings showed an increase in repair treatment over time, greater improvement in IKDC scores after repair compared to meniscectomy, and similar rates of reoperation, symptomatic osteoarthritis, and failure between the two treatment modalities.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2021)
Article
Orthopedics
Yau Hong Ng, Si Heng Sharon Tan, Andrew Kean Seng Lim, James Hoipo Hui
Summary: This study aimed to evaluate the mid- to long-term outcomes of arthroscopic meniscoplasty for discoid lateral meniscus in children and adolescents, showing that the surgery leads to good outcomes in the medium to long term, and that concomitant procedures such as meniscal repair or partial meniscectomy do not significantly affect the outcomes.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Orthopedics
Matthew Hampton, Graeme Hancock, Antonios Christou, Fazal Ali, Nicolas Nicolaou
Summary: This study found that MRI is not sensitive in identifying tears in discoid menisci. Clinical findings cannot effectively differentiate between torn and unstable menisci, and pre-operative scores are not a good predictor for meniscal tears.
KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
(2021)
Article
Orthopedics
Kosuke Nakagawa, Shuhei Otsuki, Tomohiko Murakami, Yoshinori Okamoto, Nobuhiro Okuno, Hitoshi Wakama, Shunsuke Sezaki, Kuniaki Ikeda, Tomohiro Okayoshi, Masahi Neo
Summary: Wrapping treatment for meniscal horizontal tears induced better regeneration compared to horizontal tears group, especially at 16 weeks, and prevented cartilage degeneration progression effectively. The sheet scaffold used in the wrapping treatment could induce intrinsic and extrinsic repair, contributing to the restoration of meniscal function.
Article
Sport Sciences
Stine Haugaard Clausen, Soren T. Skou, Mikael Ploug Boesen, Dimitar Ivanon Radev, Engin Yeter Kurt, Camma Damsted, Per Holmich, Martin Lind, Sofus Torring, Christin Isaksen, Claus Varnum, Martin Englund, Jonas Bloch Thorlund
Summary: This study aimed to compare the differences in structural knee joint damage and patient-reported outcomes in young adults with a meniscal tear treated with early surgery or exercise and education with optional delayed surgery. The study found that the worsening of structural damage assessed by MRI was similar between the two treatment groups, and both groups had similar improvements in patient-reported outcomes.
BRITISH JOURNAL OF SPORTS MEDICINE
(2023)
Article
Orthopedics
Nadhaporn Saengpetch, Sutip Noowan, Artit Boonrod, Khananut Jaruwanneechai, Sermsak Sumanont, Chaiyanun Vijittrakarnrung
Summary: The study compared the biomechanical properties of two techniques (TPO and ASA) for repairing posterior medial meniscal root tears (PMMRT). Results showed that the ASA technique demonstrated superior biomechanical properties in terms of contact surface area and restored tibiofemoral contact mechanics to be comparable with the intact knee, while the TPO technique showed significant differences compared with the intact knee.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2023)
Article
Orthopedics
Dennis E. Kramer, Patricia E. Miller, Iman K. Berrahou, Yi-Meng Yen, Benton E. Heyworth
JOURNAL OF PEDIATRIC ORTHOPAEDICS
(2020)
Article
Orthopedics
Martha M. Murray, Braden C. Fleming, Gary J. Badger, Dennis E. Kramer, Lyle J. Micheli, Yi-Meng Yen
AMERICAN JOURNAL OF SPORTS MEDICINE
(2020)
Article
Orthopedics
Colyn J. Watkins, Caleb M. Yeung, Emily Rademacher, Dennis E. Kramer
JOURNAL OF CHILDRENS ORTHOPAEDICS
(2020)
Article
Cell & Tissue Engineering
Samuel Barnett, Gary J. Badger, Ata Kiapour, Yi-Meng Yen, Rachael Henderson, Christina Freiberger, Benedikt Proffen, Nicholas Sant, Bethany Trainor, Braden C. Fleming, Lyle J. Micheli, Martha M. Murray, Dennis E. Kramer
TISSUE ENGINEERING PART A
(2020)
Article
Orthopedics
Millicent Croman, Dennis E. Kramer, Benton E. Heyworth, Mininder S. Kocher, Lyle J. Micheli, Yi-Meng Yen
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2020)
Article
Orthopedics
Jennifer Kallini, Lyle J. Micheli, Patricia E. Miller, Dennis E. Kramer, Mininder S. Kocher, Benton E. Heyworth
Summary: Bipartite patella (BPP) is a developmental anomaly that can cause knee pain in adolescent athletes, with most cases responding well to nonoperative treatment. Surgical intervention is indicated for patients with prolonged symptoms, older age, and female gender, with a 15% risk of requiring secondary surgery for persistent or recurrent symptoms. Prospective multicenter studies are needed to determine optimal candidates for early intervention and the most effective operative techniques.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2021)
Article
Orthopedics
Benton E. Heyworth, Evan T. Zheng, Patrick Vavken, Elizabeth S. Liotta, Dennis E. Kramer, Yi-Meng Yen, Lyle J. Micheli, Mininder S. Kocher
Summary: In adolescent athletes undergoing primary ACL reconstruction, utilizing a hybrid autograft-allograft construct showed comparable short-term outcomes to using small-diameter hamstring tendon autografts alone, suggesting that hybrid grafts may not necessarily provide superior results in this population.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2021)
Article
Pediatrics
Delma Y. Jarrett, Dennis E. Kramer, Tal Laor
Summary: This study found that pediatric MCL avulsion fractures predominantly involve the attachment of the deep MCL and can be entirely non-osseous, especially in boys who lag in skeletal maturity. MRI may be necessary to identify these avulsions, impacting the duration of rest and knee bracing.
PEDIATRIC RADIOLOGY
(2021)
Article
Orthopedics
Kelly H. McFarlane, Ryan P. Coene, Lanna Feldman, Patricia E. Miller, Benton E. Heyworth, Dennis E. Kramer, Mininder S. Kocher, Yi-Meng Yen, Matthew D. Milewski
Summary: The study demonstrates a significant increase in the rate of acute patellar instability treatment events in paediatric and adolescent patients across the country. The number of surgeries for patellar instability has increased slightly more than the overall rate of paediatric orthopaedic surgical procedures, potentially indicating a rise in injuries and associated surgeries in children due to increased youth sports participation.
JOURNAL OF CHILDRENS ORTHOPAEDICS
(2021)
Correction
Pediatrics
Delma Y. Jarrett, Dennis E. Kramer, Tal Laor
PEDIATRIC RADIOLOGY
(2021)
Article
Orthopedics
Ata M. Kiapour, Sean W. Flannery, Martha M. Murray, Patricia E. Miller, Benedikt L. Proffen, Nicholas Sant, Gabriela Portilla, Ryan Sanborn, Christina Freiberger, Rachael Henderson, Samuel Barnett, Kirsten Ecklund, Yi-Meng Yen, Dennis E. Kramer, Lyle J. Micheli, Braden C. Fleming
Summary: The study revealed that the signal intensity values in different regions of ACL grafts and repaired ACLs vary during the healing process, with repaired ACLs showing more homogeneous and stable signal intensity values at 2 years postoperatively.
AMERICAN JOURNAL OF SPORTS MEDICINE
(2021)
Article
Orthopedics
Samuel C. Barnett, Martha M. Murray, Gary J. Badger, Yi-Meng Yen, Dennis E. Kramer
Summary: The study compared BEAR and autograft ACLR in terms of symptom resolution, muscle strength recovery, and return to sport at early time points. The BEAR group showed superior outcomes in International Knee Documentation Committee scores, Knee injury and Osteoarthritis Outcome Scores, and hamstring strength.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2021)
Article
Orthopedics
Ryan M. Sanborn, Andrea S. Bauer, Patricia E. Miller, Dennis E. Kramer, Collin J. May, Carley B. Vuillermin, Yi-Meng Yen
Summary: This study found that patients undergoing pin removal following closed reduction and percutaneous pinning for supracondylar humerus fractures commonly experienced anxiety. After pin removal, both anxiety levels and heart rates decreased. This suggests that interventions may be necessary to reduce patient anxiety in this clinical practice.
JOURNAL OF CHILDRENS ORTHOPAEDICS
(2022)
Meeting Abstract
Pediatrics
Ryan M. Sanborn, Yi-Meng Yen, Andrea S. Bauer, Patricia E. Miller, Dennis E. Kramer, Collin J. May, Carley B. Vuillermin
Article
Orthopedics
Nicole H. Goldhaber, Amanda N. Goldin, Andrew T. Pennock, Kristin Livingston, Donald S. Bae, Yi Meng Yen, Benjamin J. Shore, Dennis E. Kramer, Jason E. Jagodzinski, Benton E. Heyworth