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Am J Sports Med 2020 Jun 24:363546520931854. Epub 2020 Jun 24.

OrthoSport Victoria Research Unit, Richmond, Australia.

Background: Recent biomechanical studies have demonstrated that the Kaplan fibers (KFs) of the iliotibial band play a role in the control of anterolateral rotation of the knee. However, controversy exists regarding whether the KFs are injured in conjunction with anterior cruciate ligament (ACL) injury.

Purpose: To establish the prevalence of radiological injury to the KFs in the ACL-injured knee; to evaluate the effect of the time interval between injury and magnetic resonance imaging (MRI) on diagnosis of KF injury; and to assess for any association between KF injury and other qualitative radiological findings. Read More

Injury 2020 May 6. Epub 2020 May 6.

Department of Orthopaedics Surgery, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea. Electronic address:

Purpose: Valgus injury of high energy of the lateral bumper impact can lead blows to the inside of the knee that push the knee outwards or indirect injury where a varus force is applied to the contralateral knee, which injury pattern named as "Windswept injury mechanism" in this study. The objective of this study was to establish injury pattern in the contralateral side knee on the basis of this pattern recognition to enhance a diagnosis of interrelated osseous and soft-tissue injuries.

Methods: Sixteen patients by "Windswept injury mechanism" were identified, who visited a level 1 trauma center between Jan 2007 and Dec 2016. Read More

Arthroscopy 2020 06;36(6):1687-1689

University of Pittsburgh.

The anterolateral complex (ALC) of the knee comprises multiple layers, with continued debate on the identity and function of the structures of the ALC. The Segond fracture, long considered pathognomonic of an anterior cruciate ligament injury, has now been shown to have several attachments to soft tissues of the ALC. To the extent that a Segond fracture, or injury to the ALC more broadly, increases knee rotatory instability in vivo is a question of ongoing investigation. Read More

J Pediatr Orthop 2020 Jul;40(6):271-276

Departments of Orthopaedic Surgery, Division of Sports Medicine.

Background: Missed posterolateral corner (PLC) injuries are a known cause of anterior cruciate ligament reconstruction (ACL) failure in the adult population. Failed ACL reconstruction causes significant morbidity in the skeletally immature pediatric population. There is little literature on the character and potential significance of PLC injuries in skeletally immature patients. Read More

Skeletal Radiol 2020 May 29. Epub 2020 May 29.

Stoke Mandeville Hospital, Buckingahmshire Healthcare NHS Trust, Aylesbury, UK.

Objective: To delineate the spectrum of traumatic knee injuries associated with injury of the anterolateral ligament of the knee (ALL).

Materials And Methods: A retrospective review of 200 MRI scans undertaken for acute knee trauma was performed. In each scan, the ALL was scored as normal, sprained or torn. Read More

Ann Med Surg (Lond) 2020 Jun 25;54:93-96. Epub 2020 Apr 25.

Department of Orthopaedic Surgery, King Saud University, Riyadh, Saudi Arabia.

Introduction: Meniscal injuries are one of the most common musculoskeletal injuries around the knee affecting patients of different genders, ages and activity levels. These injuries could be acute or chronic tears that cause pain and mechanical symptoms based on the injury severity and whether it is displaced and entrapped in an abnormal location within the knee or not. Advances in magnetic resonance imaging (MRI) allowed us to have a better understanding of multiple bucket handle meniscal tear patterns with its specific MRI signs which have been reported in the literature. Read More

Am J Sports Med 2020 Jul 14;48(8):1929-1936. Epub 2020 May 14.

Department of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany.

Background: In current magnetic resonance imaging (MRI) of the knee, injuries to the anterolateral ligament complex (ALC) and the Kaplan fibers (KFs) are not routinely assessed. As ruptures of the KFs contribute to anterolateral rotatory instability in the anterior cruciate ligament-deficient knee, detecting these injuries on MRI may help surgeons to individualize treatment.

Purpose: To visualize the KFs on 3-T MRI and to conduct a layer-by-layer dissection of the ALC. Read More

Am J Sports Med 2020 Jun 8;48(7):1673-1681. Epub 2020 May 8.

Department of Orthopaedic Surgery, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea.

Background: The incidence of meniscocapsular junction tears of the medial meniscus posterior horn, known as , is reported to be 9.3% to 23.9%. Read More

Ann Biomed Eng 2020 May 7. Epub 2020 May 7.

Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, Beijing, 100191, China.

Biomechanical risk factors associated with the alignment and position of the knee for anterior cruciate ligament (ACL) injury are still not conclusive. As bone bruises identified on magnetic resonance imaging (MRI) following acute ACL injury could represent the impact footprint at the time of injury. To improve understanding of the ACL injury mechanism, we aimed to determine the knee kinematics during ACL injury based on the bone bruises. Read More

Orthop J Sports Med 2020 Apr 10;8(4):2325967120914568. Epub 2020 Apr 10.

Sports and Joint Surgery, Gelenkpunkt, Innsbruck, Austria.

Background: Radial tears of the lateral meniscus frequently accompany acute anterior cruciate ligament (ACL) injuries and lead to increased joint stress and pathological meniscal extrusion (ME). The dynamic behavior of the lateral meniscus after radial tear repair with respect to ME has not been described.

Purpose: To quantitatively assess dynamic lateral ME after all-inside radial tear repair. Read More

Orthop J Sports Med 2020 Apr 15;8(4):2325967120911162. Epub 2020 Apr 15.

Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.

Background: Bone bruises observed on magnetic resonance imaging (MRI) after an anterior cruciate ligament (ACL) injury could provide significant information about ACL injury mechanisms.

Purpose/hypothesis: The purpose of this study was to investigate common bone bruise patterns after an ACL injury. It was hypothesized that the most common bone bruise distribution pattern would be only the lateral side of both the femur and tibia. Read More

J Surg Case Rep 2020 04 6;2020(4):rjaa054. Epub 2020 Apr 6.

Department of Orthopaedic Surgery, Martini Hospital, Groningen, The Netherlands.

An anterior cruciate ligament (ACL) rupture is a common injury. The ACL usually tears in its mid-substance, an avulsion fracture of the ACL mostly occurs at the tibial attachment. In few cases, an avulsion fracture occurs proximally from the ACL attachment to the lateral femoral condyle. Read More

J Orthop Res 2020 Apr 8. Epub 2020 Apr 8.

Icometrix, Leuven, Belgium.

Diffusion tensor imaging (DTI) provides information about tissue microstructure and its degree of organization by quantifying water diffusion. We aimed to monitor longitudinal changes in DTI parameters (fractional isotropy, FA; mean diffusivity, MD; axial diffusivity, AD; radial diffusivity, RD) of the anterior cruciate ligament (ACL) following primary repair with internal bracing (IBLA). Fourteen patients undergoing IBLA were enrolled prospectively and scheduled for clinical follow-up, including instrumented laxity testing, and DTI at 3, 6, 12, and 24 months postoperatively. Read More

Arthroscopy 2020 04;36(4):1092-1094

Richmond, Australia.

The anatomic and biomechanical role of the anterolateral complex (ALC) of the knee has gained increased interest in recent years. Specifically, a keen focus has been on magnetic resonance imaging (MRI) evaluation of the ALC in the setting of anterior cruciate ligament injury. Although many of these studies are well designed and conducted, they are based on a foundation of controversial gross anatomy and MRI protocols and scanners not typically used in standard practice. Read More

Mater Sci Eng C Mater Biol Appl 2020 Apr 12;109:110423. Epub 2019 Nov 12.

Department of Orthopaedics, UConn Health, Farmington, CT, 06030, USA. Electronic address:

Anterior cruciate ligament (ACL) plays a crucial role stabilizing the knee joint while connecting tibia to femur. Lack of proper treatment of injured ACL can lead to meniscus tear and osteoarthritis. Interference screws secure the graft tissue for superior integration of graft on host tissue during autograft fixation. Read More

J Orthop Traumatol 2020 Mar 28;21(1). Epub 2020 Mar 28.

Orthopaedic Clinic CTO, University of Florence, Largo Palagi 1, 50139, Florence, Italy.

Background: Partial lesions of the anterior cruciate ligament (ACL) are more common than is generally thought, accounting for about 10-12% of ACL injuries. Selective reconstruction may be considered as an option in isolated bundle rupture. The purpose of this study is to evaluate both subjective and objective clinical results, as well as functional recovery time, after selective arthroscopic single-bundle reconstruction in a consecutive series of patients affected by partial ACL rupture. Read More

Am J Sports Med 2020 04 16;48(5):1078-1087. Epub 2020 Mar 16.

Sports Medical Center, Konkuk University Medical Center, Seoul, Republic of Korea.

Background: Few studies have reported the healing process of anterolateral ligament (ALL) injuries.

Purpose/hypothesis: This study investigated the healing status of ALL injuries after primary anterior cruciate ligament (ACL) reconstruction (ACLR). Additionally, we investigated the association between the healing status of ALL injuries and associated lesions such as osseous lesions and meniscal tears occurring at the time of an ACL rupture. Read More

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2020 Mar;34(3):323-329

Department of Orthopaedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China.

Objective: To evaluate the effectiveness of femoral oval tunnel technique versus round tunnel technique in single-bundle anterior cruciate ligament (ACL) reconstruction.

Methods: Between March 2016 and February 2018, 125 patients who underwent anatomical single-bundle ACL reconstruction with hamstring tendon and met the inclusive criteria were included in the retrospective study. Of the included patients, 43 patients underwent ACL reconstruction using oval tunnel technique (group A) and 82 patients with round tunnel technique (group B). Read More

Medicine (Baltimore) 2020 Mar;99(10):e19411

Department of Orthopaedics, Air Force Hospital of Southern Theater Command of PLA.

The effects of the intercondylar notch morphology on predicting anterior crucaite ligament (ACL) injury in males were unknown. We aimed to determine the risk factors of the intercondylar notch on ACL injury, and evaluate the predictive effects of the morphological parameters on ACL injury in males. Sixty-one patients with ACL injury and seventy-eight patients with intact ACLs were assigned to the case group and control group respectively. Read More

J Knee Surg 2020 Mar 4. Epub 2020 Mar 4.

Department of Physical Medicine and Rehabilitation, Istanbul Medipol University, Istanbul, Turkey.

The aim of this study was to research the associations between anterior cruciate ligament (ACL) injuries and patella alta and trochlear dysplasia in adult patients using magnetic resonance imaging (MRI). This retrospective study included 221 adult patients: 110 with acute complete noncontact ACL tears and 111 without ACL injuries who underwent knee MRI procedures between May 2016 and July 2018. After the ACL injuries were verified using the sagittal proton density images, the patellar height and patellar tendon length were measured on the sagittal T1-weighted images, and the Insall-Salvati ratio (ISR) was calculated. Read More

Orthop J Sports Med 2020 Feb 20;8(2):2325967120902013. Epub 2020 Feb 20.

Department of Radiology, Sonomed Imaging Center, Istanbul, Turkey.

Background: Anterior cruciate ligament (ACL) reconstruction performed with growth factors and activated platelets has been suggested to accelerate tendon ligamentization, leading to earlier return to daily activities and sports.

Hypotheses: Platelet-rich fibrin (PRF) will result in improved graft maturation and healing as evaluated by magnetic resonance imaging (MRI) in patients undergoing hamstring ACL reconstruction. Hemostatic and analgesic properties of PRF will lead to less postoperative blood loss and pain. Read More

Int J Sports Phys Ther 2020 Feb;15(1):139-147

Twin Cities Orthopedics, Edina, MN, USA.

Background And Purpose: Multi-ligament knee injuries (MLKI) can be debilitating and often career ending injuries for athletes. Current literature reports on outcomes following these injuries for return to activities of daily life; however, there is a paucity of evidence evaluating the return to sport following a MLKI. The purpose of this case report is to describe the treatment and outcome following a MLKI and novel meniscus radial repair technique in which the athlete returned to compete in the 2018 Winter Olympic Games 14 months postoperatively. Read More

Arthroscopy 2020 06 13;36(6):1679-1686. Epub 2020 Feb 13.

Hospital Sírio-Libanês, Faculty of Medicine, Institute of Orthopedics and Traumatology, University of São Paulo, São Paulo, Brazil; Knee Surgery Division, Faculty of Medicine, Institute of Orthopedics and Traumatology, University of São Paulo, São Paulo, Brazil.

Purpose: To evaluate the magnetic resonance imaging (MRI) characteristics of Segond fractures, including the structures attached to the avulsed fragment, the integrity of anterolateral ligament (ALL) and iliotibial band (ITB), and fragment size and location.

Methods: This was a retrospective, cross-sectional study with MRI scans from 2016 to 2019 with the term "Segond" in the reports, signs of acute trauma, and a bony anterolateral tibial avulsion (Segond) fracture. Two experienced observers accessed images to evaluate fragment dimensions (anteroposterior, mediolateral, and craniocaudal) and distances from anatomic landmarks (Gerdy's tubercle, articular surface, and posterolateral tibial corner). Read More

Skeletal Radiol 2020 Jul 14;49(7):1099-1107. Epub 2020 Feb 14.

Institute of Orthopaedics and Musculoskeletal Science, University College London and the Royal National Orthopaedic Hospital, Stanmore, Middlesex, London, HA7 4LP, UK.

Objective: To identify abnormalities in asymptomatic sedentary individuals using 3.0 Tesla high-resolution MRI.

Materials And Methods: The cohort comprised of 230 knees of 115 uninjured sedentary adults (51 males, 64 females; median age: 44 years). Read More

Knee Surg Sports Traumatol Arthrosc 2020 Feb 14. Epub 2020 Feb 14.

Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa-shi, Ishikawa-ken, 920-8641, Japan.

Purpose: This study aimed to investigate the occurrence and characteristics of lateral meniscus anterior root injuries during anatomical single-bundle anterior cruciate ligament (ACL) reconstruction.

Methods: Between 2011 and 2018, 70 women who had ACL injuries without lateral meniscal tears underwent anatomical single-bundle ACL reconstruction. Using computed tomography, the anatomical relationship between the predicted lateral meniscus anterior root insertion and the tibial tunnel was retrospectively assessed, and the patients were divided into partial lateral meniscus anterior root injury and intact groups. Read More

Am J Sports Med 2020 03 14;48(4):838-846. Epub 2020 Feb 14.

Sports Medicine Service, Beijing Jishuitan Hospital, Beijing, China.

Background: The lateral meniscus posterior root (LMPR) lesion further decreases dynamic knee stability after anterior cruciate ligament (ACL) injury owing to the loss of the "wedge effect" maintained by the posterior horn of the lateral meniscus. However, the effect of LMPR lesions on the static tibiofemoral relationship in extension after ACL injuries is not determined.

Purpose: To (1) determine the effect of LMPR lesions on anterior tibial subluxation of the lateral compartment (ATSLC) in extension in patients with ACL injuries and to (2) identify the LMPR-related factors associated with excessive ATSLC in extension. Read More

Am J Sports Med 2020 03 6;48(3):573-580. Epub 2020 Feb 6.

Sports Medicine Service, Beijing Jishuitan Hospital, Beijing, China.

Background: Anterior tibial subluxation (ATS) in extension after anterior cruciate ligament (ACL) injury highlights an increased anterior position of the tibia relative to the femur. Recent studies demonstrated that subluxation is sometimes irreducible and the normal tibiofemoral relationship is not restored by ACL reconstruction (ACLR), which raises concerns regarding clinical outcomes after ACLR.

Hypothesis: Excessive preoperative ATS in extension is associated with inferior knee stability after anatomic ACLR. Read More

J Nepal Health Res Counc 2020 Jan 21;17(4):532-536. Epub 2020 Jan 21.

Department of Orthopedics and Traumatology, B and B Hospital, Gwarko, Lalitpur, Nepal.

Background: Anterior cruciate ligament is one of the commonly injured ligaments in knee. The shape and dimension of the femoral notch has been linked with the risk of anterior cruciate ligament injury. The aim of this study was to study the risk of Anterior cruciate ligament injury with notch morphology in the Nepalese population. Read More

Skeletal Radiol 2020 May 25;49(5):677-689. Epub 2020 Jan 25.

University of Miami Sports Medicine Institute, 5555 Ponce de Leon Blvd, Coral Gables, FL, 33146, USA.

Background: Meniscal ramp lesions have been defined as longitudinal vertical peripheral tears of the medial meniscus involving the posterior meniscocapsular ligament, meniscotibial ligament, and/or the red-red zone of the posterior horn. They are heavily associated with anterior cruciate ligament injuries, and because of their potentially important biomechanical role in knee stabilization, injuries to this region may require surgical repair. However, due to their location and lack of general knowledge regarding their different types and associated appearances on magnetic resonance imaging, ramp lesions are routinely underreported. Read More

Br J Sports Med 2020 May 20;54(9):520-527. Epub 2020 Jan 20.

Division of Orthopedic Surgery, Oslo University Hospital, Oslo, Norway.

Objective: To investigate the risk of new meniscal tears after treatment for anterior cruciate ligament (ACL) injury, in children and adults with and without ACL reconstruction.

Design: Prognosis systematic review (PROSPERO registration number CRD42016036788).

Methods: We searched Embase, Ovid Medline, Cochrane, CINAHL, SPORTDiscus, PEDro and Google Scholar from inception to 3rd May 2018. Read More

Knee 2020 Jan 8;27(1):173-182. Epub 2020 Jan 8.

Orthopaedic Trauma Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, NewYork-Presbyterian, Weill Medical College of Cornell University, 535 E. 70th Street, New York, NY 10021, United States. Electronic address:

Background: Treatment of multiple ligament-injured knees (MLIKs) remains complex and most often requires ligament reconstruction surgery. Reconstruction effectively restores knee stability but the procedure is invasive and can be complicated by stiffness or arthrofibrosis. There has been recent resurgence of interest in primary repair of knee ligaments. Read More

Arthroscopy 2020 04 9;36(4):1086-1091. Epub 2020 Jan 9.

Department of Orthopaedic Surgery, Atrium Health Musculoskeletal Institute, OrthoCarolina Research Institute, and OrthoCarolina Sports Medicine Center, Charlotte, North Carolina, U.S.A.. Electronic address:

Purpose: To investigate the ability to visualize the anterolateral ligament (ALL) on magnetic resonance imaging (MRI) and identify ALL injuries in an intact- anterior cruciate ligament (ACL) and torn-ACL cohort. We also aimed to assess inter-rater reliability between 2 radiologists when it comes to the aforementioned assessment.

Methods: MRIs that met inclusion and exclusion criteria were placed into a control (ACL-intact) or study (ACL-injured) cohort. Read More

Sports Med Arthrosc Rev 2020 Mar;28(1):2-7

Pan Am Clinic, Winnipeg, MB, Canada.

Isolated posterior cruciate ligament (PCL) injuries are uncommon and can be easily missed with physical examination. The purpose of this article is to give an overview of the clinical, diagnostic and arthroscopic evaluation of a PCL injured knee. There are some specific injury mechanisms that can cause a PCL including the dashboard direct anterior blow and hyperflexion mechanisms. Read More

Curr Rev Musculoskelet Med 2020 Feb;13(1):115-122

Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue, MU-320W, San Francisco, CA, 94143, USA.

Purpose Of Review: Anterior cruciate ligament (ACL) injury is one of the most common ligamentous injuries suffered by athletes participating in cutting sports. A common misperception is that ACL reconstruction can prevent osteoarthritis (OA). The goal of this paper is to review and discuss the contributing factors for the development of OA following ACL injury. Read More

Acta Med Okayama 2019 Dec;73(6):495-501

Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.

Medial meniscus posterior root tear causes rapid knee cartilage degradation by inducing posteromedial displacement of the medial meniscus. We evaluated medial meniscus posterior extrusion before and after pullout repair for medial meniscus posterior root tear using magnetic resonance images. Twenty-eight patients with symptomatic medial meniscus posterior root tear were included. Read More

J Med Ultrasound 2019 Jul-Sep;27(3):148-150. Epub 2019 Apr 10.

Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei, Taiwan.

Anterior cruciate ligament (ACL) injury is one of the common musculoskeletal injuries. The most serious condition shall be managed by surgery, while the partial tear prefers conservative treatment, rehabilitation, exercise training, or platelet-rich plasma (PRP) injection. We describe the case of a 25-year-old female started to have right knee pain for a long time and the ACL partial tear was diagnosed through the magnetic resonance imaging (MRI). Read More

Medicine (Baltimore) 2019 Dec;98(50):e18376

Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.

Rationale: Medial collateral ligament (MCL) injury is a common sports injury. The damage mainly occurs in ligament fibers, but MCL avulsion fracture is extremely rare and only a few reports have been published.

Patient Concerns: Herein, we present a healthy 21-year-old man with an avulsion fracture of the MCL of the right knee sustained during snowboarding. Read More

J Sport Rehabil 2019 Dec 11:1-7. Epub 2019 Dec 11.

Objective: To assess the diagnostic validity of an isokinetic testing to detect partial injuries on the anterior cruciate ligament (ACL).

Design: Prospective diagnostic study.

Settings: Orthopedic clinic, physiotherapy clinic, orthopedic hospital, and diagnostic/image clinic. Read More

Surg Technol Int 2020 May;36:309-316

Department of Radiology, Antwerp University, Hospital and University of Antwerp, Edegem, Belgium.

Purpose: This paper describes technical difficulties and outcomes for the first 15 patients treated with Dynamic Intraligamentary Stabilization (DIS) for anterior cruciate ligament (ACL) repair.

Methods: The first 15 patients treated with DIS were included. To optimize the inclusion process, a new pre-operative pathway was developed. Read More

J Back Musculoskelet Rehabil 2019 Nov 29. Epub 2019 Nov 29.

Department of Mechanical Engineering, Kyushu University, Nishi-ku, Fukuoka, Japan.

Background: The main responsibility of the anterior cruciate ligament (ACL) is to restore normal knee kinematics and kinetics. Although so far different research has been carried out to measure or quantify the stresses and strains in the ACL experimentally or numerically, there is still a paucity of knowledge in this regard under different flexion angles of the tibiofemoral knee joint.

Objective: Understanding the stresses and strains within the ACL under various loading and boundary conditions may have a key asset for the development of an optimal surgical treatment of ACL injury that can better restore normal knee function. Read More

Int J Surg Case Rep 2019 19;65:339-343. Epub 2019 Nov 19.

Hamad Medical Corporation, Hamad General Hospital, Al Rayan Road, Doha, P.O Box 3050, Qatar.

Introduction: Meniscal tears are common knee injuries that occur in different populations and particularly among athletes. Either isolated or accompanied with anterior cruciate ligament injury, meniscal tears can be a source of significant knee pain, locking and instability. Different patterns of meniscal tears are described radiologically and arthroscopically, however displacement of the torn part of the meniscus can cause characteristic appearance on MRI. Read More

Clin Orthop Relat Res 2019 Dec;477(12):2677-2684

K. Hollnagel, Department of Orthopaedic Surgery, University of Toledo, Toledo, OH, USA B. Johnson, T. K. Miller, Department of Orthopaedic Surgery, Virginia Tech Carilion School of Medicine, Roanoke, VA, USA K. Whitmer , Department of Radiology, Virginia Tech Carilion School of Medicine, Roanoke, VA, USA A. Hanna, Virginia Tech Carilion School of Medicine, Roanoke, VA, USA.

Background: Hamstring autografts with a diameter of less than 8 mm for ACL reconstruction have an increased risk of failure, but there is no consensus regarding the best method to predict autograft size in ACL reconstruction.

Questions/purposes: (1) What is the relationship between hamstring cross-section on preoperative MRI and intraoperative autograft size? (2) What is the minimum hamstring tendon cross-sectional area on MRI needed to produce an autograft of at least 8 mm at its thickest point?

Methods: This was a retrospective cohort study of 68 patients. We collectively reviewed patients who underwent ACL reconstruction by three separate fellowship-trained surgeons at the Carilion Clinic between April 2010 and July 2013. Read More

BMC Musculoskelet Disord 2019 Nov 18;20(1):547. Epub 2019 Nov 18.

Department of Radiology, Antwerp University Hospital, Wilrijkstraat 10, 2650, Edegem, Belgium.

Background: The current gold standard for the treatment of an anterior cruciate ligament (ACL) rupture is reconstruction with tendon graft. Recently, two surgical ACL repair techniques have been developed for treating an acute ACL rupture: Dynamic Intraligamentary Stabilization (DIS, Ligamys®) and Internal Brace Ligament Augmentation (IBLA, InternalBrace™). We will conduct a single-blind, multi-center, randomized controlled trial which compares DIS, IBLA and reconstruction for relative clinical efficacy and economic benefit. Read More

J Orthop Res 2020 03 18;38(3):645-652. Epub 2019 Nov 18.

Department of Mechanical Engineering, University of Delaware, Newark, Delaware.

Post-traumatic patellofemoral osteoarthritis (OA) is prevalent after anterior cruciate ligament reconstruction (ACLR) and early cartilage degradation may be especially common in the femoral trochlear cartilage. Determining the presence of and factors associated with early femoral trochlear cartilage degradation, a precursor to OA, is a critical preliminary step in identifying those at risk for patellofemoral OA development and designing interventions to combat the disease. Early cartilage degradation can be detected using quantitative magnetic resonance imaging measures, such as tissue T relaxation time. Read More

J Orthop Res 2020 04 19;38(4):759-767. Epub 2019 Nov 19.

Department of Biomechanics, Hospital for Special Surgery, New York, New York.

Combined injury to the anterior cruciate ligament (ACL) and meniscus is associated with earlier onset and increased rates of post-traumatic osteoarthritis compared with isolated ACL injury. However, little is known about the initial changes in joint structure associated with these different types of trauma. We hypothesized that trauma to the ACL and lateral meniscus has an immediate effect on morphometry of the articular cartilage and meniscus about the entire tibial plateau that is more pronounced than an ACL tear without meniscus injury. Read More

Am J Sports Med 2019 12 24;47(14):3365-3372. Epub 2019 Oct 24.

Department of Orthopaedics, Bürgerspital Solothurn, Solothurn, Switzerland.

Background: Although the femoral tunnel position is crucial to anatomic single-bundle anterior cruciate ligament (ACL) reconstruction, the recommendations for the ideal femoral footprint position are mostly based on cadaveric studies with small sample sizes, elderly patients with unknown ACL status, and 2-dimensional techniques. Furthermore, a potential difference in the femoral ACL footprint position and ACL orientation between ACL-ruptured and ACL-intact knees has not been reported in the literature.

Hypothesis: The femoral ACL footprint position and ACL orientation vary significantly between ACL-ruptured and matched control ACL-intact knees. Read More

Orthop Traumatol Surg Res 2019 11 12;105(7):1383-1387. Epub 2019 Oct 12.

Service de chirurgie orthopédique et traumatologique, centre hospitalier de Versailles, 78150 Le Chesnay, France. Electronic address:

Background: Meniscal replacement by an allograft or scaffold has been proven effective in patients with post-meniscectomy pain syndrome. Replacement of both menisci is a rarely performed procedure about which little is known. The primary objective of this work was to assess the functional outcomes of arthroscopic bimeniscal replacement. Read More

Am J Sports Med 2019 11 8;47(13):3166-3172. Epub 2019 Oct 8.

Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA.

Background: The in vivo mechanics of the anterior cruciate ligament (ACL) and its bundles during dynamic activities are not completely understood. An improved understanding of how the ACL stabilizes the knee is likely to aid in the identification and prevention of injurious maneuvers.

Purpose/hypothesis: The purpose was to measure in vivo ACL strain during a single-legged jump through use of magnetic resonance imaging (MRI) and high-speed biplanar radiography. Read More

Acta Radiol 2020 Jun 3;61(6):749-759. Epub 2019 Oct 3.

Department of Radiology in Linköping, Center for Diagnostics, Region Östergötland, Sweden.

Background: Dual-energy computer tomography (DECT) can detect post-traumatic bone marrow lesions. Prospective studies of the knee with large numbers of participants and intra-observer agreement assessment are limited.

Purpose: To investigate the diagnostic accuracy of DECT in detecting bone marrow lesions as well as estimating the bone marrow lesion volume in patients with suspected anterior cruciate ligament trauma with magnetic resonance imaging (MRI) as reference standard. Read More

J Orthop Case Rep 2019 ;9(3):90-92

Department of Clinical Research Development Center, Firoozgar Hospital, Iran University of Medical Science, Tehran, Iran.

Introduction: Reverse Segond fracture is a cortical avulsion fracture off the medial tibial plateau of the knee, associated with tears of the posterior cruciate ligament (PCL), medial collateral ligament (MCL), medial meniscus, and probably the anterior cruciate ligament (ACL). Unlike Segond fracture, it is a very rare injury of the knee.

Case Report: Case one is a 24-year-old male with left tibial plateau and reverse Segond fracture with an magnetic resonance imaging (MRI) showing MCL avulsion, medial meniscus entrapped in fracture site and ACL tear but intact PCL. Read More