Search Our Scientific Publications & Authors

Sports Med 2019 Jan 28. Epub 2019 Jan 28.

Division of Physical Therapy, Center for Human Movement Science, School of Medicine, The University of North Carolina at Chapel Hill, CB# 7135 Bondurant Hall, Chapel Hill, NC, 27599-7135, USA.

Background: Anterior cruciate ligament (ACL) injury is one of the most common injuries in sports, and the injury mechanisms are not completely clear. Bone bruises seen on magnetic resonance imaging (MRI) following ACL injuries may provide significant information for determining ACL injury mechanisms.

Objective: The aim was to determine ACL injury mechanisms through an evaluation of locations of bone bruises associated with ACL injury. Read More

Orthop J Sports Med 2019 Jan 10;7(1):2325967118820057. Epub 2019 Jan 10.

Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA.

Background: An altered tibial position is still present despite anterior cruciate ligament (ACL) reconstruction. It has been demonstrated that an abnormal tibial position after an ACL injury may play a role in subsequent injuries to the meniscus, which can lead to early cartilage degeneration.

Purpose: To determine changes in both the tibial position and the meniscal matrix present before and after ACL reconstruction as well as to evaluate the association between these 2 variables in ACL-injured knees 3 years after reconstruction. Read More

Am J Sports Med 2019 Jan 14:363546518819176. Epub 2019 Jan 14.

The Steadman Clinic, Vail, Colorado, USA.

Background:: Recent biomechanical studies have identified sagittal plane posterior tibial slope as a potential risk factor for posterior cruciate ligament (PCL) injury because of its effects on the kinematics of the native and surgically treated knee. However, the literature lacks clinical correlation between primary PCL injuries and decreased posterior tibial slope.

Purpose/hypothesis:: The purpose of this study was to retrospectively compare the amount of posterior tibial slope between patients with PCL injuries and age/sex-matched controls with intact PCLs. Read More

J Pediatr Orthop 2019 Jan 8. Epub 2019 Jan 8.

Elite Sports Medicine, Connecticut Children's Medical Center.

Background: Prior research has shown decreased accuracy of meniscal injury detection using magnetic resonance imaging (MRI) for anterior cruciate ligament (ACL)-deficient adult patients as well as ACL-deficient pediatric and adolescent patients. The objectives of this study were the following: (1) assess the diagnostic ability of MRI in detecting meniscal injuries for pediatric and adolescent patients undergoing arthroscopic ACL reconstruction and (2) characterize the unrecognized meniscal injuries.

Methods: The sensitivity, specificity, positive predictive value, and negative predictive value of meniscal tears (medial, lateral, or both) on MRI were calculated for the 107 patients in this cohort. Read More

Unfallchirurg 2018 Nov 20. Epub 2018 Nov 20.

Klinik und Poliklinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland.

Background: Tibial bony avulsion fractures of the posterior cruciate ligament (PCL) are rare injuries and in certain cases a delayed healing or non-union can occur under conservative treatment.

Objective: Presentation of the clinical result of patients with pseudarthrosis who were secondarily operated on after bony avulsion of the PCL.

Material And Methods: The study included all patients who were operated on since 2010 for reasons of delayed or non-union PCL avulsion fracture in this clinic. Read More

J Orthop Surg Res 2018 Oct 22;13(1):265. Epub 2018 Oct 22.

Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Xi Road, Wenzhou, 325000, People's Republic of China.

Background: The standard treatment of the posterior cruciate ligament (PCL) rupture accompanied with the posterior root of medial meniscus (PRMM) tears is controversial. Our research describes a minimally invasive technique for the PCL rupture accompanied with the PRMM tears.

Methods: We described a "U" shape suture and shared tunneling technique to treat the PCL rupture accompanied with PRMM tears. Read More

Knee Surg Sports Traumatol Arthrosc 2018 Oct 4. Epub 2018 Oct 4.

Department of Orthopaedic Surgery, Henry Ford Health System, Henry Ford Hospital, 2799 W. Grand Blvd, Detroit, MI, 48202, USA.

Purpose: The purpose of this study was to identify if abnormal tibial alignment was a risk factor for lateral meniscus posterior root tears (LMPRT) in patients with acute anterior cruciate ligament (ACL) ruptures.

Methods: The medical charts of 200 patients treated for ACL ruptures between 2013 and 2016 were retrospectively reviewed and evaluated. MRI images and reports were assessed for concurrent meniscal tears. Read More

Acta Chir Orthop Traumatol Cech 2018 ;85(1):22-28

Ortopedická klinika 1. lékařské fakulty Univerzity Karlovy a Nemocnice Na Bulovce, Praha.

PURPOSE OF THE STUDY The aim of this paper was to compare terminal extension in normal and anterior cruciate ligament (ACL) deficient knees, and therefore to determine the role of the ACL during this motion. MATERIAL AND METHODS Ten knees with ACL tears (7 knees with recent ACL tears, 3 knees with long-standing tears) and 10 normal contralateral knees have been examined using MRI in passive hyperextension, 20° flexion and 20° flexion with a 9 kg posteriorly directed load on the femur. Movements of the femoral condyles on the tibia were calculated using previously described methods. Read More

AJR Am J Roentgenol 2018 Dec 21;211(6):1313-1318. Epub 2018 Sep 21.

1 Department of Radiology, Seoul National University Bundang Hospital, 82 Gumi-ro, 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do 13620, South Korea.

Objective: The objective of our study was to evaluate the association between anterior tibial translation and injuries on the posterior horn medial meniscus (PHMM) and the integrity of the brake stop mechanism of the PHMM in the anterior cruciate ligament (ACL)-deficient knee.

Materials And Methods: This retrospective study included 85 consecutive patients with an arthroscopically confirmed complete ACL tear. Anterior tibial translation was quantitatively measured using sagittal MRI at the midpoint of the lateral femoral condyle. Read More

Semin Musculoskelet Radiol 2018 Sep 22;22(4):413-423. Epub 2018 Aug 22.

University of Toronto, Toronto, Ontario, Canada.

Posterolateral corner (PLC) injuries of the knee are often sustained in combination with anterior or posterior cruciate ligament injuries. A variety of surgical techniques including acute repair, nonanatomical reconstructions, and anatomical reconstructions have been used to treat grade III PLC injuries. Scant literature is available on postoperative imaging of the PLC. Read More

Am J Sports Med 2018 Oct 20;46(12):2894-2898. Epub 2018 Aug 20.

Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA.

Background: Database research is being used in orthopaedic literature with increased regularity. The main limitation of database research is the absence of diagnosis and treatment verification afforded by medical chart review. This absence may limit the accuracy of some conclusions and recommendations produced by database research. Read More

J Sci Med Sport 2019 Feb 10;22(2):169-174. Epub 2018 Jul 10.

The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, USA; Departments of Pediatrics and Orthopaedic Surgery, University of Cincinnati, USA; The Micheli Center for Sports Injury Prevention, USA; Department of Orthopaedics, University of Pennsylvania, USA.

Objectives: We aimed to present a unique prospective neurological dataset for participants who experienced an ACL injury.

Design: Prospective longitudinal case-control.

Methods: High school female soccer athletes were evaluated using functional magnetic resonance imaging to capture resting-state brain connectivity prior to their competitive season. Read More

Curr Rev Musculoskelet Med 2018 Sep;11(3):515-520

Department of Orthopedics. Division of Sports Medicine, NYU Langone Health, 333 East 38th Street, New York, NY, 10016, USA.

Purpose Of Review: Accurate isolated PCL diagnosis continues to present a challenge. This article reviews the current literature regarding clinical and radiographic evaluation of PCL injuries.

Recent Findings: A thorough history to understand the mechanism of injury should begin any evaluation. Read More

Acta Ortop Bras 2018 Jan-Feb;26(1):16-18

. Department of Orthopedics and Traumatology, Faculdade de Medicina do ABC, Santo André, SP, Brazil.

Objective: To analyze the level of agreement in diagnosing knee injury among orthopedists with clinical experience in knee treatment.

Method: An online questionnaire was used to analyze the ability of orthopedic knee surgeons to diagnose intra-articular knee injuries using MRI, the importance given to this test in their clinical practice, and the agreement between these diagnoses and the radiology report.

Results: The study participants considered MRI an important tool for clarifying inconclusive diagnoses and surgical planning. Read More

Skeletal Radiol 2018 Nov 1;47(11):1523-1532. Epub 2018 Jun 1.

Department of Radiology, Division of Musculoskeletal Imaging and Intervention, Massachusetts General Hospital, Boston, MA, USA.

Objective: To correlate MRI findings of patients with posterior cruciate ligament (PCL) injury and surgical management.

Materials And Methods: A retrospective search yielded 79 acute PCL injuries (36 ± 16 years old, 21 F, 58 M). Two independent readers graded PCL tear location (proximal, middle, or distal third) and severity (low-grade or high-grade partial/complete) and evaluated injury of other knee structures. Read More

Knee 2018 Aug 24;25(4):577-587. Epub 2018 May 24.

IRCCS Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna, Italy; IRCSS Istituto Ortopedico Rizzoli, Clinica Ortopedica e Traumatologica II, Bologna, Italy; Università di Bologna, Dipartimento Scienze Biomediche e Neuromotorie - DIBINEM, Bologna, Italy.

Background: Until now, there has been a lack of in vivo analysis of the correlation between bony morphological features and laxity values after an anterior cruciate ligament (ACL) injury.

Methods: Forty-two patients who underwent ACL-reconstruction were enrolled. Static laxity was evaluated as: antero-posterior displacement and internal-external rotation at 30° and 90° of flexion (AP30, AP90, IE30, IE90) and varus-valgus rotation at 0° and 30° of flexion (VV0, VV30). Read More

Int J Appl Basic Med Res 2018 Apr-Jun;8(2):96-99

Department of Anatomy, Dayanand Medical College and Hospital, Ludhiana, Punjab, India.

Introduction: Menisci and cruciate ligaments are intra-articular structures of knee, and injury to these structures is common. Morphometric data gained in the study will help in analyzing the variations among humans and correlating it with the possibility, location, and type of injuries as well as better interpretation of structures during magnetic resonance imaging and arthroscopy which will further help in reconstructive surgeries of knee.

Materials And Methods: Width and thickness of the medial menisci (MM), lateral menisci (LM), and maximum length and width of anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) were taken on twenty knees. Read More

Osteoarthritis Cartilage 2018 Jul 17;26(7):929-939. Epub 2018 Apr 17.

McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada. Electronic address:

Objective: Anterior cruciate ligament (ACL) tears increase early onset osteoarthritis (OA) risk leading to cartilage and bone degradation. While the contribution of bone in OA development is unclear, evidence suggests that bone changes accompany cartilage degradation. This study aims to assess if regions with differences in subchondral bone plate thickness have differences in cartilage thickness when comparing ACL reconstructed (ACLR) knees of women ≥5 years post-injury to contralateral and controls with uninjured knees. Read More

J Back Musculoskelet Rehabil 2018 ;31(4):629-636

Department of Orthopaedics, Guangdong Second People's Hospital, Guangzhou, Guangdong, China.

Objective: To explore the biomechanical influence of posterior tibial angle on the anterior cruciate ligament and knee joint forward stability.

Methods: The left knee joint of a healthy volunteer was scanned by CT and MRI. The data were imported into Mimics software to obtain 3D models of bone, cartilage, meniscus and ligament structures, and then Geomagic software was used to modify of the image. Read More

Zhongguo Gu Shang 2018 Mar;31(3):263-266

Department of Joint Surgery, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, Zhejiang, China;

Objective: To explore diagnostic value of MRI on posterior root tear of medial and lateral meniscus.

Methods: From January 2012 to January 2016, clinical data of 43 patients with meniscal posterior root tear confirmed by arthroscopy were retrospective analyzed, including 25 males and 18 females, aged from 27 to 69 years old with an average age of(42.5±8. Read More

Am J Sports Med 2018 Jun 26;46(7):1617-1623. Epub 2018 Mar 26.

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

Background: Static anterior tibial subluxation of the lateral compartment after an anterior cruciate ligament (ACL) injury highlights an increased anterior position of the tibia relative to the femur. However, the precise cause of this phenomenon is not entirely clear. Recently, an increased posterior tibial slope (PTS) has been identified as an independent risk factor for noncontact ACL injuries. Read More

Knee 2018 Jun 14;25(3):507-512. Epub 2018 Mar 14.

Sydney Orthopaedic Trauma & Reconstructive Surgery, Suite 5/Level 2, 19 Kensington Street, Kogarah, Sydney, NSW 2217, Australia.

Background: Posterior cruciate ligament (PCL) injuries of the knee are common and sometimes difficult to diagnose. Magnetic resonance imaging (MRI), performed using standard orthogonal plane views, is the investigation of choice. It can be particularly difficult to differentiate acute partial and complete tears and identify elongation of chronic healed tears. Read More

Zhongguo Gu Shang 2018 Feb;31(2):155-159

Department of Orthopaedics, Ningbo Fourth Hospital, Xiangshan 315700, Zhejiang, China.

Objective: To investigate the characteristics and clinical treatment of avulsion fracture of the lateral edge of tibial plateau(segond fracture) in knee joint injuries.

Methods: From January 2011 and December 2015, 29 patients with Segond fracture were treated with minimally invasive arthroscopy technology in intra-articular injuries combined with double anchor nail fixation in avulsion fracture of the lateral edge of tibial plateau, including 17 males and 12 females with an average age of 41 years old ranging from 27 to 62 years old. Among them, there were 20 cases of anterior cruciate ligament rupture (ACL rupture) involving the anterior cruciate ligament tibial eminence avulsion fracture included, 3 cases of posterior cruciate ligament rupture (PCL rupture), 1 case of ACL rupture combined with PCL rupture, 3 cases of medial collateral ligament tear, and 2 cases combined fractures of tibial plateau (1 case of the medial platform fractures and 1 cases of lateral fracture). Read More

Medicine (Baltimore) 2018 Mar;97(10):e0001

Department of Sports Medicine and Arthroscopic Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China.

To compare the direct and indirect signs on magnetic resonance imaging (MRI) for patients with acute and chronic anterior cruciate ligament (ACL) tears.Two independent reviewers retrospectively evaluated the MRI images of 377 patients with ACL tear confirmed by arthroscopy. There were 160 cases with acute ACL tear and 217 cases with chronic ACL tear. Read More

Arch Orthop Trauma Surg 2018 Jun 5;138(6):827-834. Epub 2018 Mar 5.

Department of Orthopedics Surgery, Second Affiliated Hospital, College of Medicine, Zhejiang University, 88th Jiefang Road, Hangzhou, 310000, China.

Purpose: To compare the clinical outcomes of double-bundle (DB) single-tibial tunnel technique and double-tunnel technique for ACL reconstruction in patients with knee hyperextension.

Methods: Defined as having constitutional hyperextension of greater than 10°, 56 patients with knee hyperextension who underwent ACL reconstruction were included in this study. To exclude concomitant lesions, preoperative magnetic resonance imaging (MRI) was performed in all knees. Read More

Arthrosc Tech 2017 Oct 25;6(5):e1685-e1690. Epub 2017 Sep 25.

Orthopaedic Trauma Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY, U.S.A.

Isolated posterior cruciate ligament (PCL) injuries are relatively rare and PCL injuries most commonly occur in the setting of multiligamentous knee injuries. PCL injuries can be treated with primary repair, which has the advantages of preserving the native tissue, maintaining proprioception, and minimal invasive surgery when compared with reconstruction surgery. Historically, primary repair of PCL injuries was performed in all tear types using an open approach, and, although the subjective outcomes were relatively good, patients often had residual laxity. Read More

Eur J Radiol 2018 Feb 1;99:146-153. Epub 2018 Jan 1.

Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Postboks 7804, N-5020, Bergen, Norway. Electronic address:

Background: to examine if PROTruding of the Anterior Medial Meniscus (PROTAMM) could be an indirect sign of PCL deficiency by comparing PROTAMM to passive posterior tibial sagging (PSS) for chronic PCL rupture on routine MRI.

Methods: Patients with PCL reconstruction between 2011 and 2016 were included in a case control study. Primarily cases with combined ACL/PCL injury were excluded. Read More

Knee 2018 Jan 9;25(1):118-129. Epub 2018 Jan 9.

Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, 27599, NC, United States.

Background: Lower proteoglycan density (PGD) of the articular cartilage may be an early marker of osteoarthritis following anterior cruciate ligament (ACL) reconstruction (ACL-R). The purpose this study was to determine associations between the Knee Injury and Osteoarthritis Outcomes Score (KOOS) and PGD of the articular cartilage in the femur and tibia 12-months following ACL-R.

Methods: We evaluated KOOS pain, symptoms, function in activities of daily living (ADL), function in sport and recreation (Sport), and quality of life (QOL), as well as PGD using T1rho magnetic resonance imaging in 18 individuals 12. Read More

J Knee Surg 2018 Feb 10;31(2):130-140. Epub 2018 Jan 10.

Department of Radiology, University of Michigan, Ann Arbor, Michigan.

Ligamentous structures of the knee are numerous and complex, including the anterior and posterior cruciate ligaments, medial and lateral collateral ligaments, ligaments of the posteromedial and posterolateral corners, and the anterolateral ligament. Clinical assessment after a knee injury is paramount and can direct both the clinician's choice of imaging study and the radiologist's interpretation. Imaging is crucial in that it provides additional information for diagnosis, management, and surgical planning. Read More

J Emerg Med 2018 03;54(3):335-338

Department of Radiology, Aerospace Medical Center, Republic of Korea Air Force, Cheongwon-gun, Chungcheongbuk-do, Republic of Korea.

Background: Patients with acute anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) injuries from sport-related activities are frequently seen in the emergency department (ED). However, knee instability tests are known to show variable sensitivity and specificity. These tests would also have limited functionality in patients with severe pain and swelling in the knee. Read More

Clin Imaging 2018 Jul - Aug;50:20-30. Epub 2017 Dec 13.

Eskişehir State Hospital, Department of Radiology, Eskişehir, Turkey.

Objective: The aim of this study was to determine the most important anatomical risk factors for injury of the anterior cruciate ligament (ACL) of the knee.

Materials And Methods: After study approval by our institutional ethics committee, 3 radiologists reinterpreted the preoperative magnetic resonance (MR) images of 86 patients who had undergone surgery for ACL rupture. The measurements were compared with those for a control group comprising 109 patients with intact ACL who had undergone MR examinations for other reasons, such as meniscal injuries or Baker cyst ruptures. Read More

Arthroscopy 2018 03 8;34(3):681-686. Epub 2017 Dec 8.

Steadman Philippon Research Institute, Vail, Colorado, U.S.A.; The Steadman Clinic, Vail, Colorado, U.S.A.. Electronic address:

Purpose: To determine the epidemiology by player position, examination, imaging findings, and associated injuries of posterior cruciate ligament (PCL) injuries in players participating in the National Football League (NFL) Combine.

Methods: All PCL injuries identified at the NFL Combine (2009-2015) were reviewed. Data were obtained from the database organized by the NFL medical personnel for the compilation of the medical and physical performance examination results of NFL Draftees participating in the NFL Combine from 2009 to 2015. Read More

Arch Orthop Trauma Surg 2018 Mar 6;138(3):377-385. Epub 2017 Dec 6.

Center for Musculoskeletal Surgery, Charité-University Medicine Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.

Introduction: Posterior cruciate ligament reconstruction (PCLR) is advocated to prevent an early onset of osteoarthritis. We hypothesized that posterior instability after PCLR correlates with degenerative changes.

Materials And Methods: MRIs of 42 (12 female/30 male; 39 ± 9 years) patients were enrolled with a minimum 5-year follow-up (FFU) after PCLR. Read More

Arthroscopy 2018 Feb 6;34(2):557-565. Epub 2017 Dec 6.

Imaging Department, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.

Purpose: To determine if posterior cruciate ligament (PCL) and intercondylar notch (IN) morphometries and volumetrics act as risk factors for anterior cruciate ligament (ACL) tears.

Methods: A prospective case-controlled magnetic resonance imaging (MRI) study was conducted with subjects presenting noncontact knee injuries. Exclusion criteria were previous surgery, PCL tear, osteoarthritis, tumors, or infectious and inflammatory conditions. Read More

Knee 2018 Jan 20;25(1):109-117. Epub 2017 Nov 20.

Department of Orthopedics and Traumatology, Erciyes University Medical Faculty, Kayseri, Turkey.

Background: There are few large-scale, long-term studies comparing medial meniscal repairs with or without concurrent anterior cruciate ligament (ACL) reconstruction.

Methods: A total of 140 patients who underwent arthroscopic medial meniscal repair were divided into two groups: Group A, meniscus repair only and Group B, meniscus repair with concurrent ACL reconstruction. Clinical assessments in- cluded physical examination findings, Lysholm score, and the International Knee Documentation Committee (IKDC) form. Read More

Injury 2018 Feb 16;49(2):382-385. Epub 2017 Nov 16.

Department of Orthopedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 Xueyuan Western Road, Wenzhou, Zhejiang Province, PR China. Electronic address:

There is no guideline and consensus about when and how to treat accompanying multi-ligaments injuries, especially anterior and/or posterior cruciate ligaments, in tibial plateau fractures. We report one case of fracture and dislocation of tibial plateau, treated by open reduction and internal plates fixation, augmented by trans-articular Kirschner wire fixation to overcome instability and malrotation of the knee joints discovered intraoperatively. The Kirschner wire was removed about four weeks after the index operation, and the patient begun functional exercise from then on. Read More

Injury 2017 Oct;48 Suppl 4:S2-S5

Department of Orthopedics and Traumatology, University of Sao Paulo, Brazil.

Introduction: According to Fraser's description, ipsilateral femoral and tibial diaphyseal fractures are characterised as type I floating knee and have a better prognosis than fractures with joint involvement (type II). There are few reports of functional and muscle strength in these patients. The objective of this study was to evaluate the functional and isokinetic muscle strength of patients with type I floating knee undergoing femoral and tibial internal fixation. Read More

BMJ 2017 11 9;359:j4693. Epub 2017 Nov 9.

Addenbrookes Hospital, Cambridge, UK.

Joints 2017 Mar 5;5(1):39-43. Epub 2017 Jun 5.

ASST Centro Specialistico Ortopedico Traumatologico Gaetano Pini - CTO, Milan, Italy.

 The aim of this review was to analyze the current literature on osteoarthritic evolution of knees without any combined meniscal or ligament lesions undergoing anterior cruciate ligament (ACL) reconstruction.  A PubMed/MEDLINE research was performed using the following keywords: "Anterior Cruciate Ligament Reconstruction" [Mesh] AND "Osteoarthritis, Knee" [Mesh]. Only English language literature and articles published after 2005 were included. Read More

Am J Orthop (Belle Mead NJ) 2017 Sep/Oct;46(5):E301-E307

Steadman Philippon Research Institute, Steadman Clinic, Vail, CO.

We describe the diagnosis, treatment, rehabilitation, and complications of a 27-year-old male paraskiier who sustained a closed high-velocity knee dislocation after colliding with a tree at a speed of 45 mph and falling 40 feet to the ground. Extensive surgery to repair and reconstruct the knee included open lateral capsular repair, open anatomical posterolateral corner reconstruction with split Achilles tendon allograft, open iliotibial band reconstruction with Achilles tendon allograft, arthroscopic anterior cruciate ligament reconstruction with bone-patellar tendon-bone autograft, and double-bundle posterior cruciate ligament reconstruction with Achilles tendon allograft for the anterolateral bundle and tibialis anterior tendon allograft for the posteromedial bundle. Follow-up surgery was performed to treat arthrofibrosis. Read More

Am J Orthop (Belle Mead NJ) 2017 Sep/Oct;46(5):E276-E279

Department of Orthopaedics, Ohio State University Wexner Medical Center, Columbus, OH. david.flanigan@ osumc.edu.

An aberrant meniscus attachment was found in the setting of an anterior cruciate ligament injury. An anomalous cordlike attachment ran from the anterior horn of the medial meniscus to the posterior horn of the lateral meniscus through the intercondylar notch. Surgeons should be aware of the anatomical variability in the knee in order to provide the best care for their patients. Read More

Sports Med Arthrosc Rev 2017 Dec;25(4):210-218

Hospital for Special Surgery, New York, NY.

Magnetic resonance imaging and a thorough understanding of its interpretation in the diagnosis and management of injuries to the ligaments about the knee is an essential skill for orthopedists. The goal of this review is to provide a description of the native and injured anatomy through magnetic resonance imaging and its correlations, when appropriate, as seen through the arthroscope at the time of surgery. The ligaments of focus include the anterior cruciate ligament, the posterior cruciate ligament, the medial collateral ligament, the posterolateral corner, the anterolateral ligament, and the medial patellofemoral ligament. Read More

J Orthop Trauma 2018 Mar;32(3):141-147

Orthopaedic Trauma Service, Hospital for Special Surgery and Weill Cornell Medical College, New York Presbyterian Hospital, New York, NY.

Objective: To determine if ligamentous and meniscal injuries as determined by initial magnetic resonance imaging altered clinical outcomes after the fixation of tibial plateau fractures.

Design: Comparative cohort study.

Setting: Academic level I trauma center. Read More

J Am Acad Orthop Surg 2017 Nov;25(11):752-761

From the Hospital for Joint Diseases, New York, NY.

The posteromedial corner of the knee encompasses five medial structures posterior to the medial collateral ligament. With modern MRI systems, these structures are readily identified and can be appreciated in the context of multiligamentous knee injuries. It is recognized that anteromedial rotatory instability results from an injury that involves both the medial collateral ligament and the posterior oblique ligament. Read More

Am J Sports Med 2018 02 13;46(2):341-347. Epub 2017 Oct 13.

The Steadman Clinic, Vail, Colorado, USA.

Background: Magnetic resonance imaging (MRI) of the knee is a highly sensitive and specific method for diagnosing acute posterior cruciate ligament (PCL) tears, with a reported accuracy of 96% to 100%. In chronic and revision settings, these injuries may be missed on MRI because of the apparent continuity of nonfunctional PCL fibers. Posterior tibial translation (PTT) of the medial compartment has been identified as a potential secondary finding of PCL tear on routine MRI. Read More

J Knee Surg 2018 Sep 6;31(8):716-722. Epub 2017 Oct 6.

Department of Orthopedics Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China.

Techniques using the anteromedial portal (AMP) and accessory anteromedial portal (AAMP) are commonly used in anterior cruciate ligament (ACL) reconstruction. The aim of this study was to investigate the radiological and clinical outcomes of arthroscopic single-bundle ACL reconstruction using the AMP or AAMP technique to drill the femoral tunnel. The records of 157 patients who underwent single-bundle ACL reconstruction using the AMP or AAMP technique between 2011 and 2015 were reviewed. Read More

Knee 2017 Dec 30;24(6):1335-1341. Epub 2017 Sep 30.

Wake Forest University, Winston-Salem, NC, United States.

Background: Greater posterior-inferior directed slope of the lateral tibial plateau (LTS) has been demonstrated to be a prospective ACL injury risk factor. Trainable measures to overcome a greater LTS need to be identified for optimizing injury prevention protocols. It was hypothesized that Healthy individuals with greater LTS who have not sustained an ACL injury would have a larger lateral hamstring volume. Read More

Knee Surg Sports Traumatol Arthrosc 2018 Feb 30;26(2):434-441. Epub 2017 Sep 30.

Department of Orthopedic Surgery, Okayama University Graduate School, 2-5-1 Shikata-cho, Kitaku, Okayama, 700-8558, Japan.

Purpose: Anterior cruciate ligament (ACL) reconstruction can reduce the risk of developing osteoarthritic knees. The goals of ACL reconstruction are to restore knee stability and reduce post-traumatic meniscal tears and cartilage degradation. A chronic ACL insufficiency frequently results in medial meniscus (MM) injury at the posterior segment. Read More

Rofo 2018 Mar 26;190(3):265-272. Epub 2017 Sep 26.

Radiological Institute, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany.

Purpose:  Parallel imaging allows for a considerable shortening of examination times. Limited data is available about the diagnostic accuracy of an accelerated knee MRI protocol based on parallel imaging evaluating all knee joint compartments in a large patient population compared to arthroscopy.

Materials And Methods:  162 consecutive patients with a knee MRI (1. Read More

Am J Sports Med 2017 Dec 26;45(14):3210-3215. Epub 2017 Sep 26.

Rady Children's Hospital, San Diego, California, USA.

Background: Segond fractures may be identified when an anterior cruciate ligament (ACL) tear is diagnosed and likely represent an avulsion of the anterolateral ligament. It is currently unclear whether these fractures can be ignored at the time of ACL reconstruction or if they should be addressed surgically.

Purpose: To compare the incidence of Segond fractures in patients undergoing primary ACL reconstruction compared with those undergoing revision ACL reconstruction in an attempt to determine if the presence of a Segond fracture predisposes to ACL reconstruction failure. Read More