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Lateral Ligament

John J Elias, Kerwyn C Jones, S Cyrus Rezvanifar, Joseph N Gabra, Melanie A Morscher, Andrew J Cosgarea
BACKGROUND: Continued patellar instability can occur following medial patellofemoral ligament (MPFL) reconstruction. Computational simulation of function was used to investigate the influence of the lateral position of the tibial tuberosity, trochlear dysplasia and patella alta on lateral patellar tracking following MPFL reconstruction. METHODS: Multibody dynamic simulation models were developed to represent nine knees being treated for recurrent patellar instability...
March 12, 2018: Knee
Kurt P Spindler, Laura J Huston, Kevin M Chagin, Michael W Kattan, Emily K Reinke, Annunziato Amendola, Jack T Andrish, Robert H Brophy, Charles L Cox, Warren R Dunn, David C Flanigan, Morgan H Jones, Christopher C Kaeding, Robert A Magnussen, Robert G Marx, Matthew J Matava, Eric C McCarty, Richard D Parker, Angela D Pedroza, Armando F Vidal, Michelle L Wolcott, Brian R Wolf, Rick W Wright
BACKGROUND: The long-term prognosis and risk factors for quality of life and disability after anterior cruciate ligament (ACL) reconstruction remain unknown. Hypothesis/Purpose: Our objective was to identify patient-reported outcomes and patient-specific risk factors from a large prospective cohort at a minimum 10-year follow-up after ACL reconstruction. We hypothesized that meniscus and articular cartilage injuries, revision ACL reconstruction, subsequent knee surgery, and certain demographic characteristics would be significant risk factors for inferior outcomes at 10 years...
March 2018: American Journal of Sports Medicine
Nauman Ahmed, Hammad Naeem Rana
Primary Small bowel adenocarcinoma, a rare entity and having varied clinical presentation, makes its clinical detection a diagnostic challenge. Moreover, its true prevalence in sub-continent population has not yet been established, which makes it more difficult for its detection. We present the case of a 60 year old male who came with abdominal pain and weight loss for two years as the only symptoms. A series of tests in the two year period remained inconclusive. Later Computed tomography showed a suspicious mass at the terminal ileum...
March 2018: JPMA. the Journal of the Pakistan Medical Association
Aoife Healy, Sybil Farmer, Anand Pandyan, Nachiappan Chockalingam
BACKGROUND: Assistive products are items which allow older people and people with disabilities to be able to live a healthy, productive and dignified life. It has been estimated that approximately 1.5% of the world's population need a prosthesis or orthosis. OBJECTIVE: The objective of this study was to systematically identify and review the evidence from randomized controlled trials assessing effectiveness and cost-effectiveness of prosthetic and orthotic interventions...
2018: PloS One
Sumit Agrawal, Nadine Schart-Morén, Wei Liu, Hanif M Ladak, Helge Rask-Andersen, Hao Li
OBJECTIVE: We used synchrotron radiation phase contrast imaging (SR-PCI) to study the 3D microanatomy of the basilar membrane (BM) and its attachment to the spiral ligament (SL) (with a conceivable secondary spiral lamina [SSL] or secondary spiral plate) at the round window membrane (RWM) in the human cochlea. The conception of this complex anatomy may be essential for accomplishing structural preservation at cochlear implant surgery. MATERIAL AND METHODS: Sixteen freshly fixed human temporal bones were used to reproduce the BM, SL, primary and secondary osseous spiral laminae (OSL), and RWM using volume-rendering software...
March 14, 2018: Upsala Journal of Medical Sciences
Jia-Ping Pan, Xu-Can Wang, Ming-Hong Huang
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...
February 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Okihiro Onishi, Kazuya Ikoma, Masamitsu Kido, Yukichi Kabuto, Keiichiro Ueshima, Ken-Ichi Matsuda, Masaki Tanaka, Toshikazu Kubo
BACKGROUND: Articular cartilage degeneration has been evaluated by magnetic resonance imaging (MRI). However, this method has several problems, including its time-consuming nature and the requirement of a high magnetic field or specialized hardware. The purpose of this study was to sequentially assess early degenerative changes in rabbit knee articular cartilage using MRI with a new double-contrast agent. METHODS: We induced osteoarthritis (OA) in the right knee of rabbits by anterior cruciate ligament transection and partial medial meniscectomy...
March 13, 2018: BMC Musculoskeletal Disorders
Costansia Bureta, Hiroyuki Tominaga, Takuya Yamamoto, Takao Setoguchi, Hideki Kawamura, Satoshi Nagano, Ichiro Kawamura, Masahiko Abematsu, Hironori Kakoi, Yasuhiro Ishidou, Setsuro Komiya
BACKGROUND: Here we report a rare case of lumbar spine epidural abscess and facet joint septic arthritis caused by Streptococcus agalactiae, which had spread to the iliopsoas muscles, leading to urine retention. CASE PRESENTATION: A 68-year-old woman with low back pain experienced a sudden onset of bilateral lower limb weakness, it was followed 14 days later by urine retention. At consultation, magnetic resonance imaging and identification of serum β-hemolytic streptococci provided a diagnosis of Streptococcus agalactiae infection...
March 13, 2018: BMC Surgery
Harry H Ching, Jacob B Kahane, Megan J Foggia, Annabel E Barber, Robert C Wang
BACKGROUND: Resection of massive goiters with suprahyoid, retropharyngeal, and substernal extension may not be amenable to standard approaches. This study evaluates a surgical approach allowing resection of massive goiters with minimal substernal and deep neck dissection. METHODS: Cases of thyroidectomy for goiters with substernal, retropharyngeal, or suprahyoid extension at a single institution from 2006 to 2017 were reviewed. The technique involves initial complete division of the medial thyroid tracheal attachments after identification of the RLN medial-inferiorly or superiorly...
March 12, 2018: World Journal of Surgery
Selena Tinga, Stanley E Kim, Scott A Banks, Stephen C Jones, Brian H Park, Antonio Pozzi, Daniel D Lewis
BACKGROUND: Cranial cruciate ligament (CrCL) insufficiency is a degenerative condition that is a common cause of pelvic limb lameness and osteoarthritis in dogs. Surgical therapies developed to treat dogs with naturally occurring CrCL insufficiency aim to address the resultant instability, but the in-vivo alterations in stifle kinematics associated with CrCL insufficiency have not been accurately defined. The objective of this study was to quantify the 3-dimensional femorotibial joint kinematics of dogs with naturally occurring cranial cruciate ligament (CrCL) insufficiency during ambulation...
March 12, 2018: BMC Veterinary Research
Vittorio Mattugini, Carmine Citarelli, Fabio Cosseddu, Marco Ghilard, Guido Luppichini, Francesco Casella, Giulio Agostini, Federico Sacchetti, Rodolfo Capanna
Fibular head avulsion fractures are rare injuries determined by traction of the fibular attachment of the lateral collateral ligament (LCL). Surgical treatment is often recommended with different techniques such as tension band fixation or lag screws stabilization. In this article, we describe a fixation technique of fibular head fractures obtained through the use of anchors. A 45-year-old athletic patient came to our attention in our traumatologic service after a motorcycle accident. He reported a complex injury of the posterolateral corner with an avulsion fracture of the left fibular head...
March 12, 2018: Surgical Technology International
Mohammad Kia, Timothy M Wright, Michael B Cross, David J Mayman, Andrew D Pearle, Peter K Sculco, Geoffrey H Westrich, Carl W Imhauser
BACKGROUND: The correct amount of external rotation of the femoral component during TKA is controversial because the resulting changes in biomechanical knee function associated with varying degrees of femoral component rotation are not well understood. We addressed this question using a computational model, which allowed us to isolate the biomechanical impact of geometric factors including bony shapes, location of ligament insertions, and implant size across three different knees after posterior-stabilized (PS) TKA...
January 2018: Clinical Orthopaedics and related Research
Jasmin Diallo, Joe Wagener, Christine Schweizer, Tamara Horn Lang, Roxa Ruiz, Beat Hintermann
BACKGROUND: An acute ankle sprain can result in a bony avulsion of the lateral ankle ligaments. The extent of concomitant lesions and subsequent instability patterns are not clearly understood. The high incidence of old avulsion fractures found in symptomatic chronic ankle instability may indicate the need for primary fixation. METHODS: Ten patients (5 male, 5 female; mean age, 34 years; range, 15-64 years) with bony avulsion fractures of the fibula after acute ankle sprains were included...
March 1, 2018: Foot & Ankle International
Andres Kroker, Jennifer L Bhatla, Carolyn A Emery, Sarah L Manske, Steven K Boyd
Anterior cruciate ligament (ACL) tears are a common sports-related knee injury that increases the risk of developing post-traumatic osteoarthritis (OA). During OA progression bone microarchitecture changes in the affected knee, however, little is known about bone microarchitecture in knees with early stage OA. The purpose of this study is to investigate in a cohort of females predisposed to develop OA how bone microarchitecture in ACL reconstructed knees differs from uninjured contralateral knees as well as healthy control knees and how this relates to early changes in OA...
March 8, 2018: Bone
Kim Hébert-Losier, Lina Schelin, Eva Tengman, Andrew Strong, Charlotte K Häger
BACKGROUND: Anterior cruciate ligament (ACL) ruptures may lead to knee dysfunctions later in life. Single-leg tasks are often evaluated, but bilateral movements may also be compromised. Our aim was to use curve analyses to examine double-leg drop-jump kinematics in ACL-reconstructed, ACL-deficient, and healthy-knee cohorts. METHODS: Subjects with unilateral ACL ruptures treated more than two decades ago (17-28years) conservatively with physiotherapy (ACLPT , n=26) or in combination with reconstructive surgery (ACLR , n=28) and healthy-knee controls (n=25) performed 40-cm drop-jumps...
March 7, 2018: Knee
Hyuk-Soo Han, Seung-Baik Kang
BACKGROUND: This work aimed to evaluate the changes in the femoral posterior condylar offset (PCO) and tibial slope after posterior cruciate ligament (PCL)-substituting total knee arthroplasty (TKA), and to address the presence of any interactive effect between the two on knee flexion. METHODS: Fifty-two PCL-substituting TKAs were performed using a posterior referencing system. Three-dimensional reconstructed computed tomographic (CT) images were used to evaluate PCO and tibial slope before and after arthroplasty...
March 7, 2018: Knee
Tomohiro Yoshizawa, Yoshikazu Okamoto, Kenta Tanaka, Takeshi Makihara, Tomoko Tonoe, Manabu Minami, Masashi Yamazaki
OBJECTIVE: Multimodality elbow screening of adolescent baseball players shows apparent laterality in morphology and signal intensity of the medial epicondyle on dedicated magnetic resonance imaging. We aimed to elucidate actual imaging laterality in the medial epicondyle by comparing magnetic resonance images of the dominant and contradominant elbows and to clarify the clinical meaning and mechanism of this phenomenon. MATERIALS AND METHODS: We used a 0.2-T dedicated magnetic resonance imaging scanner...
March 9, 2018: Skeletal Radiology
Tserenchimed Purevsuren, Kyungsoo Kim, Myagmarbayar Batbaatar, SuKyoung Lee, Yoon Hyuk Kim
Understanding the mechanism of injury involved in lateral ankle sprain is essential to prevent injury, to establish surgical repair and reconstruction, and to plan reliable rehabilitation protocols. Most studies for lateral ankle sprain posit that ankle inversion, internal rotation, and plantarflexion are involved in the mechanism of injury. However, recent studies indicated that ankle dorsiflexion also plays an important role in the lateral ankle sprain mechanism. In this study, the contributions of ankle plantarflexion and dorsiflexion on the ankle joint were evaluated under complex combinations of internal and inversion moments...
March 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
Guang-Ying Zhang, Hong-Xia Zhu, En-Miao Li, Hao Shi, Wei Liu, Lei Zheng, Zheng-Wu Bai, Hong-Yu Ding
Objective: To evaluate the correlation between the injury patterns of the medial patellofemoral ligament (MPFL) on magnetic resonance imaging in an acute first-time lateral patellar dislocation (LPD) and incidence of a second-time LPD. Materials and Methods: Magnetic resonance images were prospectively analyzed in 147 patients after an acute first-time LPD with identical nonoperative management. The injury patterns of MPFL in acute first-time LPDs were grouped by location and severity for the analysis of the incidence of second-time LPD in a 5-year follow-up...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
Soliman Oushy, Lucas P Carlstrom, William E Krauss
BACKGROUND AND IMPORTANCE: Transverse ligament cysts (TLC) are rare, surgically complex lesions arising posterior to the odontoid process of C2. Direct compression of the cervicomedullary junction is a devastating consequence of untreated lesions. We report the first case of spontaneous TLC regression without surgical intervention. CLINICAL PRESENTATION: A 75-yr-old woman presented to an outside hospital with acute episodes of left face and upper extremity numbness...
March 5, 2018: Neurosurgery
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