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Anterior cruciate ligament

Jinkyu Lee, Yongnam Song, Choongsoo S Shin
BACKGROUND: During landing, the ankle angle at initial contact (IC) exhibits relatively wide individual variation compared to the knee and hip angles. However, little is known about the effect of different IC ankle angles on energy dissipation. RESEARCH QUESTION: The purpose of this study was to investigate the relationship between individual ankle angles at IC and energy dissipation in the lower extremity joints. METHODS: Twenty-seven adults performed single-leg landings from a 0...
March 7, 2018: Gait & Posture
Enda F Whyte, Chris Richter, Siobhan O'Connor, Kieran A Moran
Anterior cruciate ligament (ACL) injuries frequently occur during side cutting maneuvers when fatigued or reacting to the sporting environment. Trunk and hip biomechanics are proposed to influence ACL loading during these activities. However, the effects of fatigue and unanticipation on the biomechanics of the kinetic chain may be limited by traditional discrete point analysis. We recruited twenty-eight male, varsity, Gaelic footballers (21.7±2.2 years; 178.7±14.6m; 81.8±11.4kg) to perform anticipated and unanticipated side cutting maneuvers pre- and post- a high intensity, intermittent exercise protocol (HIIP)...
March 13, 2018: Journal of Strength and Conditioning Research
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
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
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
Eric J Cotter, Charles P Hannon, Philip Locker, Annabelle Davey, Kevin C Wang, Nikhil N Verma, Brian J Cole
Background: Patient-reported outcome (PRO) surveys have become increasingly important in both improving patient care and assessing outcomes. Purpose/Hypothesis: The purpose of this study was to evaluate which variables are associated with compliance with completing PRO surveys in patients who have undergone anterior cruciate ligament reconstruction (ACLR). The authors hypothesized that older patient age and longer time since ACLR would be associated with lower completion rates of PRO surveys preoperatively and at postoperative time points...
March 2018: Orthopaedic Journal of Sports Medicine
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
Ji Eun Kim, Da-Hyun Song, Soo Hyun Kim, Youngmee Jung, Sang Jun Kim
Osteoarthritis (OA) is characterized by a progressive loss of articular cartilage, subchondral bone sclerosis and synovial inflammation and is the most common chronic condition worldwide today. However, most treatments have focused on pain relief and OA symptoms. For these reasons, many ongoing studies are currently trying to develop efficient and successful therapies based on its pathology. Animal models that mimic the histopathology and symptoms of OA have a critical role in OA research and make it possible to investigate both secondary osteoarthritic changes due to a precedent event such as traumatic injury and naturally occurring changes for the development of therapeutics which can be tested in preclinical and clinical OA trials...
2018: PloS One
Hayley Jansson, Steven J Narvy, Nima Mehran
No abstract text is available yet for this article.
March 13, 2018: JBJS Reviews
Raffaele Iorio, Ferdinando Iannotti, Antonio Ponzo, Lorenzo Proietti, Andrea Redler, Fabio Conteduca, Andrea Ferretti
PURPOSE: To evaluate functional and radiological results in patients older than 50 years who underwent an anatomic anterior cruciate ligament (ACL) reconstruction with semitendinosus and gracilis tendons and to compare these results with those of patients younger than 40 years. METHODS: Thirty-six patients over the age of 50 years with a diagnosis of ACL complete lesion and 36 consecutive patients under 40 years were included in this prospective study. Follow-up included clinical evaluation using Lysholm, IKDC, and Tegner scores and a KT-1000 arthrometric evaluation...
March 12, 2018: International Orthopaedics
Chae Chil Lee, Yoon Seok Youm, Sung Do Cho, Seung Hyun Jung, Mun Hee Bae, Seon Jae Park, Han Wook Kim
PURPOSE: The purpose of this study was to evaluate the association between posterior tibial slope (PTS) and anterior cruciate ligament (ACL) graft rupture in patients who have undergone ACL reconstruction by comparing results in patients who experienced graft rupture and a matched control group. METHODS: The study included 64 knees of 64 patients (58 men and 6 women), of mean age 31 years (range, 18-60 years) who underwent revision ACL reconstruction for ACL graft rupture, as well as a control group without ACL graft rupture matched for age, sex, body mass index (BMI), and left or right side...
March 9, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
Bethany L Hansberger, Shellie Acocello, Lindsay V Slater, Joseph M Hart, Jatin P Ambegaonkar
CONTEXT:   Anterior cruciate ligament (ACL) injuries often occur during jump landings and can have detrimental short-term and long-term functional effects on quality of life. Despite frequently performing jump landings, dancers have lower incidence rates of ACL injury than other jump-landing athletes. Planned versus unplanned activities and footwear may explain differing ACL-injury rates among dancers and nondancers. Still, few researchers have compared landing biomechanics between dancers and nondancers...
March 12, 2018: Journal of Athletic Training
Darren de Sa, Ajaykumar Shanmugaraj, Melissa Weidman, Devin C Peterson, Nicole Simunovic, Volker Musahl, Olufemi R Ayeni
The all-inside technique (AIT) for anterior cruciate ligament reconstruction (ACLR) is gaining popularity as a more anatomic, less invasive, technique with the potential for more rapid recovery. This systematic review aims to critically assess components of the technique, its safety profile, outcomes, and complications. PUBMED, EMBASE, and MEDLINE were searched for studies discussing primary ACLR using the AIT. Article screening, quality assessment, and data abstraction were completed in duplicate, and a minimal clinically important difference (MCID) was used to frame the descriptive results in a clinically significant context...
February 8, 2018: Journal of Knee Surgery
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
Athol Thomson, Einar Einarsson, Clint Hansen, Chris Bleakley, Rod Whiteley
OBJECTIVES: Compare maximum plantar force (Fmax) during running in soccer players following anterior cruciate ligament reconstruction (ACLR) as they pass return to sport (RTS) criteria. DESIGN: Case control study. METHODS: Soccer players after ACLR (n=16) and matched healthy controls (n=16) ran on a treadmill at 12, 14 and 16km/h while plantar loading data was measured using an in-shoe pressure system (Pedar-X, Novel). Fmax and contact time of the injured and uninjured limbs in athletes <9months post-ACLR and those ≥9months ACLR were compared to healthy players (no ACLR)...
March 1, 2018: Journal of Science and Medicine in Sport
Lars Bischoff, Christian Babisch, Jürgen Babisch, Frank Layher, Klaus Sander, Georg Matziolis, Stefan Pietsch, Eric Röhner
INTRODUCTION: The use of Kinesio tape (KT) to improve proprioception is a matter of considerable debate. In comparison, the rupture of the anterior cruciate ligament is a sufficiently well-investigated injury with a proven compromise of proprioception. The objective of the present study was to assess a supportive effect on proprioception after KT application, taking the anterior cruciate ligament (ACL) rupture as an example. MATERIALS AND METHODS: Forty-eight patients who had suffered an ACL rupture, confirmed clinically and by magnetic resonance imaging, and who were treated conservatively or were awaiting surgery were included in this study...
March 10, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
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
Hope C Davis, Jeffery T Spang, Richard F Loeser, Staffan Larsson, Veronica Ulici, J Troy Blackburn, R Alexander Creighton, Ganesh M Kamath, Joanne M Jordan, Stephen W Marshall, Brian Pietrosimone
BACKGROUND: To determine the association between time from injury to ACL reconstruction (TimeInjury-ACLR ) and biochemical markers of cartilage metabolism and inflammation six months following ACL reconstruction (ACLR). METHODS: Individuals with a unilateral ACL injury were enrolled at initial presentation in the orthopedic clinic; blood was collected six months following ACLR. Enzyme-linked immunosorbent assays were used to analyze the ratio of serum concentrations of type-II collagen breakdown (C2C) to synthesis (CPII), plasma matrix metalloproteinase-3 (MMP-3), interleukin-6 (IL-6), and serum aggrecan neoepitope (ARGS)...
March 7, 2018: Knee
Joel B Huleatt, Carl W Nissen, Matthew D Milewski
The treatment of sports injuries in the skeletally immature has a unique set of complications. Growth deformity may occur after anterior cruciate ligament reconstruction; therefore, skeletal age is used to help guide the choice between physeal sparing and transphyseal techniques. Arthrofibrosis after tibial spine fracture fixation can be reduced by initiating immediate range of motion, and should be treated early and cautiously to avoid iatrogenic fracture. Nonunions of medial epicondyle elbow fractures are more common with nonoperative treatment, but seldom lead to clinical problems outside of certain athletes...
April 2018: Clinics in Sports Medicine
James E Christensen, Mark D Miller
Anterior cruciate ligament (ACL) reconstruction is one of the most commonly performed procedures in the United States. Although complications are rare in ACL surgery, failure to appreciate them can lead to significant patient morbidity in the short and long terms. More common complications in ACL reconstruction include tunnel malposition, infection, tunnel osteolysis, fixation failure, fracture, arthrofibrosis, graft site morbidity, and deep vein thrombosis or pulmonary embolism. Tunnel malposition is the most common technical error in ACL reconstruction leading to failure...
April 2018: Clinics in Sports Medicine
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