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Knee injuries

Anand Kaul, Sunil Manjila, Jonathan P Miller
: Isadore Max Tarlov (1905-1977) is primarily remembered for his 1938 description of the eponymous perineural "Tarlov cyst." However, during his long career as a neurosurgeon and researcher, he was responsible for many other observations and inventions that influenced the development of neurosurgery in the 20th century. While studying at Johns Hopkins Medical School he was acquainted with Walter Dandy, and he became the first resident to study under Wilder Penfield at the newly formed Montreal Neurological Institute...
November 2016: Neurosurgery
Sung Il Wang
In symptomatic discoid medial meniscus, partial meniscectomy is the principal treatment method and can yield promising short-term results. However, unlike the nondiscoid meniscus, discoid medial meniscus is frequently associated with horizontal cleavage tears, attributable to the presence of myxoid degeneration in the intrameniscal substance, in that it may potentially occur deteriorating long-term results because of re-tearing of remaining meniscus or secondary degeneration of cartilage of the medial compartment after meniscectomy...
October 14, 2016: Acta Orthopaedica et Traumatologica Turcica
A Prien, B Prinz, J Dvořák, A Junge
The aim of this study was to assess the prevalence of health problems and associated risk factors in former elite female football players. A cross-sectional research design was employed, using an online questionnaire on personal characteristics and health complaints during/after the career. One hundred fifty-two (response rate: 62.0%) former first German league players answered the survey. Around 70% described their current health as good or very good. Over half (57.9%) reported knee problems during the last 4 weeks while exercising and a third (33...
October 17, 2016: Scandinavian Journal of Medicine & Science in Sports
E K Greska, N Cortes, S I Ringleb, J A Onate, B L Van Lunen
Previous studies have shown conflicting information regarding leg dominance as an etiological factor for the risk of anterior cruciate ligament (ACL) injuries. It remains unclear if lower extremity neuromechanical limb asymmetries exist in experienced athletes. The purpose of this study was to evaluate lower extremity neuromechanical effects of leg dominance in female collegiate soccer athletes during an unanticipated side-step cutting task. Twenty female collegiate soccer players completed an unanticipated side-step cutting task, using their dominant and non-dominant legs...
October 17, 2016: Scandinavian Journal of Medicine & Science in Sports
Elizabeth Wellsandt, Ashutosh Khandha, Kurt Manal, Michael J Axe, Thomas S Buchanan, Lynn Snyder-Mackler
Anterior cruciate ligament (ACL) injury results in altered knee joint mechanics which frequently continue even after ACL reconstruction. The persistence of altered mechanical loading of the knee is of concern due to its likely role in the development of post-traumatic osteoarthritis (OA). Joint contact forces are associated with post-traumatic OA development, but evaluation of factors influencing the magnitude of contact forces after ACL injury is needed to advance current strategies aimed at preventing post-traumatic OA...
October 17, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Naruto Yoshida, Shun Kunugi, Sonoko Mashimo, Yoshihiro Okuma, Akihiko Masunari, Shogo Miyazaki, Tatsuya Hisajima, Shumpei Miyakawa
BACKGROUND: The purpose of this study is to examine the effects of different strike forms, during cutting, on knee joint angle and lower limb muscle activity. METHODS: Surface electromyography was used to measure muscle activity in individuals performing cutting manoeuvres involving either rearfoot strikes (RFS) or forefoot strikes (FFS). Three-dimensional motion analysis was used to calculate changes in knee angles, during cutting, and to determine the relationship between muscle activity and knee joint angle...
December 2016: Sports Medicine—Open
Ravi Gupta, Gladson David Masih, Gaurav Chander, Vikas Bachhal
BACKGROUND: Despite improvements in instability after anterior cruciate ligament (ACL) reconstruction, associated intraarticular injuries remain a major cause of concern and important prognostic factor for long term results as it may lead to osteoarthritis. Delay in ACL reconstruction has been in variably linked to increase in these injuries but there is lack of consensus regarding optimal timing of reconstruction. The goal of this study was to investigate delay in surgery and other factors, associated with intraarticular injuries in ACL deficient knees...
September 2016: Indian Journal of Orthopaedics
Robert Gabriel Coumine Riis, Marius Henriksen, Louise Klokker, Cecilie Bartholdy, Karen Ellegaard, Elisabeth Bandak, Bjarke Brandt Hansen, Henning Bliddal, Mikael Boesen
OBJECTIVE: The aims of the present knee osteoarthritis (KOA)-study were to: i) describe and compare the changes in MRI-measures of synovitis following an exercise program preceded by an intra-articular injection of either corticosteroid or isotonic saline and ii) investigate if any of the changes in patient reported outcome measures (PROMs) were associated with changes in MRI-measures of synovitis. DESIGN: We performed a randomized, double-blinded, placebo-controlled clinical trial evaluating the effects of intra-articular corticosteroid vs...
October 13, 2016: Osteoarthritis and Cartilage
Douglas W Powell, Samantha Andrews, Cris Stickley, D S Blaise Williams
: High- (HA) and low-arched athletes (LA) experience distinct injury patterns. These injuries are the result of the interaction of structure and biomechanics. A suggested mechanism of patellofemoral pain pertains to frontal plane knee moments which may be exaggerated in LA athletes. We hypothesize that LA athletes will exhibit greater peak knee abduction moments than high-arched athletes. METHODS: Twenty healthy female recreational athletes (10HA and 10LA) performed five over-ground barefoot walking and five barefoot running trials at a self-selected velocity while three-dimensional kinematics and ground reaction forces were recorded...
October 13, 2016: Human Movement Science
Pinar Akpinar, Arzu Atici, Feyza U Ozkan, Ilknur Aktas, Duygu G Kulcu, Kubra Neslihan Kurt
OBJECTIVE: To assess the reliability of the Spinal Cord Assessment Tool for Spastic Reflexes (SCATS). DESIGN: Observational reliability study of the SCATS . SETTING: Inpatient rehabilitation unit at an education and research hospital. PARTICIPANTS: This study included 47 subjects between the ages of 18 and 88 years with spinal cord injury, American Spinal Injury Association (ASIA) impairment scale grades from A to D with spasticity, and at least 6 months post injury...
October 12, 2016: Archives of Physical Medicine and Rehabilitation
Sufian S Ahmad, Johannes C Meyer, Anna M Krismer, Suhaib S Ahmad, Dimitrios S Evangelopoulos, Sven Hoppe, Sandro Kohl
PURPOSE: Clinical research in the area of anterior cruciate ligament (ACL) injury has shown substantial growth during the last decade. This was accompanied by the establishment of a wide range of outcome measures used to address the demands of clinical studies. The aim of this study was to evaluate outcome measures reported by highly cited level I trials in ACL research and identify factors influencing citation metrics. METHODS: The database of the Institute for Scientific Information (ISI) was utilized to screen journals under the subject categories "Orthopaedics", "Sports Sciences", "Radiology" and "General medicine" for the 50 most cited level I ACL trials based on predefined inclusion criteria...
October 14, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Pavlos E Evangelidis, Garry J Massey, Richard A Ferguson, Patrick C Wheeler, Matthew T G Pain, Jonathan P Folland
Hamstrings muscle fiber composition may be predominantly fast-twitch and could explain the high incidence of hamstrings strain injuries. However, hamstrings muscle composition in vivo, and its influence on knee flexor muscle function, remains unknown. We investigated biceps femoris long head (BFlh) myosin heavy chain (MHC) composition from biopsy samples, and the association of hamstrings composition and hamstrings muscle volume (using MRI) with knee flexor maximal and explosive strength. Thirty-one young men performed maximal (concentric, eccentric, isometric) and explosive (isometric) contractions...
October 13, 2016: Scandinavian Journal of Medicine & Science in Sports
Karen L Barker, David Beard, Andrew Price, Francine Toye, Martin Underwood, Avril Drummond, Gary Collins, Susan Dutton, Helen Campbell, Nicola Kenealy, Jon Room, Sarah E Lamb
BACKGROUND: The number of knee arthroplasties performed each year is steadily increasing. Although the outcome is generally favourable, up to 15 % fail to achieve a satisfactory clinical outcome which may indicate that the existing model of rehabilitation after surgery may not be the most efficacious. Given the increasing number of knee arthroplasties, the relative limited physiotherapy resources available and the increasing age and frailty of patients receiving arthroplasty surgery, it is important that we concentrate our rehabilitation resources on those patients who most need help to achieve a good outcome...
October 13, 2016: Trials
Eric C McCarty, Matthew J Kraeutler, Paula Langner, Shane Cook, Byron Ellis, Jenna M Godfrey
We conducted a study to identify and contrast patterns in the treatment of common injuries that occur in National Football League (NFL) players and National Collegiate Athletic Association (NCAA) Division I football players. Orthopedic team physicians for all 32 NFL and 119 NCAA Division I football teams were asked to complete a survey regarding demographics and preferred treatment of a variety of injuries encountered in football players. Responses were received from 31 (97%) of the 32 NFL and 111 (93%) of the 119 NCAA team physicians...
September 2016: American Journal of Orthopedics
Paul Rothenberg, Luis Grau, Lee Kaplan, Michael G Baraga
Football has the highest injury rate amongst popular American sports. Of those injuries that end seasons or careers, the knee is the most common culprit. This is of particular concern because knee injuries are most common in football. This article reviews 4 of the most common knee injuries in American football, with emphasis on epidemiology, risk factors, and treatment outcomes. The injuries reviewed are tears of the anterior cruciate ligament, medial collateral ligament, medial patellofemoral ligament, and posterior cruciate ligament...
September 2016: American Journal of Orthopedics
J-G Cao, L Wang, H-W Zhao, J Liu
OBJECTIVE: The objective of the study is to evaluate the clinic effectiveness of semitendinosus and gracilis transfer for the treatment of medial collateral ligament (MCL) injury of total knee arthroplasty (TKA). PATIENTS AND METHODS: From March 2009 to May 2014, a series of 11 patients with MCL injuries of primary TKA were treated by semitendinosus and gracilis transfer. Another 18 patients (21 knees) were recruited as control group. The two groups of patients were comparable for gender, age, body mass index, varus knee deformity, KSS score, joint activity degree and type of prosthesis comparison without significant difference (p > 0...
September 2016: European Review for Medical and Pharmacological Sciences
Raza Naseem Malik, Rachel Cote, Tania Lam
BACKGROUND: Skilled walking, such as obstacle crossing, is an essential component of functional mobility. Sensorimotor integration of visual and proprioceptive inputs is important for successful obstacle crossing. The objective of this study was to understand how proprioceptive deficits affect obstacle-crossing strategies when controlling for variations in motor deficits in ambulatory individuals with spinal cord injury (SCI). METHODS: 15 ambulatory individuals with SCI and 15 able-bodied controls were asked to step over an obstacle scaled to their motor abilities under full and obstructed vision conditions...
October 12, 2016: Journal of Neurophysiology
Brett D Steineman, Samuel G Moulton, Tammy L Haut Donahue, Cristián A Fontboté, Christopher M LaPrade, Tyler R Cram, Chase S Dean, Robert F LaPrade
BACKGROUND: The anterolateral meniscal root (ALMR) has been reported to intricately insert underneath the tibial insertion of the anterior cruciate ligament (ACL). Previous studies have begun to evaluate the relationship between the insertion areas and the risk of iatrogenic injuries; however, the overlap of the insertions has yet to be quantified in the sagittal and coronal planes. PURPOSE: To investigate the insertions of the human tibial ACL and ALMR using scanning electron microscopy (SEM) and to quantify the overlap of the ALMR insertion in the coronal and sagittal planes...
October 11, 2016: American Journal of Sports Medicine
C H Siebert, R Becker, M Buchner, J Förster, K-H Frosch, A Losch, P Niemeyer, S Scheffler
The number of patients with meniscal injuries is increasing constantly, but the treatment algorithms are undergoing continuous change. The effects of meniscal surgery, as well as the indications for the procedure, are currently a matter of heated debate. Various German speaking associations addressing topics related to the knee have joined forces to develop guidelines for the diagnosis, evaluation and therapy of meniscal lesions. The hope is that this first of two publications will shed light on some of the ongoing issues and offer guidance to health care professionals treating these patients...
October 11, 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
Keith Willett, David J Keene, Dipesh Mistry, Julian Nam, Elizabeth Tutton, Robert Handley, Lesley Morgan, Emma Roberts, Andrew Briggs, Ranjit Lall, Timothy J S Chesser, Ian Pallister, Sarah E Lamb
Importance: Ankle fractures cause substantial morbidity in older persons. Surgical fixation is the contemporary intervention but is associated with infection and other healing complications. Objective: To determine whether initial fracture treatment with close contact casting, a molded below-knee cast with minimal padding, offers outcome equivalent to that with immediate surgery, with fewer complications and less health resource use. Design, Setting, and Participants: This was a pragmatic, equivalence, randomized clinical trial with blinded outcome assessors...
October 11, 2016: JAMA: the Journal of the American Medical Association
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