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Marius A Jensen DC

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7 papers 0 to 25 followers Collection of useful neuro-musculoskeletal research.
Keun Jung Ryu, Bang Hyun Kim, Yohan Lee, Jinmyoung Dan, Jae Hwa Kim
BACKGROUND: Despite the essential role of vitamin D in muscle function, the prevalence of vitamin D deficiency has been reported to be very high. Recently, low vitamin D level was found to correlate with fatty degeneration of the rotator cuff tendon in humans and to negatively affect early healing at the rotator cuff repair site in an animal study. However, the effects of vitamin D level on severity of rotator cuff tear and healing after surgical repair have not been documented. PURPOSE: To evaluate (1) the prevalence of vitamin D deficiency among patients who underwent arthroscopic repair for a full-thickness rotator cuff tear, (2) the relationship of vitamin D level with severity of the rotator cuff tear, and (3) surgical outcomes after repair...
July 2015: American Journal of Sports Medicine
Marie-Lyne Nault, Mininder S Kocher, Lyle J Micheli
Os trigonum syndrome is the result of an overuse injury of the posterior ankle caused by repetitive plantar flexion stress. It is predominantly seen in ballet dancers and soccer players and is primarily a clinical diagnosis of exacerbated posterior ankle pain while dancing on pointe or demi-pointe or while doing push-off maneuvers. Symptoms may improve with rest or activity modification. Imaging studies, including a lateral radiographic view of the ankle in maximal plantar flexion, will typically reveal the os trigonum between the posterior tibial lip and calcaneus...
September 2014: Journal of the American Academy of Orthopaedic Surgeons
Philip Malloy, Alexander Morgan, Carolyn Meinerz, Christopher Geiser, Kristof Kipp
PURPOSE: While previous studies have examined the association between ankle dorsiflexion flexibility and deleterious landing postures, it is not currently known how landing kinetics are influenced by ankle dorsiflexion flexibility. The purpose of this study was to examine whether ankle dorsiflexion flexibility was associated with landing kinematics and kinetics that have been shown to increase the risk of anterior cruciate ligament (ACL) injury in female athletes. METHODS: Twenty-three female collegiate soccer players participated in a preseason screening that included the assessment of ankle dorsiflexion flexibility and lower-body kinematics and kinetics during a drop vertical jump task...
December 2015: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
J Simon, C Docherty
The purpose of this study is to quantify nerve conduction velocity differences in individuals with functional ankle instability compared to a "healthy" population. 38 participants ages 18-30 were recruited from a large university with approximately 43,000 students. 19 subjects (9 men and 10 women; age=21.0±1.4 years; height=172.0±9.3 cm; mass=74.4±1 2.4 kg) with symptoms of functional ankle instability were in the functional ankle instability group. 19 subjects (10 men, 9 women; age=22.0±2.6 years; height=169...
August 2014: International Journal of Sports Medicine
Jeppe Bo Lauersen, Ditte Marie Bertelsen, Lars Bo Andersen
BACKGROUND: Physical activity is important in both prevention and treatment of many common diseases, but sports injuries can pose serious problems. OBJECTIVE: To determine whether physical activity exercises can reduce sports injuries and perform stratified analyses of strength training, stretching, proprioception and combinations of these, and provide separate acute and overuse injury estimates. MATERIAL AND METHODS: PubMed, EMBASE, Web of Science and SPORTDiscus were searched and yielded 3462 results...
June 2014: British Journal of Sports Medicine
Andrew D Lynch, David S Logerstedt, Hege Grindem, Ingrid Eitzen, Gregory E Hicks, Michael J Axe, Lars Engebretsen, May Arna Risberg, Lynn Snyder-Mackler
BACKGROUND: No gold standard exists for identifying successful outcomes 1 and 2 years after operative and non-operative management of anterior cruciate ligament (ACL) injury. This limits the ability of a researcher and clinicians to compare and contrast the results of interventions. PURPOSE: To establish a consensus based on expert consensus of measures that define successful outcomes 1 and 2 years after ACL injury or reconstruction. METHODS: Members of international sports medicine associations, including the American Orthopaedic Society for Sports Medicine, the European Society for Sports Traumatology, Surgery, and Knee Arthroscopy and the American Physical Therapy Association, were sent a survey via email...
March 2015: British Journal of Sports Medicine
Sameer Dixit, John P DiFiori, Monique Burton, Brandon Mines
Patellofemoral pain syndrome (PFPS) is the most common cause of knee pain in the outpatient setting. It is caused by imbalances in the forces controlling patellar tracking during knee flexion and extension, particularly with overloading of the joint. Risk factors include overuse, trauma, muscle dysfunction, tight lateral restraints, patellar hypermobility, and poor quadriceps flexibility. Typical symptoms include pain behind or around the patella that is increased with running and activities that involve knee flexion...
January 15, 2007: American Family Physician
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