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Lower extremity

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Jesper Augustsson
INTRODUCTION: Dynamic clinical tests of hip strength applicable on patients, non-athletes and athletes alike, are lacking. The aim of this study was therefore to develop and evaluate the reliability of a dynamic muscle function test of hip external rotation strength, using a novel device. A second aim was to determine if gender differences exist in absolute and relative hip strength using the new test. METHODS: Fifty-three healthy sport science students (34 women and 19 men) were tested for hip external rotation strength using a device that consisted of a strap connected in series with an elastic resistance band loop, and a measuring tape connected in parallel with the elastic resistance band...
August 2016: International Journal of Sports Physical Therapy
Zhi Long, Renwei Wang, Jia Han, Gordon Waddington, Roger Adams, Judith Anson
OBJECTIVES: To explore the effects of kinesiology taping (KT) and athletic taping (AT) on ankle proprioception when tested in functional, full weight-bearing stance. DESIGN: Cross-sectional study. METHODS: Twenty-four healthy university students participated. Proprioception was measured using the Active Movement Extent Discrimination Apparatus (AMEDA). The three testing conditions: no-taping, KT, AT, and foot tested were randomly assigned...
September 16, 2016: Journal of Science and Medicine in Sport
Matthew D Mucha, Wade Caldwell, Emily L Schlueter, Carly Walters, Amy Hassen
OBJECTIVES: Determine the association between hip abduction strength and lower extremity running related injury in distance runners. DESIGN: Systematic review. METHODS: Prospective longitudinal and cross sectional studies that quantified hip abduction strength and provided diagnosis of running related injury in distance runners were included and assessed for quality. Effect size was calculated for between group differences in hip abduction strength...
September 20, 2016: Journal of Science and Medicine in Sport
T Mizuno, Y Umemura
No abstract text is available yet for this article.
October 13, 2016: International Journal of Sports Medicine
Joseph D Lamplot, Matthew J Matava
Quadriceps and hamstring injuries occur frequently in football and are generally treated conservatively. While return to competition following hamstring strains is relatively quick, a high rate of injury recurrence highlights the importance of targeted rehabilitation and conditioning. This review describes the clinical manifestations of thigh-related soft-tissue injuries seen in football players. Two of these-muscle strains and contusions-are relatively common, while a third condition-the Morel-Lavallée lesion-is a rare, yet relevant injury...
September 2016: American Journal of Orthopedics
Azim Karim, Luis Pulido, Stephen Incavo
Accelerated physical therapy (PT) protocols are a potential mechanism for achieving early mobilization and safe discharge from hospital after elective primary total hip arthroplasty (THA) or total knee arthroplasty (TKA). We compared 2 groups of patients who underwent elective unilateral THA or TKA-those who started PT the same day (Day 0) and those who started PT the next day (Non-Day 0). The difference in mean (SD) hospital length of stay between the Day 0 and Non-Day 0 groups was not statistically significant for THA patients, 2...
September 2016: American Journal of Orthopedics
Alexandre Dias Lopes, Luiz Carlos Hespanhol Júnior, Simon S Yeung, Leonardo Oliveira Pena Costa
BACKGROUND: Musculoskeletal injuries occur frequently in runners and despite many studies about running injuries conducted over the past decades it is not clear in the literature what are the main running-related musculoskeletal injuries (RRMIs). OBJECTIVE: The aim of this study is to systematically review studies on the incidence and prevalence of the main specific RRMIs. METHODS: An electronic database search was conducted using EMBASE (1947 to October 2011), MEDLINE (1966 to October 2011), SPORTDiscus(1975 to October 2011), the Latin American and Caribbean Center on Health Sciences Information (LILACS) [1982 to October 2011] and the Scientific Electronic Library Online (SciELO) [1998 to October 2011] with no limits of date or language of publication...
October 1, 2012: Sports Medicine
S Paulson, W A Braun
Barefoot running and running using minimalist footwear have become increasingly popular in recent years. Footwear choice may affect running mechanics and the metabolic cost of running. To investigate these factors, 8 well-trained, female distance runners (mean age=20.1±1.4 years) were recruited to participate in the study. Following orientation to testing procedures, subjects completed 3 running economy tests on separate days. Treatment order (barefoot, minimalist footwear and running shoe) was counter-balanced...
August 2014: International Journal of Sports Medicine
M Tyrrell Burrus, Brian C Werner, Jim S Starman, F Winston Gwathmey, Eric W Carson, Robert P Wilder, David R Diduch
Chronic leg pain is commonly treated by orthopaedic surgeons who take care of athletes. The sources are varied and include the more commonly encountered medial tibial stress syndrome, chronic exertional compartment syndrome, stress fracture, popliteal artery entrapment syndrome, nerve entrapment, Achilles tightness, deep vein thrombosis, and complex regional pain syndrome. Owing to overlapping physical examination findings, an assortment of imaging and other diagnostic modalities are employed to distinguish among the diagnoses to guide the appropriate management...
June 2015: American Journal of Sports Medicine
Brian Gallagher, Fotios P Tjoumakaris, Marc I Harwood, Robert P Good, Michael G Ciccotti, Kevin B Freedman
BACKGROUND: Structure-modifying medications or nutraceuticals may be an effective treatment for osteoarthritis. This study identified 12 treatments that may possess chondroprotective properties: oral glucosamine; chondroitin; nonsteroidal anti-inflammatory drugs (NSAIDs); polyunsaturated fatty acids; S-adenosylmethionine; avocado and soybean unsaponifiable fractions; methylsulfonylmethane; vitamins C, D, and E; intra-articular injections of hyaluronic acid; and platelet-rich plasma (PRP)...
March 2015: American Journal of Sports Medicine
T Mizuno, Y Umemura
The purpose of this study was to identify changes in ankle range of motion and passive mechanical properties of the muscle-tendon unit after dynamic stretching. 12 healthy subjects participated in this study. Displacement of the muscle-tendon junction was measured using ultrasonography while the ankle was passively dorsiflexed at 1°/sec to its maximal dorsiflexion angle. Passive torque was also measured using an isokinetic dynamometer. Measurements were conducted pre-intervention, immediately after the intervention and 5, 10, 15 and 30 min post-intervention...
September 27, 2016: International Journal of Sports Medicine
Jorge Chahla, Nicolas S Piuzzi, Justin J Mitchell, Chase S Dean, Cecilia Pascual-Garrido, Robert F LaPrade, George F Muschler
BACKGROUND: Intra-articular cellular therapy injections constitute an appealing strategy that may modify the intra-articular milieu or regenerate cartilage in the settings of osteoarthritis and focal cartilage defects. However, little consensus exists regarding the indications for cellular therapies, optimal cell sources, methods of preparation and delivery, or means by which outcomes should be reported. METHODS: We present a systematic review of the current literature regarding the safety and efficacy of cellular therapy delivered by intra-articular injection in the knee that provided a Level of Evidence of III or higher...
September 21, 2016: Journal of Bone and Joint Surgery. American Volume
James T Ninomiya, John C Dean, Stephen J Incavo
No abstract text is available yet for this article.
September 21, 2016: Journal of Bone and Joint Surgery. American Volume
Karl F Bowman, Jeremy Fox, Jon K Sekiya
The hip is a complex anatomic structure composed of osseous, ligamentous, and muscular structures responsible for transferring the weight of the body from the axial skeleton into the lower extremities. This must be accomplished while allowing for dynamic loading during activities such as gait and balance. The evaluation of hip pain and periarticular pathology can be challenging because of the complex local anatomy and broad differential diagnosis. Recent advancements in the evaluation and surgical treatment of hip pathology have led to a renewed interest in the management of these disorders...
August 2010: Arthroscopy: the Journal of Arthroscopic & related Surgery
Jeremy M Burnham, Michael C Yonz, Kaley E Robertson, Rachelle McKinley, Benjamin R Wilson, Darren L Johnson, Mary Lloyd Ireland, Brian Noehren
OBJECTIVES: Evaluate the relationship of hip and trunk muscle function with the Single Leg Step-Down test (SLSD). STUDY DESIGN: Laboratory study. SETTING: Biomechanics Laboratory. PARTICIPANTS: 71 healthy participants with no history of anterior cruciate ligament (ACL) or lower extremity injury in the last 3 months completed this study (38 males, 33 females; mean 25.49 ± 0.62 years). MAIN OUTCOMES: Hip abduction (HABD), external rotation (HER), and extension (HEXT) peak isometric force were measured...
May 20, 2016: Physical Therapy in Sport
Guilherme S Nunes, Marcos de Noronha
OBJECTIVES: To investigate the impact different ways to define reference balance can have when analysing time to stabilization (TTS). Secondarily, to investigate the difference in TTS between people with chronic ankle instability (CAI) and healthy controls. DESIGN: Cross-sectional study. SETTING: Laboratory. PARTICIPANTS: Fifty recreational athletes (25 CAI, 25 controls). MAIN OUTCOME MEASURES: TTS of the center of pressure (CoP) after maximal single-leg vertical jump using as reference method the single-leg stance, pre-jump period, and post-jump period; and the CoP variability during the reference methods...
August 1, 2016: Physical Therapy in Sport
Karen G Roos, Zachary Y Kerr, Timothy C Mauntel, Aristarque Djoko, Thomas P Dompier, Erik A Wickstrom
BACKGROUND: Ankle sprains are a common injury in collegiate sports. Few studies have examined the epidemiology of individual ligament injuries, specifically the lateral ligament complex (LLC) of the ankle. PURPOSE: To describe the epidemiology, including the estimated yearly national incidence, of LLC sprains among National Collegiate Athletic Association (NCAA) athletes. STUDY DESIGN: Descriptive epidemiology study. METHODS: Injury surveillance data for 25 sports from the NCAA Injury Surveillance Program (NCAA-ISP) for the academic years 2009-2010 to 2014-2015 were used for analysis...
August 29, 2016: American Journal of Sports Medicine
Patrick O McKeon, Christopher D Ingersoll, D Casey Kerrigan, Ethan Saliba, Bradford C Bennett, Jay Hertel
PURPOSE: The purpose of this randomized controlled trial was to determine the effect of a 4-wk balance training program on static and dynamic postural control and self-reported functional outcomes in those with chronic ankle instability (CAI). METHODS: Thirty-one young adults with self-reported CAI were randomly assigned to an intervention group (six males and 10 females) or a control group (six males and nine females). The intervention consisted of a 4-wk supervised balance training program that emphasized dynamic stabilization in single-limb stance...
October 2008: Medicine and Science in Sports and Exercise
K-Y Lee, H-J Lee, S-E Kim, P-B Choi, S-H Song, Y-S Jee
Chronic ankle instability (CAI) after ankle sprains has been shown to cause foot and ankle disability. Although rehabilitation programs for patients with CAI have been performed in related studies, few researchers have studied overall performance including pain, balance, and isokinetic torque. The purpose of this study was to determine if a short-term rehabilitation program that addressed range of motion (ROM), functional muscular performance, and neuromuscular control, can improve the foot/ankle disability index (FADI), FADI-Sport, ROM, star excursion balance test (SEBT), and isokinetic torque for patients with CAI...
June 2012: International Journal of Sports Medicine
Sheri A Hale, Jay Hertel, Lauren C Olmsted-Kramer
STUDY DESIGN: Prospective, randomized controlled trial. OBJECTIVE: To examine the effects of a 4-week rehabilitation program for chronic ankle instability (CAI) on postural control and lower extremity function. BACKGROUND: CAI is associated with residual symptoms, performance deficits, and reinjury. Managing CAI is challenging and more evidence is needed to guide effective treatment. METHODS AND MEASURES: Subjects with unilateral CAI were randomly assigned to the rehabilitation (CAI-rehab, n=16) or control (CAI-control, n=13) group...
June 2007: Journal of Orthopaedic and Sports Physical Therapy
2016-09-19 13:39:12
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