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Find video protocols related to scientific articles indexed in Pubmed.
Adherence to commonly prescribed, home-based strength training exercises for the lower extremity can be objectively monitored using the Bandcizer.
J Strength Cond Res
PUBLISHED: 09-17-2014
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The purpose of this study was to investigate the validity of automatically stored exercise-data from the elastic band sensor© compared to a gold-standard stretchsensor during exercises commonly used for rehabilitation of the hip and knee. The design was a concurrent validity study. Participants performed three sets of 10 repetitions of six exercises with both sensors attached to the same elastic exercise band. These were knee extension, knee flexion, hip abduction and adduction, hip flexion and hip external rotation. Agreement between methods was calculated for: date, time-of-day, repetitions, total and single repetition, and contraction-phase specific time-under-tension (TUT). Files from the elastic band sensor© contained identical dates, time-of-day and number of repetitions for each exercise set compared to the gold-standard. Total TUT and total single repetition TUT were highly correlated with the stretch-sensor (r=0.83-0.96) but lower for contraction-phase specific TUTs (r=0.45-0.94). There were systematic differences between the methods ranging from 0.0-2.2 seconds (0.0-6.3%) for total TUT and total single repetition TUT, and between 0.0-3.3 seconds (0.0-33.3%) for contraction-phase specific TUTs. The elastic band sensor© is a valid measure of: date, time-of-day, number of repetitions and sets, total TUT, and total single repetition TUT during commonly used home-based strength training exercises. However, the elastic band sensor© seems unable to validly measure TUT for specific contraction-phases.
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[Treatment of patients with patellofemoral pain syndrome.]
Ugeskr. Laeg.
PUBLISHED: 08-07-2014
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Patellofemoral pain (PFP) is common among adolescents and adults. As the long-term prognosis is poor, optimal treatment is the key. The current evidence suggests that treatment should include training of the quadriceps and hip muscles with focus on correct alignment of the lower extremity. A positive short-term effect of foot orthotics is also documented and there is limited evidence of a positive effect of patella taping. There is no evidence for routine knee arthroscopy in the treating of PFP.
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Increased medial foot loading during drop jump in subjects with patellofemoral pain.
Knee Surg Sports Traumatol Arthrosc
PUBLISHED: 03-10-2014
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To compare medial-to-lateral plantar forces during drop jump and single leg squat in individuals with and without patellofemoral pain.
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Reliability and concurrent validity of a novel method allowing for in-shoe measurement of navicular drop.
J Foot Ankle Res
PUBLISHED: 02-10-2014
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Increased navicular drop is associated with increased risk of lower extremity overuse injuries and foot orthoses are often prescribed to reduce navicular drop. For laboratory studies, transparent shoes may be used to monitor the effect of orthoses but no clinically feasible methods exist. We have developed a stretch-sensor that allows for in-shoe measurement of navicular drop but the reliability and validity is unknown. The purpose of this study was to investigate: 1) the reliability of the stretch-sensor for measuring navicular drop, and 2) the concurrent validity of the stretch-sensor compared to the static navicular drop test.
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Half of 12-15-year-olds with knee pain still have pain after one year.
Dan Med J
PUBLISHED: 11-07-2013
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Adolescent knee pain is considered benign and presumed to disappear without treatment. However, this has never been investigated. The purpose of this study was to 1) compare leisure time sports participation, health-related quality of life (HRQoL) and body mass index between adolescents with and without self-reported knee pain, 2) investigate how many adolescents still have knee pain after one year and 3) identify risk factors for one-year persistence of knee pain.
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The gait pattern is not impaired in subjects with external snapping hip: a comparative cross-sectional study.
BMC Musculoskelet Disord
PUBLISHED: 07-05-2013
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Symptomatic external snapping hip is a painful condition, where pain in the trochantor region and limitations of daily activity dominate clinical findings. The aetiology of symptomatic external snapping hip is elusive, but previous studies have suggested that weakness of the hip abductors and an altered walking pattern may play a role in the development of symptomatic external snapping hip. The aim of this study was to compare the walking pattern and muscular activity of the hip muscles between subjects with symptomatic external snapping hip and healthy subjects.
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Care-seeking behaviour of adolescents with knee pain: a population-based study among 504 adolescents.
BMC Musculoskelet Disord
PUBLISHED: 03-29-2013
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Knee pain is common during adolescence. Adolescents and their parents may think that knee pain is benign and self-limiting and therefore avoid seeking medical care. However, long-term prognosis of knee pain is not favourable and treatment seems to offer greater reductions in pain compared to a "wait-and-see" approach. The purpose of this study was to describe the determinants of care-seeking behaviour among adolescents with current knee pain and investigate what types of treatment are initiated.
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Neuromuscular activity and knee kinematics in adolescents with patellofemoral pain.
Med Sci Sports Exerc
PUBLISHED: 03-26-2013
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This study aimed to investigate the neuromuscular control of the knee during stair descent among female adolescents with patellofemoral pain (PFP) and to report its association with self-reported clinical status assessed by the Knee Injury and Osteoarthritis Outcome Score (KOOS).
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High prevalence of daily and multi-site pain -- a cross-sectional population-based study among 3000 Danish adolescents.
BMC Pediatr
PUBLISHED: 03-17-2013
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Daily pain and multi-site pain are both associated with reduction in work ability and health-related quality of life (HRQoL) among adults. However, no population-based studies have yet investigated the prevalence of daily and multi-site pain among adolescents and how these are associated with respondent characteristics. The purpose of this study was to investigate the prevalence of self-reported daily and multi-site pain among adolescents aged 12--19 years and associations of almost daily pain and multi-site pain with respondent characteristics (sex, age, body mass index (BMI), HRQoL and sports participation).
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Novel stretch-sensor technology allows quantification of adherence and quality of home-exercises: a validation study.
Br J Sports Med
PUBLISHED: 03-06-2013
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OBJECTIVE: To investigate if a new stretch sensor attached to an elastic exercise band can assist health professionals in evaluating adherence to home exercises. More specifically, the study investigated whether health professionals can differentiate elastic band exercises performed as prescribed, from exercises not performed as prescribed. METHODS: 10 participants performed four different shoulder-abduction exercises in two rounds (80 exercise scenarios in total). The scenarios were (1) low contraction speed, full range of motion (0-90°), (2) high contraction speed, full range of motion (0-90°), (3) low contraction speed, diminished range of motion (0-45°) and (4) unsystematic pull of the elastic exercise band. Stretch-sensor readings from each participant were recorded and presented randomly to the raters. Two raters were asked to differentiate between unsystematic pull (scenario 4), from shoulder abduction strength exercises (scenarios 1-3). The next two raters were asked to identify the four different exercise scenarios (scenarios 1-4). RESULTS: The first two raters were able to differentiate between unsystematic pull (scenario 4) from shoulder abduction strength exercises (scenarios 1-3). They made no errors (100% success rate). The second two raters were both able to identify each of the 80 scenarios (scenarios 1-4). They too made no errors (100% success rate). CONCLUSIONS: The stretch-sensor readings from the elastic exercise band allow health professionals to quantify whether strength-exercises have been performed as prescribed. These findings have great implications for future clinical practice and research where home exercises are the drugs-of-choice, as they enable clinicians and researchers to measure the exact adherence and quality of the prescribed exercises.
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Pre-operative patient education is associated with decreased risk of arthrofibrosis after total knee arthroplasty: a case control study.
J Arthroplasty
PUBLISHED: 01-06-2013
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The purpose was to investigate risk factors for postoperative stiffness and long-term outcome following manipulation under anaesthesia (MUA). In one of the five Danish regions, all patients in a 4-year period who received MUA following total knee arthroplasty (N=36) were included in two case-control studies. Data on potential risk factors were extracted from the Danish Knee arthroplasty Register and from a postal questionnaire including long-term outcome measures regarding pain, function and quality of life (Oxford Knee Score and EQ-5D). Previous knee surgery and a high preoperative Knee Society Function Score were significant risk factors, whereas attending a preoperative information meeting was associated with a significantly decreased risk of postoperative stiffness requiring MUA (P<0.001). The long-term results following MUA (1-5 years) were equivalent to patients without postoperative stiffness.
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Hip and knee strength is not affected in 12-16 year old adolescents with patellofemoral pain - a cross-sectional population-based study.
PLoS ONE
PUBLISHED: 01-01-2013
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One of the rationales behind using strength training in the treatment of adolescents with Patellofemoral Pain (PFP) is that reduced strength of the lower extremity is a risk factor for PFP and a common deficit. This rationale is based on research conducted on adolescents >15 years of age but has never been investigated among young adolescents with PFP.
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Concentric and eccentric time-under-tension during strengthening exercises: validity and reliability of stretch-sensor recordings from an elastic exercise-band.
PLoS ONE
PUBLISHED: 01-01-2013
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Total, single repetition and contraction-phase specific (concentric and eccentric) time-under-tension (TUT) are important exercise-descriptors, as they are linked to the physiological and clinical response in exercise and rehabilitation.
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Patellofemoral pain syndrome and its association with hip, ankle, and foot function in 16- to 18-year-old high school students: a single-blind case-control study.
J Am Podiatr Med Assoc
PUBLISHED: 05-31-2011
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An increased pronated foot posture is believed to contribute to patellofemoral pain syndrome (PFPS), but the relationship between these phenomena is still controversial. The objectives of this study were to investigate the prevalence of PFPS in high school students and to compare passive internal and external hip rotation, passive dorsiflexion, and navicular drop and drift between healthy high school students and students with PFPS.
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Blood reinfusion combined with femoral nerve block in total knee replacement for patients with increased risk of bleeding.
J Orthop Surg (Hong Kong)
PUBLISHED: 04-27-2011
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To compare patients with increased risk of bleeding who received combined blood reinfusion and femoral nerve block in total knee replacement (TKR) to regular patients treated routinely with respect to pain relief, blood loss, and knee function.
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Intra- and interobserver reliability of quantitative ultrasound measurement of the plantar fascia.
J Clin Ultrasound
PUBLISHED: 01-10-2011
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To determine intra- and interobserver reliability and measurement precision of sonographic assessment of plantar fascia thickness when using one, the mean of two, or the mean of three measurements.
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Determination of normal values for navicular drop during walking: a new model correcting for foot length and gender.
J Foot Ankle Res
PUBLISHED: 01-26-2009
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The navicular drop test is a measure to evaluate the function of the medial longitudinal arch, which is important for examination of patients with overuse injuries. Conflicting results have been found with regard to differences in navicular drop between healthy and injured participants. Normal values have not yet been established as foot length, age, gender, and Body Mass Index (BMI) may influence the navicular drop. The purpose of the study was to investigate the influence of foot length, age, gender, and BMI on the navicular drop during walking.
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Efficacy of multimodal, systematic non-surgical treatment of knee osteoarthritis for patients not eligible for a total knee replacement: a study protocol of a randomised controlled trial.
BMJ Open
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It is recommended that non-operative treatment of knee osteoarthritis (KOA) should be individually tailored and include multiple treatment modalities. Despite these recommendations, no one has yet investigated the efficacy of combining several non-surgical treatment modalities in a randomised controlled study. The purpose of this randomised controlled study is to examine if an optimised, combined non-surgical treatment programme results in greater improvements in pain, function and quality of life in comparison with usual care in patients with KOA who are not eligible for total knee arthroplasty (TKA).
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A novel method for measuring in-shoe navicular drop during gait.
Sensors (Basel)
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Analysis of foot movement is essential in the treatment and prevention of foot-related disorders. Measuring the in-shoe foot movement during everyday activities, such as sports, has the potential to become an important diagnostic tool in clinical practice. The current paper describes the development of a thin, flexible and robust capacitive strain sensor for the in-shoe measurement of the navicular drop. The navicular drop is a well-recognized measure of foot movement. The position of the strain sensor on the foot was analyzed to determine the optimal points of attachment. The sensor was evaluated against a state-of-the-art video-based system that tracks reflective markers on the bare foot. Preliminary experimental results show that the developed strain sensor is able to measure navicular drop on the bare foot with an accuracy on par with the video-based system and with a high reproducibility. Temporal comparison of video-based, barefoot and in-shoe measurements indicate that the developed sensor measures the navicular drop accurately in shoes and can be used without any discomfort for the user.
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Dynamic midfoot kinematics in subjects with medial tibial stress syndrome.
J Am Podiatr Med Assoc
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Medial tibial stress syndrome (MTSS) is a common diagnosis. Several studies have demonstrated that excessive static navicular drop (ND) is related to the diagnosis. However, no studies have yet investigated ND and the velocity of ND during dynamic conditions. The aim of this study was to evaluate ND characteristics in patients with MTSS in dynamic and static conditions.
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Total knee replacement plus physical and medical therapy or treatment with physical and medical therapy alone: a randomised controlled trial in patients with knee osteoarthritis (the MEDIC-study).
BMC Musculoskelet Disord
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There is a lack of high quality evidence concerning the efficacy of total knee arthroplasty (TKA). According to international evidence-based guidelines, treatment of knee osteoarthritis (KOA) should include patient education, exercise and weight loss. Insoles and pharmacological treatment can be included as supplementary treatments. If the combination of these non-surgical treatment modalities is ineffective, TKA may be indicated. The purpose of this randomised controlled trial is to examine whether TKA provides further improvement in pain, function and quality of life in addition to optimised non-surgical treatment in patients with KOA defined as definite radiographic OA and up to moderate pain.
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[Unsatisfactory long-term prognosis of conservative treatment of patellofemoral pain syndrome].
Ugeskr. Laeg.
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This review overviews the long-term prognosis of conservatively treated patients with patellofemoral pain syndrome (PFPS). Median values of the 16 included studies show that 29% of soldiers, 27.8% of sports active and 24,7% of the general public will become pain free after they are diagnosed with PFPS. 21.5% of sports active and 23% of the general public diagnosed with PFPS will stop participating in sports because of knee pain. There is an indication that around one third diagnosed with PFPS will become pain free and one fourth will stop participating in sports because of knee pain.
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Early intervention for adolescents with patellofemoral pain syndrome--a pragmatic cluster randomised controlled trial.
BMC Musculoskelet Disord
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Self-reported knee pain is highly prevalent among adolescents. As much as 50% of the non-specific knee pain may be attributed to Patellofemoral Pain Syndrome (PFPS). In the short term, exercise therapy appears to have a better effect than patient education consisting of written information and general advice on exercise or compared with placebo treatment. But the long-term effect of exercise therapy compared with patient education is conflicting. The purpose of this study is to examine the short- and long-term effectiveness of patient education compared with patient education and multimodal physiotherapy applied at a very early stage of the condition among adolescents.
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Navicula drop test ad modum Brody: does it show how the foot moves under dynamic conditions?
J Am Podiatr Med Assoc
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Understanding foot motion and function during activity is essential for clinicians because different foot types may require different treatment or rehabilitation strategies. Brody introduced the static navicular drop (ND) test, which was meant as a quick clinical test to estimate foot pronation during dynamic conditions. However, how well static ND predicts dynamic ND during walking has never been investigated. The purpose of this study was to investigate how well static ND corresponds to dynamic measures of ND during treadmill walking.
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What is Visualize?

JoVE Visualize is a tool created to match the last 5 years of PubMed publications to methods in JoVE's video library.

How does it work?

We use abstracts found on PubMed and match them to JoVE videos to create a list of 10 to 30 related methods videos.

Video X seems to be unrelated to Abstract Y...

In developing our video relationships, we compare around 5 million PubMed articles to our library of over 4,500 methods videos. In some cases the language used in the PubMed abstracts makes matching that content to a JoVE video difficult. In other cases, there happens not to be any content in our video library that is relevant to the topic of a given abstract. In these cases, our algorithms are trying their best to display videos with relevant content, which can sometimes result in matched videos with only a slight relation.