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The aim of the present study was to assess the prevalence and types of injuries in 1336 young, non-professional female dancers (age 8-16 years) who participated in a descriptive mixed (cross-sectional/ longitudinal) cohort study. Previous and current injuries were diagnosed and later classified into seven major categories. Our results show that 569 (42.6%) of the dancers examined manifested an injury. Advanced age and increased exposure to dance yielded an equivalent increase in the prevalence of injured girls: from 1 of 10 girls in the 8-year-old age cohort (mean = 1.05 per 1000 h) to 1 of 3 girls in the 14-year-old age cohort (mean = 1.25 per 1000 h). Time elapsing between first and second injuries decreased with age. Among the youngest group of dancers (8-9 years) the most common injury was tendonitis (41%), while in adolescent dancers (14-16 years) knee injuries became the leading cause of complaints (33%). We conclude that young, non-professional dancers are at high risk of injury. Dancers who had been injured in the past were at higher risk for re-injury. Tendonitis in the foot or ankle joint was a common injury among the youngest dancers, while knee injuries were common among adolescent dancers. A routine screening of this dancer population by an expert in dance medicine will reduce the risk for an injury.
Background: The angle of turnout is thought to predispose professional dancers to overuse musculoskeletal injuries of the lower limb; yet, the influence of angle of turnout on foot posture is currently unknown.
Methods: Twelve professional contemporary dancers (five women and seven men; mean age, 26.8 years) were recruited. The angle of gait and angle of turnout were measured using a quasi-static clinical tracing method. Foot posture was assessed in the base of gait and angle of turnout using the Foot Posture Index. Each dancer completed a dance history and injury questionnaire.
Results: The results show a tendency toward a pronated foot posture (mean, 9°) in the angle of turnout position. A significant relationship was noted between the Foot Posture Index and angle of turnout (ρ = 0.933–0.968, P < .01) and between the number of reported injuries and change in foot posture in the angle of turnout (ρ = 0.789, P < .01) (right foot only). Twenty-eight injuries were reported; male dancers experienced a mean of 2.8 injuries and females a mean of 1.6 injuries. An inverse relationship was noted between age at training initiation and total reported injuries (r =−0.867, P < .01). All of the dancers reported a history of injury to the spine or lower limb, and 9 of the 12 reported an injury within the previous 12 months.
Conclusions: Turnout is one of the most fundamental aspects of dance technique. This study suggests a trend toward pronation in angle of turnout and a link to lower-limb musculoskeletal injury
Extrinsic and intrinsic risk factors associated with injuries in young dancers aged 8-16 years.
Steinberg N, Siev-Ner I, Peleg S, Dar G, Masharawi Y, Zeev A, Hershkovitz I. J Sports Sci. 2012 Jan 30
In the present study, we tried to determine the association between joint ranges of motion, anatomical anomalies, body structure, dance discipline, and injuries in young female recreational dancers. A group of 1336 non-professional female dancers (age 8-16 years), were screened. The risk factors considered for injuries were: range of motion, body structure, anatomical anomalies, dance technique, and dance discipline. Sixty-one different types of injuries and symptoms were identified and later classified into four major categories: knee injuries, foot or ankle tendinopathy, back injuries, and non-categorized injuries. We found that 569 (42.6%) out of the 1336 screened dancers, were injured.The following factors were found to be associated with injuries (P < 0.05): (a) range of motion (e.g. dancers with hyper hip abduction are more prone to foot or ankle tendinopathies than dancers with hypo range of motion; (b) anatomical anomalies (scoliotic dancers manifested a higher rate of injuries than non-scoliotic dancers); (c) dance technique (dancers with incorrect technique of rolling-in were found to have more injuries than dancers with correct technique); (d) dance discipline (an association between time of practice en pointe and injury was observed); and (e) early age of onset of menarche decreased risk for an injury. No association between body structure and injury was found. Injuries among recreational dancers should not be overlooked, and therefore precautionary steps should be taken to reduce the risk of injury, such as screening for joint range of motion and anatomical anomalies. Certain dance positions (e.g. en pointe) should be practised only when the dancer has already acquired certain physical skills, and these practices should be time controlled
Modern (or contemporary) dance has become increasingly popular, yet little has been reported with respect to modern dance injuries and their consequences. The purpose of this study is to define the incidence, risk factors, and management of musculoskeletal injuries in professional modern dancers. A total of 184 dancers in the United States completed an anonymous 17-page questionnaire on their injuries, including extensive details regarding the two most severe injuries that had occurred in the prior 12 months. According to their self-reports, a total of 82% of the dancers had suffered between one and seven injuries. The foot and ankle (40%) was the most common site of injury, followed by the lower back (17%) and the knee (16%). The rate of injuries was 0.59 per 1,000 hours of class and rehearsal. Injured male dancers returned to full dancing after a median of 21 days, while females returned after a median of 18 days. Most dancers missed no performances due to injury. Of the medical consultations sought by dancers for their injuries, 47% were made to physicians, 41% to physical therapists, and 34% to chiropractors. The majority of dancers adhered to the advice given them by consultants (87% of males and 78% of females for the most severe injury). While the majority of injuries were considered work-related (61% of the most severe injury and 69% of the second most severe), few were covered by Workers' Compensation insurance (12% and 5% respectively). These professional modern dancers suffer from a rate of injury similar to other groups of professional dancers. Most dancers return to a partial level of dancing several weeks before attempting full-capacity dancing.
STUDY DESIGN: Prospective, descriptive single-cohort study.
OBJECTIVE: To assess the incidence and severity of injuries to a professional ballet company over 1 year.
METHODS: Data for an elite-level ballet company of 52 professional dancers were collected by an in-house medical team using a time-loss injury definition.
RESULTS: A total of 355 injuries were recorded, with an overall injury incidence of 4.4 injuries per 1000 hours (female, 4.1; male, 4.8; P>.05) and a mean of 6.8 injuries per dancer (female, 6.3; male, 7.3; P>.05). Mean injury severity was 7 days (female, 4; male, 9; P<.05). Most injuries were classified as overuse (64%; female, 68%; male, 60%; P>.05); mean severity of injury was 3 days for females and 9 days for males (P<.05). The percentage of traumatic injuries was 32% for females and 40% for males (P<.05); the corresponding severity was 6 and 10 days, respectively (P<.05).
CONCLUSION: The relatively high number of injuries reported and the resulting loss of dance time support the need to introduce interventions to reduce the risk of injury in professional dancers.
The objective of this study was to assemble and synthesize the best available literature from 2004 to 2008 on musculoskeletal injury and pain in dancers. MEDLINE and CINAHL were the primary sources of data. Indexed terms such as dance, dancer, dancing, athletic injuries, occupational injuries, sprains and strains, musculoskeletal diseases, bone density, menstruation disturbances, and eating disorders were used to search the databases. Citations were screened for relevance using a priori criteria, and relevant studies were critically reviewed for scientific merit by the best-evidence synthesis method. After screening, 19 articles were found to be scientifically admissible. Data from accepted studies were abstracted into evidence tables relating to: prevalence and associated factors; incidence and risk factors; intervention; and injury characteristics and prognosis of musculoskeletal injury and pain in dancers. Principal findings included: a high prevalence and incidence of lower extremity, hip and back injuries; preliminary evidence that psychosocial and psychological issues such as stress and coping strategies affect injury frequency and duration; history of a previous lateral ankle sprain is associated with an increased risk of ankle sprain in the contralateral ankle in dance students; fatigue may play a role in ACL injury in dancers; acute hamstring strains in dancers affect tendon more than muscle tissue, often resulting in prolonged absence from dance. It is concluded that, while there are positive developments in the literature on the epidemiology, diagnosis, prognosis, treatment, and prevention of MSK injuries and pain in dancers, much room for improvement remains. Suggestions for future research are offered.
Musculoskeletal disorders (MSDs) in dancers and former dancers participating in the largest dance festival in the world
L. Grego Muniz de Araújo, H. Luiz Monteiro, C. Marcelo Pastre Science & Sports; 8 November 2012
To verify the presence of musculoskeletal disorders (MSD) in dancers and former dancers participating in the 27th Joinville Dance Festival.
Material and methods
The research was conducted at the 27th Joinville Dance Festival in Santa Catarina, Brazil, with 173 participants in the competition, where 139 were dancers and 34 were former dancers with at least ten years of practice. In order to obtain information related to MSDs, dancers answered a specific questionnaire.
The study group consisted of adults (28 ± 9 years) with body mass index within the normal range (21.3 ± 2.3) with high weekly training time (955.7 ± 837.2) and featuring long-time experience in dancing (18 ± 7 years). The lumbar spine and knees were the most affected by MSDs. The pain of high intensity was the symptom that most often appeared in reports among survey participants.
It is important to have deeper knowledge of the prevalence of pain among professional dancers, the factors associated with pain conditions and its impact on everyday life in order to plan new forms of prevention and plan new forms of prevention and treatment within a multidisciplinary approach.
Press release: Study finds increase in dance-related injuries in children and adolescents
Dance is a beautiful form of expression, but it could be physically taxing and strenuous on the human body, particularly for children and adolescents. A new study by researchers at the Center for Injury Research and Policy of The Research Institute at Nationwide Children's Hospital examined dance-related injuries among children and adolescents 3 to 19 years of age from 1991 to 2007. During the 17-year study period, an estimated 113,000 children and adolescents were treated in U.S. emergency departments for dance-related injuries.
According to the study, which is being published in the February 2013 print issue of the Journal of Physical Activity and Health, the annual number of dance-related injuries increased 37 percent, climbing from 6,175 injuries in 1991 to 8,477 injuries in 2007. Sprains and/or strains (52 percent) were found to be the most common types of dance-related injuries, with falls (45 percent) being the most common causes of injuries.
The study also found that 4 out of 10 injured dancers were between 15 and 19 years of age.
"We believe this could be due to adolescent dancers getting more advanced in their skills, becoming more progressed in their careers and spending more time training and practicing," said Kristin Roberts MS, MPH, lead author of the study and senior research associate at the Center for Injury Research and Policy at Nationwide Children's Hospital. "We encourage children to keep dancing and exercising. But it is important that dancers and their instructors take precautions to avoid sustaining injuries."
"Safety precautions such as staying well-hydrated, properly warming up and cooling down, concentrating on the proper technique and getting plenty of rest can help prevent dance-related injuries," said the study's senior author Lara McKenzie, PhD, principal investigator at the Center for Injury Research and Policy at Nationwide Children's and also a faculty member at The Ohio State University College of Medicine.
The Sports Medicine experts at Nationwide Children's treat the types of injuries seen in performing arts and dance athletes. Due to the increase in the number of dance-related injuries seen during the last few years, they have designed a number of services to address the needs of the young dancer.
"Adolescents are still growing into their bodies and as such often develop imbalances that can lead to injury," said Eric Leighton, ATC, an athletic trainer in Sports Medicine at Nationwide Children's. "It's critical that intervention and injury prevention be made available to them to address balance, strength and functional body control deficits as they grow. From pointe readiness screens to injury prevention programming, our team has a comprehensive approach to address the needs of these athletes."
This is the first study to use a nationally representative sample to examine dance-related injuries that were treated in U.S. emergency departments. Data for this study were obtained from the National Electronic Injury Surveillance System (NEISS), which is operated by the U.S. Consumer Product Safety Commission. The NEISS provides information on consumer product-related and sports and recreation-related injuries treated in hospital emergency departments across the country.
Injuries among Talented Young Dancers: Findings from the UK Centres for Advanced Training.
Steinberg N, Aujla I, Zeev A, Redding E. Int J Sports Med. 2013 Jul 30.
The aim of the present study was to characterize the injuries of young dancers attending Centres for Advanced Training. 806 dancers, ages 10-18 years responded to surveys regarding their biological profile, dance experience and injury history, and were examined for their anthropometric profile. Of the 806 dancers, 347 reported an injury. Based on 4 age groups, the total hours of practice per week increased significantly with increasing age. Incidence of injuries per 1 000 h of dance practice for dancers ages 11-12 were found to be significantly higher compared to the incidence for dancers ages 13-18 (p<0.05). Foot and ankle and other lower extremities were the most common injury location, and muscle injuries were the most common type of injury. Total months in CAT training (OR=1.044, 95% CI=1.014-1.075) and hours per week in creative style practice (OR=1.282, 95% CI=1.068-1.539) were found to be significantly associated with injuries. In conclusion, both young and mature dancers are exposed to extensive risk of injury. The intensity of training (such as number of months and number of hours of training per week) is important factor that should be taken into account in order to decrease future injuries among young dancers.
The purpose of this study was to investigate the incidence and magnitude of clinically significant psychological symptoms among outpatient injured dancers presenting for musculoskeletal issues and to identify features of “at risk” dancer-patients who might require additional psychological support when injured. The Brief Symptom Inventory® (BSI), a highly reliable and valid screening tool for psychological distress, was administered to first- and last-visit injured dancers at an orthopedic clinic in the Netherlands from February to May 2008. In all, 153 BSI surveys were completed, including 82 among first-visit patients and 71 among end-treatment patients. Scores were examined for the influence of age, gender, dance level, style, pain, perceived level of artistic compromise, and anatomic location of injury. Dancers' scores were compared to normative values for adult non-psychiatric patient community members. Ninety-two dancers (60.1%) met requirements for clinical referral to a psychologist or psychiatrist, having scored two or more standard deviations (SD) above the norm in at least one of nine psychopathological symptoms. Across first- and last-visit groups, dancers met referral criteria for an average of four psychopathological symptoms. First-visit dancers demonstrated higher distress than the general population on 90% of BSI dimensional symptoms and last-visit dancers on 50%. On the Global Symptom Index, a summary score for overall distress and the best measure of psychological discomfort, 46.6% of dancers demonstrated “above average” distress (≥ 1 SD) compared to the general population, and 19.6% demonstrated “high” (≥ 2 SD) or “very high” (≥ 2.5 SD) distress. Compared to academy level pre-professional students, professionals showed reduction in BSI scores on somatic, cognitive, interpersonal sensitivity, anxious, hostile, phobic, and global scores following resolution of injury, particularly among those greater than 25 years of age. Students and professionals less than 25 years of age demonstrated little change in scores from the initial visit to the end of treatment. In addition, students worsened in somatization and depression domains over time, suggesting perseverative or brooding behavior and poor coping skills. Amateurs overall scored average or below average on the BSI compared to the general population at both time points. It is concluded that healthcare providers should be made aware that outpatient injured dancers presenting for musculoskeletal assessment may additionally have high levels of psychological distress, and this may warrant formal evaluation by a mental health professional.
Background Ballet dancers are both artists and athletes with extreme physical demands placed on them. Clinical experience and previous studies suggest that they are at high risk of sustaining injuries, but more high-quality prospective studies are needed.
Objective To assess the prevalence of injuries and illnesses among professional ballet dancers in the Norwegian National Ballet Company, using a newly developed injury surveillance method. Information gained may provide a foundation for future prevention interventions.
Design Prospective cohort study.
Participants A total of 57 dancers in the National ballet company agreed to participate. During the first 32 weeks of the registration there has been 5 drop-outs.
Interventions Every second week all dancers received a recently developed online questionnaire which records symptoms of illness and injury, as well as reduced participation and dancing performance due to health problems.
Main outcome measurements Prevalence of injuries and illnesses.
Results Preliminary results after 32 weeks. The average response rate was 81% (64–89%). The average injury prevalence was 64% (32–84%), and the average illness prevalence was 9% (4–20%). The prevalence of substantial injuries, defined as injuries leading to moderate or severe reductions in dance participation or performance, or total inability to dance, was 29% (18–45%). Thirty-four percent of injuries were located in the ankle, 18% in the lower leg, 12% in the knee and 11% in the foot.
Conclusions The prevalence of injury is extremely high among dancers at the Norwegian National Ballet Company, being considerably higher than among elite athletes from Olympic sports. Future efforts to prevent injuries in this group are warranted.
Press release: Young dancers at a higher risk of injury
Gruelling training loads are placing young ballet dancers at risk of serious and in some cases, career-ending injuries, with new research revealing young dancers are at a higher risk of injury relative to other adolescent athletic populations.
The study, published by Sports Medicine Australia in The Journal of Science and Medicine in Sport, found that extremely high and unvaried training loads, coupled with the impact of adolescent growth spurts, may pre-dispose young pre-professional dancers to high levels of overuse injury.
Lead author Christina Ekegren, Physiotherapist and PhD candidate, Department of Epidemiology and Preventative Medicine, Monash University said more than three-quarters of the dancers monitored sustained an injury over the period of the one year study.
“Of the injuries sustained, a number were quite severe, with 23 of the 378 injuries requiring surgery, and as many as 60 per cent requiring investigation through medical imaging,” said Ms Ekegren.
“Five of the dancers were forced to drop out of elite ballet school as a result of their injuries, while on average the time lost from dance through injury was about a month.”
Ms Ekegren said overuse was the most common cause of injury, with 72 per cent of injuries occurring as a result of overuse and likely exacerbated by high training loads without adequate recovery time.
“Previous research has confirmed that dance, and in particular, ballet, is one of the most demanding physical activities undertaken by young people,” Ms Ekegren said.
“During our surveillance, we found that the majority of the dancers monitored danced six days per week with each participant dancing an average of 30 hours per week – this was on top of their normal school work.
“There was very little variation in the type of training undertaken, with the majority of time spent in ballet classes.
“Given that injuries sustained by young dancers during their training often recur in their professional careers and are a leading cause of early retirement, if young dancers could avoid injury they could potentially extend their professional longevity.
“Injury prevention would also result in significant health-related cost savings, with dancers also avoiding the negative psychological impact and adverse effects on career development that occur through missing long periods of time from training.
“These findings highlight the need for dance teachers to carefully monitor their students’ training loads and modify them accordingly to avoid injury, while young dancers should also be educated on the importance of adequate recovery time to avoid injury re-occurrence.“
The study, Injuries in pre-professional ballet dancers: Incidence, characteristics and consequences, was one of the first to follow the recently developed International Association for Dance Medicine and Science (IADMS) injury reporting guidelines. The occurrence of injuries in 266 dancers aged 16-19 years from three elite ballet schools in London was monitored over the period of one school year.
Kinematic analysis of modern dance movement "stag jump" within the context of impact loads, injury to the locomotor system and its prevention.
Gorwa J, Dworak LB, Michnik R, Jurkojć J. Med Sci Monit. 2014 Jun 27;20:1082-1089.
Background This paper presents a case study of kinematic analysis of the modern dance movement known as the "stag jump". Detailed analysis of the kinematic structure of this movement as performed by the dancers, accompanied by measurements of impact forces during landing, will allow the authors to determine, in subsequent model-based research phases, the forces acting in knee joints of the lower landing limb.
Material and Methods Two professional modern dancers participated in the study: a male and a female. The study consisted in recording the values of ground reaction and body motion, and then determining and analyzing kinematic parameters of performed movements.
Results The results of measurement of joint angles in the landing lower limb, pelvis, and foot position in relation to the ground, as well as the level of vertical components of ground reaction, provided insight into the loading response phase of the "stag jump". The measurements and obtained results show differences between the man and woman in ground reactions and kinematic quantities.
Conclusions The results obtained during the research may be used in the development and teaching of dancing movements. Training sessions, carried out in the biomechanical laboratory, with active participation of dancing teachers, could form a basis for a prevention model of injuries and physical overloads occurring within this occupational group. Primary differences in the "stag jump" performance technique probably result from the different educational path the man and the woman went through.