Revista de Medicina Desportiva (English) January 2019 | Page 30

Rev. Medicina Desportiva informa, 2019; 10(1):28-30. Biomechanics and Traumatology of Ballet Flávia De Marco Sandrin 1 , Dr. Diogo Lino Moura 2 , Prof. Doutor Fernando Fonseca 3 1 Aluna da Faculdade de Medicina da Universidade Católica de Pelotas, Rio Grande do Sul, Brasil; Estagiária no Serviço de Ortopedia do Centro Hospitalar e Universitário de Coimbra (CHUC); 2 Médico interno de Ortopedia do CHUC, Faculdade de Medicina da Universidade de Coimbra (FMUC); 3 Diretor do Serviço de Ortopedia do CHUC, FMUC. Coimbra RESUMO / ABSTRACT Ballet practice involves the repeated execution of complex and coordinated fast and delicate move- ments, mostly involving the feet and upper limbs. Therefore, it makes sense that overuse injuries by repeated stress affecting these anatomic segments are the most common ones. In this paper we discussed the sport biomechanics and the characteristics of its most common traumatic injuries. Even though limited, current epidemiological data on ballet traumatology are extremely important in order to develop strategies of injury prevention, early diagnosis and optimized treatment of the most prevalent injuries. PALAVRAS-CHAVE / KEYWORDS Ballet, sport, dance, injury, overuse, repeated movements Introduction Ballet is a kind of dance that appeared on the XV century and its evolution has conducted to differ- ent modalities and specificities. 1 Its origin is situated on the gestural theatre known as Pantomima, that was the art of narration with the body. This way, it requires of its prac- titioners complex and coordinated movements. It gained world popu- larity with the Repertoire Ballet, that is a kind of ballet that tells a story, namely the following: The Swan Lake, the Nutcracker, Coppélia, Giselle, Romeu and Julieta and Paquita. Although it is a very practiced sport, the scientific studies about trau- matic injuries associated with the practice of ballet is still very limited when comparing with other sports. 1 and large movements of medial and lateral rotation of the shoulders. It also includes jumps and high impact movements with load, that could be the own body weight or even jumps performed by a male dancer carry- ing on his arms a female dancer. It is a sport with specific vocabulary with difficult techniques to handle. It requires practice, discipline and repeated high intense training of movements in order to get them better. 2-6 The professional practi- tioners of ballet have, on average, 34 hours of weakly training and these periods become more intense during the preparation period for competition. 7 The test period for each more elaborated presentation varies, annually, from 10 to 16 weeks and total number of annual per- formances varies between 122 and 195 for the professional dancers. 7 The actual professional modalities of the ballet are variations of the basal technique, the classic ballet. The most widespread are: classic bal- let, neoclassical, contemporary and Hispanic dance. The majority of the published studies are related to the classic ballet, and this type is the target of this text. Classic ballet is a type of ballet with more complex and minute techniques. During the performances, regard- less of the sneaker used (ballerinas and mid-tip toe shoes for both sexes), the dancers exhaustively perform a movement called relevé, a key technique where the dancers change the position of the feet from a completed leaning on the floor of plantar face of the foot to a partial leaning on the floor. The athletes balance themselves and they transfer the body weight to tarsome- tatarsus, metatarsophalangeal and interphalangeal joints or even to the extremity of the distal phalanges of the toes (Figure 2). Traumatology on the ballet On ballet, like in the other sports, there are two basic types of muscu- loskeletal injuries: acute traumatic injuries and overuse injuries due to repeated movements. 8,9 The trauma- tic injuries on ballet have a multifac- torial cause and they are associated to risk factors classified as intrinsic Biomechanichs of ballet Independently the type that is per- formed, ballet is a sport based on a lot of fast and delicate movements, mainly involving the feet and the upper limbs. It has as a correct pos- ture the orthostatism with retracted scapulae, cervical spine on hyper- extension and contracted abdomen. It requires, mostly, movements of plantar hyperflexion, lateral rotation of the hip, called endehors (Figure 1) 28 january 2019 www.revdesportiva.pt Figure 1 – Typical movements of the ballet – cambreé performed by the famale dancer or en dehors performed by the couple. Figure 12 – Relevé or rising on tips, the firts with load transfered by the meta- tarsalphalangeal joints stil with plantar support and the second with the major- ity of the support on the the extremity of the distal phalange of the halux with small contribuition of the other toes.