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Freezing of shoulder flexion impeding boule throwing: A form of task‐specific focal dystonia in petanque players
Author(s) -
Lagueny Alain,
Burbaud Pierre,
Dubos Jean Louis,
le Masson Gwendel,
Guelh Dominique,
Macia Frederic,
Debras Corinne,
Tison François
Publication year - 2002
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.10228
Subject(s) - throwing , dystonia , physical medicine and rehabilitation , focal dystonia , task (project management) , apraxia , psychology , upper limb , motor disorder , medicine , physical therapy , neuroscience , physics , management , disease , classical mechanics , pathology , aphasia , economics
During a period of intensive practice, 2 petanque players developed freezing of shoulder flexion impeding boule throwing. This movement disorder was consistent with the diagnosis of task‐specific focal dystonia. Polymyography showed that freezing was associated with bursts of low amplitude. In the absence of motor or sensory deficits, a motor apraxia could be considered. © 2002 Movement Disorder Society