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Case Reports
. 2002 Sep;17(5):1092-5.
doi: 10.1002/mds.10228.

Freezing of shoulder flexion impeding boule throwing: a form of task-specific focal dystonia in petanque players

Alain Lagueny  1 , Pierre Burbaud, Jean Louis Dubos, Gwendel Le Masson, Dominique Guelh, Frederic Macia, Corinne Debras, François Tison
Affiliations
Case Reports

Freezing of shoulder flexion impeding boule throwing: a form of task-specific focal dystonia in petanque players

Alain Lagueny et al. Mov Disord. 2002 Sep.

Abstract

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.

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