Validation of the Zigzag Tracking Task Test for the Evaluation of Handwriting Difficulties in Writer's Cramp

NCT ID: NCT02882295

Last Updated: 2022-04-14

Basic Information

• Recruitment Status: TERMINATED
• Total Enrollment: 23 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2016-07-05
• Study Completion Date: 2017-11-15

Brief Summary

Writer's cramp (WC) is a task specific dystonia that occurs from the moment patient starts writing. It leads to partial or complete inability to use the hand only during the handwriting gesture. It is characterized by the appearance of cramps or spasms of certain muscles of the hand and/or forearm.

Clinical scales currently use for the assessment of WC fail to accurately reflect changes in the characteristics of handwriting in response to treatments (Botulinum Neurotoxin injections and / or retraining therapy).

The Zigzag Tracking Task (ZZTT), easy to use in current practice provides useful information in terms of speed and precision of handwriting gesture. This timed handwriting test is to follow with a pen a zigzag path beset with obstacles to avoid. It permits to evaluate the time in seconds required to carry out the zigzag path and count the number of errors (output path and contacts with obstacles). The investigators propose to validate the ZZTT for the assessment of the handwriting gesture of WC.

Conditions

Dystonic Disorder

Study Design

• Observational Model Type: OTHER
• Study Time Perspective: CROSS_SECTIONAL

Study Groups

writer's cramp

patients assessed without, then with Botulinum Neurotoxin injections

Validation of a handwriting scale

Intervention Type: OTHER

control

age and gender matched

Validation of a handwriting scale

Intervention Type: OTHER

Interventions

Validation of a handwriting scale

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• scholarship in French language, at least until 16 years old
• writer's cramp (diagnostic confirmed by a neurologist specialized in movement disorders)
• prescription of botulinum neurotoxin injection
• prescription de novo or absence of injection in the last 3 months
• informed consent
• medical insurance coverage

Exclusion Criteria

• writing tremor
• -other neurological disease with effect on handwriting
• pain or traumatism of the upper limb, with effect on handwriting
• non-corrected visual disturbances
• patient living outside the region where the study will be held (Ile-de-France)
• participation in another research with a potential impact on evaluation criteria
• pregnant or breast feeding patient
• patient under judiciary protection

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Fondation Ophtalmologique Adolphe de Rothschild

NETWORK

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Jean-Pierre BLETON, PhD

Role: STUDY_DIRECTOR

Fondation OPH A de Rothschild

Sophie SANGLA, MD

Role: PRINCIPAL_INVESTIGATOR

Fondation OPH A de Rothschild

Locations

Fondation Ophtalmique Adolphe de Rothschild

Paris, , France

Countries

France

Other Identifiers

SSA_2016_10

Identifier Type: -

Identifier Source: org_study_id