11 November 2023
: Case report 
Two Cases of Degenerative Cervical Spondylotic Myelopathy in Adults with Athetoid and Dystonic Cerebral Palsy
Rare disease
Hayato Kinoshita1ABE*, Michio Hongo1CDG, Yuji Kasukawa1BDF, Daisuke Kudo1CEG, Ryota Kimura
1BD, Naohisa Miyakoshi 1E
DOI: 10.12659/AJCR.941158
Am J Case Rep 2023; 24:e941158
Table 1. Classification of athetosis intensity.Mihara’s classification of athetosis intensity. The classification is a 5-point scale from grade 1 to grade 5. The higher the number, the stronger the athetosis intensity.
| Grade | Involuntary head and neck movement strength |
|---|---|
| 1 | Mild involuntary movements of the head and neck with speech or mental tension |
| 2 | Frequent involuntary contractions of the cervical muscles, clearly observable from the body surface |
| 3 | Head and neck movement with asymmetrical movement and deviation of the scapula and trunk |
| 4 | Involuntary movements so strong that the examiner cannot manually immobilize the head and neck |
| 5 | In addition to the strength, the acceleration is so great that the entire range of motion of the neck moves at once |