Questions
2–4 questions per BPT/Nursing professional exam
Difficulty
Medium
Importance
High yield for BPT and Pediatric clinical exams
Overview
Cerebral Palsy (CP) is a group of permanent, non-progressive disorders affecting movement and posture due to an immature brain insult. It is a high-yield topic for BPT and medical exams, focusing on clinical classification and the identification of motor delays. Mastery of this topic requires understanding the correlation between site of lesion and motor outcome.
Classification by Neurological Involvement
Classification is primarily based on the type of muscle tone abnormality and the neuroanatomical localization of the injury. Differentiating between these types is critical for planning the appropriate physiotherapy intervention.
- Spastic: Damage to the motor cortex, presenting with hypertonia
- Athetoid/Dyskinetic: Basal ganglia involvement, characterized by involuntary movements
- Ataxic: Cerebellar involvement leading to impaired balance and coordination
- Mixed: Combination of spasticity and involuntary movements
- Monoplegia, Hemiplegia, Diplegia, and Quadriplegia based on limb distribution
Developmental Milestones and Red Flags
Early detection of CP relies on identifying significant delays in reaching motor milestones. Students must distinguish between physiological variants and pathological delays in gross motor function.
- Head control: Absence by 4 months is a red flag
- Sitting without support: Delay beyond 8-9 months
- Walking independently: Failure to walk by 18 months
- Persistence of primitive reflexes (e.g., Moro, ATNR) beyond 6 months
- Hand preference: Establishing preference before 12 months suggests hemiplegia
Clinical Assessment and Outcome Measures
Standardized assessment tools are essential to quantify the severity of CP and monitor the progression of therapy. Familiarity with the GMFCS is mandatory for clinical exams.
- GMFCS: Gross Motor Function Classification System (Levels I-V)
- MAC: Manual Ability Classification System
- Ashworth Scale: Used to quantify muscle spasticity
- GMFM: Gross Motor Function Measure for longitudinal progress
- Vojta assessment: For early diagnostic signs in infants
Exam Tip
When asked about CP, always prioritize the GMFCS classification levels as it provides the examiner with the most accurate clinical picture of the patient's functional mobility.
Common Mistakes
- Confusing the anatomical site of the lesion (e.g., Basal Ganglia vs Cerebellum) with the resulting CP type.
- Failing to mention that CP is a 'non-progressive' condition, which is a key diagnostic criterion.
- Misclassifying Diplegia as just paraplegia; Diplegia implies greater involvement of the lower limbs than upper limbs.
More Revision Notes
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