High-Yield Pathological Gaits (Neuro-Musculoskeletal Focus)
Analyzing a patient’s gait is an essential clinical component for distinguishing between upper motor neuron (UMN) lesions, lower motor neuron (LMN) lesions, cerebellar deficits, and focal muscular weaknesses.
Key Pathological Gaits & Characteristics
| Gait Type | Clinical Features & Presentation | Common Localizing Etiology |
|---|---|---|
| Hemiparetic Gait | The affected leg is held stiffly and extended; the foot is dragged and swung in a lateral arc (circumduction) due to adductor spasticity. The arm is typically held flexed and adducted. | Unilateral UMN lesion (e.g., **Stroke**, cortical injury). |
| Festinating / Parkinsonian | Stooped posture with a rigid, **shuffling** short-stepped pattern. Triggers involuntary acceleration (festination) to keep up with the forward-shifted center of gravity. Manifests diminished arm swing and difficulty initiating movement. | Basal ganglia pathology (**Parkinson’s disease**). |
| High-Steppage / Slapping | The knee is lifted abnormally high to prevent the drooping toes from scraping the floor, followed by a heavy foot slap upon contact due to loss of eccentric dorsiflexion control. | **Foot Drop** (Common Peroneal/Fibula nerve palsy or L5 radiculopathy) or severe **Sensory Ataxia** (Tabes Dorsalis, Vitamin B12 deficiency). |
| Trendelenburg / Waddling | The contralateral pelvis drops downward when standing on the affected leg. Bilateral involvement produces a distinct side-to-side duck-like waddling gait. | Gluteus medius/minimus muscle weakness (**Superior Gluteal Nerve** injury or progressive muscular dystrophies). |
| Cerebellar Ataxic | Characterized by an unstable, **wide-based stance** with irregular, uncoordinated steps and pronounced lateral swaying. Patient appears intoxicated. | Cerebellar vermis lesions, chronic alcohol abuse, or neurodegenerative disorders. |
NEET PG “Must-Know” Clinical Pearls
- Scissors Gait: Caused by severe bilateral adductor spasticity. The legs cross over each other like scissors during advancement. Classically seen in **Cerebral Palsy** (spastic diplegia).
- Magnetic Gait (Apraxia of Gait): The feet appear glued or magnetically bound to the floor, presenting marked difficulty lifting them during initiation. This is a classic diagnostic component of **Normal Pressure Hydrocephalus (NPH)**, which presents with the triad of dementia, gait apraxia, and urinary incontinence (“wet, wacky, and wobbly”).
- Sensory vs. Cerebellar Ataxia Differentiation: Sensory ataxic gaits worsen significantly or collapse completely when visual tracking is eliminated (marked by a **positive Romberg test**). Cerebellar ataxic gaits remain wide-based and uncoordinated regardless of whether the eyes are open or closed.