Spastic diplegia is a form of cerebral palsy in which both lower limbs are affected by spasticity, while the upper limbs are relatively or completely spared. It is the most common form of CP in preterm infants (periventricular leukomalacia from premature birth). Children with spastic diplegia characteristically present with a scissors gait -- the spastic hip adductors pull the knees together and the feet cross with each step. Many adults with spastic diplegia maintain some degree of community ambulation into adulthood, though the energy cost is substantially higher than for non-disabled gait.
Spastic Diplegia Gait Pattern
- Hip adductor spasticity: The inner thigh muscles are overactive, pulling the legs into adduction (knees together). Foot clearance is reduced because the crossing of one foot over the other during swing phase increases toe drag risk
- Equinus foot (plantarflexion spasticity): The calf muscles are overactive, producing toe-walking or reduced heel contact on landing
- Knee flexion contracture: Persistent crouched gait (if hamstring spasticity dominates over quadriceps)
- High energy cost: The energy expenditure of walking with spastic diplegia is 3-5 times higher than for non-disabled gait at the same speed
Walking Aid Options in Spastic Diplegia
A single cane is often insufficient for spastic diplegia because both lower limbs are affected and the bilateral symmetry of the deficit requires bilateral upper limb support:
- Two canes (bilateral): Allows symmetric load sharing and provides bilateral anterior support points that compensate for the crouched forward posture common in spastic diplegia
- Forearm crutches (bilateral): Provide more stable upper limb support than canes alone, particularly during crouched gait where the trunk is flexed forward and a cane handle height must accommodate the altered posture
- Posterior walker (reverse walker): Used in younger patients; promotes a more upright walking posture than a standard forward rollator
Can a Single Cane Help in Spastic Diplegia?
A single cane may be appropriate for mild spastic diplegia with predominantly unilateral functional limitation, or for specific high-risk environments (uneven terrain, stairs) where the person walks independently on flat ground but requires additional support situationally. For moderate to severe spastic diplegia, a single cane is insufficient.
Spastic Diplegia Severity and Walking Aid
| Severity (GMFCS) | Walking Function | Appropriate Aid |
|---|---|---|
| GMFCS I | Walks without restrictions; minor gait deviation | Cane for uneven terrain and outdoor safety only |
| GMFCS II | Walks with limitations (distance, terrain, speed) | Two canes or forearm crutches for community walking |
| GMFCS III | Walks using a hand-held mobility device | Bilateral forearm crutches or posterior walker |
| GMFCS IV-V | Self-mobility limited; uses wheelchair | Wheelchair; therapeutic standing and walking only |
Related: Walking Cane for Cerebral Palsy in Adults. Explore DaiWalk walking canes.
