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Diplegia

Diplegia



Overview

Diplegia is a form of paralysis or motor impairment affecting symmetrical body parts, most commonly both legs (spastic diplegia), though it can affect the arms or face. Often caused by cerebral palsy due to premature birth, it causes muscle stiffness and high tone (spasticity). While it affects mobility, it does not always impact intelligence.

Symptoms

Spasticity: Extremely tight, stiff muscles in the lower limbs, leading to limited movement.  Scissor Gait: Legs turn inward, cross at the knees, or stiffen, making walking difficult.

Toe Walking: A tendency to walk on toes due to tightened calf muscles.

Weakness in Legs: Difficulty holding up body weight. 

Delayed Motor Milestones: Delays in sitting, crawling, or walking (often walking is delayed until ages 2–4).

Muscle/Joint Issues: Permanent contractures (shortening of muscles), joint deformities, and hip displacement.

Balance/Posture Issues: Difficulty with coordination and maintaining posture.

Upper Body Impact: While primarily leg-focused, minor tightness can occur in the arms, hands, and face.

Other Potential Issues: Seizures, speech challenges, swallowing problems, and cognitive impairment (in some cases).

Causes

Premature Birth & Low Birth Weight: Infants born before 28 weeks are at highest risk, as underdeveloped brains are more susceptible to injury.

Birth Asphyxia: A lack of oxygen to the baby's brain during delivery can cause damage to the motor cortex.

Infections: Maternal infections during pregnancy, or infections in the baby after birth, can cause brain injury.

Brain Malformations/Trauma: Abnormal fetal development or injuries during delivery (e.g., hemorrhages).

Neonatal Jaundice: Severe jaundice, if left untreated, can lead to kernicterus, a form of brain damage.

Acquired Brain Injury: Sometimes, injuries or infections occurring shortly after birth can lead to the condition.

Types of DiplegiaSpastic 

Diplegia Cerebral Palsy: Mostly affects the legs, causing tightness, "scissoring" of the legs, and difficulty walking.

Facial Diplegia: Rare paralysis of both sides of the face, linked to conditions like Guillain-Barré syndrome (GBS) or, according to this article from National Institutes of Health (NIH), Bell's palsy, and viral infections.

Diplegia of the Arms: While less common than leg involvement, it can occur due to brain injuries or rare disorders

 Risk Factor

Prematurity and Low Birth Weight: The most significant risk factors; earlier birth and lower weight (especially under 3 lbs 5 oz) correlate with higher risk.

Maternal Infections & Illness: Infections such as rubella, cytomegalovirus (CMV), toxoplasmosis, or high fevers during pregnancy can cause brain damage.

Birth Complications: Incidents during delivery, including oxygen deprivation, breech presentation, or improper use of delivery tools (forceps/vacuum), can lead to neonatal brain injuries.

Multiple Births: Twins or triplets are at higher risk due to a greater likelihood of premature birth.

Neonatal Factors: Severe jaundice or kernicterus and infections that affect the newborn’s brain shortly after birth.

Maternal Health Conditions: Issues such as preeclampsia, thyroid issues, or seizures can increase risk.

Complications

Mobility Issues: Difficulty walking, crawling, or transitioning positions, often requiring braces, walkers, or wheelchairs.

Muscle Contractures: Tightness and shortening of muscles, leading to permanent stiffness in knees, hips, and calves.

Joint Deformities & Misalignment: Common issues include scoliosis (spine curvature) and hip subluxation (dislocation).

Toe walking: A "scissor-like" gait where legs cross at the knees.

Chronic Pain: Often stemming from severe muscle contractions, spasms, and joint issues.

Osteoporosis & Fractures: Reduced mobility can lead to lower bone density.

Diagnosis

Clinical Evaluation: A neurologist or pediatrician reviews medical history, focusing on pregnancy/birth complications (e.g., prematurity, premature birth, low birth weight) and motor milestones.

Physical Exam: Assessment of muscle tone, reflexes, and gait (often a "scissor-like" gait with stiff, inwards-turning legs).Brain Imaging: An MRI is the preferred tool, often identifying Periventricular Leukomalacia (PVL)—a pattern of deep white matter injury related to premature birth.

Diagnostic Tools: Cranial ultrasound for infants to detect brain damage. EEGs are used if seizures are present.

Differential Diagnosis: Ensuring the condition is not a progressive disease of the spine or brain, and differentiating from other neuromuscular disorders.

Treatment

Physical Therapy: Crucial for increasing mobility, strength, and balance, often incorporating massage and yoga.

Occupational Therapy: Focuses on developing daily living skills, especially for arm and hand function.

Medications: Used to reduce spasticity, including oral muscle relaxants (baclofen, dantrolene) and Botox injections to ease muscle stiffness.

Orthopedic Surgery: Procedures to lengthen muscles or tendons, or to correct bony deformities.

Selective Dorsal Rhizotomy (SDR): A surgical procedure that acts on the spinal nerve roots to significantly reduce spasticity in the legs.

Mobility Aids: Use of walkers, wheelchairs, and orthotic devices (e.g., Ankle-Foot Orthoses or AFOs) to aid walking and support proper alignment.

Speech Therapy: Helps manage feeding and swallowing difficulties, which can occur in some cases.

Type of Doctor Department : A pediatric neurologist or a physical medicine and rehabilitation specialist (physiatrist)

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