Neuromuscular Disorders Flashcards
Symptoms of neuromuscular disorders?
progressive weakness, muscle atrophy, contracture, deformity, and progressive disability
Goals of PT in neuromuscular disorders:
prevent deformity prolong functional capacity improve pulmonary function facilitate development and assistance of family support control pain
When is the onset of Duchenne, DMD?
1-4 years
rapid progression
When is the loss of walking in Duchenne DMD?
9-10 years
death in late teens
Average IQ in Duchenne?
average IQ 85, 30% of boys have IQ<70 related to loss of dystrophin in brain.
Onset of Becker, BMD?
onset 5-10 years
slowly progressive
Function in Becker, BMD?
walking maintained past early teens, survival into 30’s
Congenital MD:
birth, variable progression, shortened life span
Congenital myotonic MD:
birth, slow progressions, significant intellectual impairment
What lab tests are evaluated with diagnosis of MD?
high serum creatine kinase, CK level
Primary impairments in MD:
insidious muscle weakness secondary to progressive loss of myofibrils
Secondary impairments in MD:
contractures and postural malalignment in sitting and standing, scoliosis, decreased respiratory capacity, easily fatigued, occasional obesity; increasing caregiver assistance for ADL
Clinical Presentation
Children with MD
Symptom onset 2-5 yrs., diagnosed 5 yrs.
Early proximal muscle weakness
Posture of children presenting with MD:
Increased lordotic posture with mild scapular winging to keep COM behind hip joint for standing stability.
Scoliosis typically develops just before or during adolescence
Pseudohypertrophy
enlarged posterior calf due to infiltration of fatty and connective tissue
Gait of children presenting with MD:
broad BOS, waddling
delayed until 18 months- 50% of children
PT in early symptom management:
Baseline strength, ROM data, monitor progression of muscle weakness.
Family support and education.
Address activity level, peer interactions, prognosis, coping support (family-centered care).
Where is muscle weakness in early staged in MD?
progressive, proximal muscles weaker early, progress faster
Where do contractures usually develop in MD?
in plantar flexion and inversion of the foot, the hip and knee flexion contractures worsening with w/c use
Where are early limitation in ROM in early stages of MD?
hamstrings, hip flexors, ITBs, and heel cords; contractures of hips and knees with increased time sitting
Gowers sign
use of arms to push on thighs to attain standing from floor
Symptoms in early school age period in MD:
initial evidence of disability, functional activities slower.
clumsiness, falling, inability to keep up with peers
Gait in early school age period in MD:
mildly atypical gait, increased lateral trunk sway (waddling) that increases with running attempts
increase size of gastrocnemius muscles, ‘pseudohypertrophy’.