Clinical Approach to Pediatric Patients with Difficulty Ambulating

Initial Assessment

The American Academy of Pediatrics recommends assessing vital signs and general appearance, noting level of interaction with the environment and general arousal, which may indicate systemic illness affecting motor function 1
Carefully measuring and plotting head circumference, weight, and length/height on appropriate growth curves (CDC or WHO) is essential, as abnormal patterns may suggest underlying conditions 1, 2
Noting any drooling, poor weight gain, or ptosis is crucial, as these may suggest facial and oral motor weaknesses 1, 2

Asking about delayed acquisition of skills is vital, as it may indicate motor function issues 2
Inquiring about involuntary movements or coordination impairments can help identify potential motor problems 2
Questioning about regression of skills is essential, as it may indicate a decline in motor function 2
Assessing strength, coordination, and endurance issues can help identify potential motor problems 2

Observing quality and quantity of movement, even in uncooperative children, is crucial for assessing motor function 1, 2
Examining cranial nerve function, including eye movements, visual response, pupillary reactivity, and facial expressions, can help identify potential motor problems 1
Assessing oromotor movement by observing palate and tongue movement is essential for evaluating motor function 1
Evaluating strength through functional observation of antigravity movements appropriate for age can help identify potential motor problems 1
Noting any use of Gower maneuver (using arms to push up from floor) can suggest proximal muscle weakness 1
Evaluating muscle bulk, joint flexibility, and presence/absence of atrophy is crucial for assessing motor function 1
Assessing postural tone through ventral suspension in younger infants and truncal positioning when sitting/standing in older infants can help identify potential motor problems 1

By 4 months, rolling from prone to supine and supporting on elbows and wrists in prone position are expected milestones 3
By 9 months, rolling from supine to prone, sitting without support, pulling to stand, coming to sit from lying, and crawling are expected milestones 3
By 12 months, standing independently and taking first independent steps are expected milestones 3
By 12-13 months, most children walk independently, with 75% walking by 14 months 3
By 18 months, all children should be walking independently 3

Absence of independent walking by 18 months is a red flag requiring immediate evaluation 3
Loss of previously attained motor skills at any age is a red flag requiring immediate evaluation 3, 4
Asymmetry in motor movements or persistent use of only one side of the body is a red flag requiring immediate evaluation 3
Gower maneuver when rising from floor is a red flag suggesting proximal muscle weakness 1
Abnormal muscle tone (hypertonia or hypotonia) is a red flag requiring immediate evaluation 1, 4
Dysmorphic facial features or other congenital anomalies are red flags requiring immediate evaluation 4
Failure to thrive or growth abnormalities are red flags requiring immediate evaluation 4

For acute onset of difficulty ambulating, evaluating for fever, elevated white blood cell count, elevated erythrocyte sedimentation rate, or elevated C-reactive protein can help identify potential infections 5
Localizing pathology based on site of pain, tenderness, presence of erythema, swelling, and positive physical maneuvers can help identify potential causes of difficulty ambulating 5
For non-focal symptoms with negative radiographs and persistent symptoms, considering bone scan or advanced imaging may be necessary 5
For hypotonia with weakness, checking creatine phosphokinase and thyroid-stimulating hormone concentrations can help screen for conditions like Duchenne muscular dystrophy 1
The American College of Medical Genetics and Genomics recommends microarray testing as the first-line chromosome study for appropriate cases 4

Referring to Early Intervention/Child Find services for any child with confirmed motor delays is recommended 4
Consulting appropriate pediatric subspecialists based on suspected etiology (neurology, orthopedics, genetics, etc.) is essential 4
For mild abnormalities without "red flags," close follow-up with a specific timeline is appropriate, but families should understand that clinical changes should prompt urgent reevaluation 4
Regression of motor skills, loss of strength, or any concerns with respiration or swallowing warrant immediate medical attention 4

Failing to correct for prematurity when assessing development can lead to inaccurate assessments 2
Overlooking subtle signs of increased tone, such as early attainment of motor milestones, asymmetric development, or development of handedness before 18 months, can lead to missed diagnoses 2
Missing the diagnosis of hypotonic cerebral palsy in children with normal brain imaging and uneventful perinatal history can occur if not carefully evaluated 4