A 4-year-old is unable to sit cross-legged and rise without using the hands; the pediatric nurse practitioner is concerned that the child may have a:

A 4-year-old is unable to sit cross-legged and rise without using the hands; the pediatric nurse practitioner is concerned that the child may have a:

• A. Developmental problem
• B. Neurologic deficit
• C. Neuromuscular disorder
• D. Cognitive deficit

Answer: (C)

Proximal muscle strength and trunk control are needed to perform tasks like sitting cross-legged and rising from the floor. When a child cannot do these without using the hands, it points to weakness of the muscles closest to the body—the hips, thighs, and core—rather than to a purely cognitive issue or a broad developmental delay. This pattern of proximal weakness is characteristic of neuromuscular disorders, such as muscular dystrophy, where the child may use the hands to push up from the floor (a Gowers-like maneuver) and struggle with activities that require hip and trunk stability. While developmental or cognitive concerns affect different domains, the specific inability to assume or transition into a basic gross-motor position from the floor most strongly suggests a neuromuscular weakness rather than a purely neurologic deficit or cognitive impairment.

Proximal muscle strength and trunk control are needed to perform tasks like sitting cross-legged and rising from the floor. When a child cannot do these without using the hands, it points to weakness of the muscles closest to the body—the hips, thighs, and core—rather than to a purely cognitive issue or a broad developmental delay. This pattern of proximal weakness is characteristic of neuromuscular disorders, such as muscular dystrophy, where the child may use the hands to push up from the floor (a Gowers-like maneuver) and struggle with activities that require hip and trunk stability. While developmental or cognitive concerns affect different domains, the specific inability to assume or transition into a basic gross-motor position from the floor most strongly suggests a neuromuscular weakness rather than a purely neurologic deficit or cognitive impairment.