Postural deformities in upper motor neuron syndromes may include which of the following?

Postural deformities in upper motor neuron syndromes may include which of the following?

• A. Peripheral nerve palsy
• B. Varicose veins
• C. Scoliosis and windswept hip deformity
• D. Tendon rupture

Answer: (C)

Chronic uneven muscle tone from upper motor neuron involvement leads to persistent postural changes around the trunk and hips. Spasticity and imbalanced forces on the spine and pelvis cause the spine to curve (scoliosis) and the pelvis to tilt, producing compensatory positions. When one side of the pelvis and hip is pulled into adduction and internal rotation while the other side goes toward abduction and external rotation, the legs assume opposite directions—a windswept appearance. These deformities are classic in long-standing UMN conditions like cerebral palsy and reflect the lasting effects of abnormal hypertonicity and contractures on alignment. Other options don’t fit this pattern because peripheral nerve palsy is a lower motor neuron issue that causes focal weakness without the chronic, asymmetric spastic postural changes seen in UMN syndromes; varicose veins are vascular issues; tendon rupture is an acute injury and does not produce the characteristic progressive scoliosis or windswept hip deformity.

Chronic uneven muscle tone from upper motor neuron involvement leads to persistent postural changes around the trunk and hips. Spasticity and imbalanced forces on the spine and pelvis cause the spine to curve (scoliosis) and the pelvis to tilt, producing compensatory positions. When one side of the pelvis and hip is pulled into adduction and internal rotation while the other side goes toward abduction and external rotation, the legs assume opposite directions—a windswept appearance. These deformities are classic in long-standing UMN conditions like cerebral palsy and reflect the lasting effects of abnormal hypertonicity and contractures on alignment.

Other options don’t fit this pattern because peripheral nerve palsy is a lower motor neuron issue that causes focal weakness without the chronic, asymmetric spastic postural changes seen in UMN syndromes; varicose veins are vascular issues; tendon rupture is an acute injury and does not produce the characteristic progressive scoliosis or windswept hip deformity.