Which lobe of the brain is responsible for spatial relationships?

Choice A rationale

Bone densitometry is a non-invasive test that measures bone mineral density (BMD). It helps to identify the presence of osteoporosis and assess fracture risk by comparing the patient's bone density to that of a healthy young adult. Low BMD indicates higher fracture risk. This test is essential for monitoring osteoporosis progression and guiding treatment decisions.

Choice B rationale

Arthrography involves injecting contrast dye into a joint before imaging with X-ray or MRI. It evaluates joint structures, such as cartilage, ligaments, and capsules, but it is not specifically designed to measure bone density or assess fracture risk.

Choice C rationale

A bone scan involves injecting a small amount of radioactive material into the bloodstream, which accumulates in areas of high bone activity. It detects bone abnormalities, such as fractures, infections, or tumors. However, it is not used for assessing bone density or fracture risk.

Choice D rationale

Arthroscopy is a minimally invasive surgical procedure that allows direct visualization of joint structures using a small camera. It is primarily used for diagnosing and treating joint problems, such as torn ligaments or cartilage, but it does not assess bone density or fracture risk.

Choice A rationale

Ataxic gait is characterized by uncoordinated movement, wide-based steps, and irregular distances between steps, often seen in cerebellar dysfunctions.

Choice B rationale

Dystrophic gait is associated with muscle weakness, often seen in muscular dystrophies, where there is difficulty in walking, a waddle-like walk, and frequent falls.

Choice C rationale

Steppage gait is associated with foot drop, where the individual lifts their knees higher than usual to avoid dragging their toes, often seen in peripheral neuropathies.

Choice D rationale

Helicopod gait involves the feet making a half-circle with each step and is often seen in individuals with certain neurologic disorders, such as hemiplegia or certain types of ataxia.