The limb-girdle muscular dystrophies (LGMD) are primarily characterized by weakness in which muscle groups?

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Multiple Choice

The limb-girdle muscular dystrophies (LGMD) are primarily characterized by weakness in which muscle groups?

Explanation:
Limb-girdle muscular dystrophies mainly affect the muscles closest to the trunk—the hips and shoulders. This proximal weakness means trouble with activities like standing up from a chair, climbing stairs, and carrying heavy objects, which rely on the hip and shoulder girdles. This pattern distinguishes LGMD from conditions that start with distal muscles (in the legs or forearms) or that involve facial muscles early on. Cardiac involvement can occur in some subtypes, but it’s not the defining weakness pattern; the key feature is the proximal girdle weakness.

Limb-girdle muscular dystrophies mainly affect the muscles closest to the trunk—the hips and shoulders. This proximal weakness means trouble with activities like standing up from a chair, climbing stairs, and carrying heavy objects, which rely on the hip and shoulder girdles. This pattern distinguishes LGMD from conditions that start with distal muscles (in the legs or forearms) or that involve facial muscles early on. Cardiac involvement can occur in some subtypes, but it’s not the defining weakness pattern; the key feature is the proximal girdle weakness.

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