Multiple choice Which of the following cartilagenous disorders causes dwarfism? Osteoarthritis Achondroplasia Costochondritis Relapsing polychondritis Reveal answer Fill a bubble to check yourself B Correct answer Explanation Achondroplasia occurs as a sporadic mutation in approximately 85% of cases (associated with advanced paternal age) or may be inherited in an autosomal dominant genetic disorder that is a common cause of dwarfism.