This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatric Ohopedics, Subject name: Orthopaedics
All are true about Duchene Muscular Dystrophy Except:- 
Select and explain. 
A. Swollen Calf is present, B. Patient uses his own body to climb up., C. Distal muscle weakness is seen, D. Cardiomyopathy and congestive hea failure are seen
C: Distal muscle weakness is seen
Answer: C: Distal muscle weakness is seen 
Explanation: Explanation Proximal muscle weakness is seen Defect in Dystrophin gene (Largest gene in human) Swollen calf - Pseudohyperophy of calf (Fibrous fatty deposit) Gower's sign: -Patient uses his own body to climb up as there is proximal muscle weakness. X-linked recessive (Xp 21) Average life span is 26 years Boys- more common Definitive diagnosis is by muscle biopsy and genetic studies.