This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Multiple loose bodies are seen in -a) Osteochondritis dessicansb) Synovial chondromatosisc) Osteoarthritisd) Rheumatoid arthritis e) Osteogenesis imperfecta 
Select and explain. 
A. abc, B. bc, C. acd, D. bcd
A: abc
Answer: A: abc 
Explanation: Causes of loose bodies include :-


Osteoarthritis 
Osteochondritis dessicans
Osteochondral fracture (injury)           
Charcot's disease
Synovial chondromatosis


Among these, osteochondral fracture causes single loose bodies, while all other can cause multiple loose bodies, maximum by synovial chondromatosis (up to hundred’s).