Short Stature and Advanced Bone Age, with or Without Early-Onset Osteoarthritis and/or Osteochondritis Dissecans, also known as osteochondritis dissecans, short stature, and early-onset osteoarthritis, is related to familial osteochondritis dissecans and osteogenesis imperfecta, type i, and has symptoms including waddling gait, knee pain and elbow pain. An important gene associated with Short Stature and Advanced Bone Age, with or Without Early-Onset Osteoarthritis and/or Osteochondritis Dissecans is ACAN (Aggrecan). Affiliated tissues include bone, and related phenotypes are developmental stagnation and brachydactyly