MummyNaomi DS was diagnosed quite late 5-6 months. Also have a friend whose DD was rediagnosed at six months after being given all clear after harness use earlier - as said previously intial treatment often the same really (brace) unless very severe. After about 6 months the bone gets to dense for ultrasound to show enough detail. Have had another friend referred by MCHN due to uneven creases but x-Ray showed no problems.