My DD is 21 months and is knee walking instead of walking. She hit her physical milestones later, sitting up at 8months, crawling at 13months, cruising at 16months. She can walk holding my finger but as soon as I let go of her hand she drops to her knees.
Am getting fed up of comments that she should be walking now. Best one so far 'she'll have knees like a housemaid' 
I know it's mental rather than a physical issue. Wondered if anyone else had a dc with similar issue?
Thanks