Can anyone help? My son has cerebral palsy and wears splints on his legs which means we need more roomy-at-the-bottom trousers, but the slim leg phenomenon seems to have affected even the regular size trousers. I used to get M&S trousers for him which were ok but they've got narrower and I can barely get the trousers over his splints. I don't want plus fit as he's not overweight, just need the extra space at the bottom. Any recommendations gratefully accepted!