Hello, What is the best way to a) prevent sand from getting into a Mauch Knee, and/or b) cleaning sand from a Mauch Knee. I don’t believe there is any water (salt or otherwise) involved. My active patient just wants to try sand volleyball this summer. Thanks in advance! Jillian Warden, LCPO Cook Children’s Orthotics and Prosthetics SecureCook Encrypted Message ———————————————————————- SecureCook Encrypted Message