My daughter started getting very intense spasm or cramp behind her knee some months ago when she is sitting with her leg bent (I think). They seem to be getting more frequent.
It happened last week when she was sitting on the floor and again tonight when sitting. She is in lots of pain and tears and can't straighten her leg saying it's locked. I don't know if it's locked knee though as she says it's underneath not on top.
I have massaged it and slowly tried to straighten it but she's in so much pain when it lasts.
I've tried to ring GP but they said she needs to see the MSK for an appointment at their clinic and have to ring back next week.
Any ideas and what can i do in the meantime?