When you say that you can't bend it more than 30 degrees (I assume from straight), is that because of pain, swelling, or some sort of restriction within the knee? I've torn my medial ligament a couple of times, and it's not restricted bending it, aside from the pain caused by swelling. The times where it's felt like it's been restricted from within the knee have been caused by the medial meniscus (attached to the medial ligament, so often damaged together) moving and giving a catching sensation.
If it's an option, and your fracture clinic is 10 days away, it might be worth seeing a physio - they may be able to give you mobilisation and rehab exercises you can do to help keep your leg strong until you are healed (or at least until you have a formal diagnosis and treatment plan from the fracture clinic..