DM2, Broken Metatarsal, Bone Healing, Still Edematous

Anyone see many foot fractures in diabetics? We have a patient
who, despite adequate bone healing, continues to have swelling
at the 10-week post-trauma point. We are getting concerned
that nerves and microvascular circulation might be compromised
and that referral to ?? should be made. We do not want amputation, of course.