Katy Bowman says "Medical massage is the same as “Pregnancy Massage,” they are words that describe a target clientele for that particular therapist.  And yet, no one ever gets upset over the use of the phrase ‘pregnancy massage.’"
"Injury treatment work, like medical massage, is highly customized to that client on that day.  It begins with assessment and palpation and leads to a treatment plan.  The work is focused on treating the ‘why’ of the condition and that changes as the client progresses through treatment.
Medical massage is injury treatment massage and then some
Perhaps I’m taking this too far, but, if you are advertising yourself as medical massage, you had better be trained in working in a hospital or medical environment.  I did an internship in hospital massage, and there is specialized information.  You have to be able to massage someone who is in a hospital bed and unable to change positions.  Can you massage the back of someone who is supine?  You have to understand how to work around IV’s, ports, shunts, catheters, bandages, and a host of medical devices.  You’ll learn to work through gloves, clothes, and blankets.
You need to have an extensive knowledge of common drugs and their contraindications.  You need to have an extensive knowledge of common diseases and their contraindications.  Did you know that you cannot use any oil or lotion on a client who is undergoing radiation treatment?  Do you know why?
Medical massage therapists are going to attract clients who have other medical issues and diseases.  MS, stroke, heart disease, diabetes, osteoporosis, joint replacements, heart valve replacement, chemo and radiation therapy, -ostomy bags, amputations, broken bones, recent surgeries, and more.  Most massage training touches on some of these conditions, but you do not get the depth of training or hands on time to truly be prepared for this clientele." 
Read her whole blog post here.