There is a long history of people using KAATSU to recover faster from injuries. The first is Dr. Sato (the inventor of KAATSU) himself when he broke his ankle and damaged knee ligaments at the age of 25 in a skiing accident. His father (also a physician) told him it would take six months to heal. Everyone (except Dr. Sato) was amazed when he recovered in 6 weeks.
Make sure you talk to your physician or rehabilitation specialist about KAATSU before incorporating it into your recovery program. While KAATSU is generally safe, the nature of your injuries and your own physical state are important factors to consider before deciding to incorporate KAATSU into your recovery and rehabilitation.
I started my KAATSU journey as a result of re-injuring my left Achilles tendon during martial arts training. The chiropractor I was working with suggested KAATSU would be a good adjunct to the other treatments I was receiving (BioFlex Laser and Shockwave). I have been using KAATSU since, both to help me recover from that injury and to continue to work on my strength and conditioning to help me prevent further injuries.
I hope this answers the question of whether you can use KAATSU when injured. If you would like more clarification, please read through the other FAQs about KAATSU, or leave a question in the comment box below.