thanks for taking time to join this ASK forum.
For tendon, or ligament, one injection is enough.
For arthrosis for example yearly repeated administration could be necessary if your goal is to protect your horse's cartilage capital.
For bone cysts, one injection is enough.
Does this answers your question correctly ?
You can check our website www.vetbiobank.com*
Have a nice day
Stéphane from Vetbiobank Equine Team