How blocking a horse’s nerve or joint can help locate a source of pain *H&H VIP*

When there is no obvious swelling, heat or discomfort in the leg of a lame horse, the best option to localise the pain causing the lameness is to use diagnostic analgesia — nerve and joint blocks. Blocking is also useful when a horse has multiple areas of swelling, some of which may be old, to confirm whether a particular finding on clinical examination is significant.