This horse presented for massive swelling of his chest and left front leg lameness. He had been given Banamine IM two days before for mild signs of colic. Note the surgical incisions that were placed to allow drainage and expose the tissues to air.

Ultrasound of necrotic muscle. The gas is bright white (arrow).

This horse received IM Banamine in
the left neck, and all the surrounding
tissue died and sloughed off.

This is an example of surgical fenestrations (openings) made to drain and aerate tissues. A perforated tube was run through these incisions to allow local delivery of oxygen.

Daisy's fenestrations after six weeks of healing.

Photos courtesy Dr. Tracy Norman.