When a major injury occurs to one limb the other is called upon to carry the weight of the equine for extended times. Over time the supporting limb develops laminitis, probably because blood flow within the hoof capsule is inhibited by continuous loading. The heels of the hoof continue to grow and the differential hoof growth causes the hoof capsule to distort and laminitis develops. 

Grooving and support heart bar shoes and EquiPac soft sole support has been used in this situation with good results.