Standing low‐field magnetic resonance imaging as a diagnostic modality for solar keratoma in a horse

Abstract

A 22-year-old Friesian gelding was presented with a history of chronic, nonresolving lameness localised to the right front foot. Radiographs showed a smoothly marginated circular lucent area with a rim of increased opacity adjacent to the solar canal of the distal phalanx. The magnetic resonance imaging (MRI) revealed a reversed V-shaped smoothly demarcated space-occupying mass causing invagination of the solar laminae towards the solar canal arch and deformity of the adjacent surface of the distal phalanx. The mass was removed surgically and submitted for histopathology, which revealed a keratoma and periosteal fibrosis. Six weeks postsurgery the horse returned to the previous work level and 8 months follow-up showed no recurrence of keratoma. This report highlights the usefulness of MRI as a diagnostic modality for solar keratoma.

Three‐dimensional printed surgical guides for keratoma removal in horses using computed tomography or magnetic resonance imaging‐based segmentation

“…Other reported approaches include the use of a trephine, 11 Forstner drill bit, 12 or cast saw 1 . These techniques require the placement of markers or contrast on the hoof, and rerunning the radiographs, CT, or MRI to determine relationship of marker placement to keratoma.…”

“…Thus, in this case series, a median of 2 months was required to return to work. Other reported time frames include 3.6 months, 2 7 months, 3 and 8 months 11 . The general consensus among all these techniques is that partial hoof wall resections are superior to complete hoof wall resections and that advanced imaging (CT or MRI) is preferred to the use of radiographs 2,11,13 .…”

“…Other reported time frames include 3.6 months, 2 7 months, 3 and 8 months 11 . The general consensus among all these techniques is that partial hoof wall resections are superior to complete hoof wall resections and that advanced imaging (CT or MRI) is preferred to the use of radiographs 2,11,13 . One study suggested that postoperative complications were decreased by creating smaller hoof wall defects, 2 therefore our approach is optimized to achieve this conclusion.…”

Decision making with keratomas: How advanced imaging can advance your cause

“…Interestingly though in both case reports detailing solar keratomas, the horses returned to their previous level of work within 4–6 weeks after surgery (Miller and Katzwinkel ; Mageed et al . ).…”

“…In the paper this commentary accompanies, Mageed et al . () diagnose a solar keratoma using standing low‐field magnetic resonance imaging (MRI). The use of advanced imaging to augment the diagnosis of a foot‐related condition such as a keratoma is well‐documented but in previously published case series the keratomas described have been related to ones affecting the hoof wall as opposed to the sole (Getman et al .…”