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This profile was last updated on 1/21/15  and contains information from public web pages and contributions from the ZoomInfo community.

Dr. Lisa A. Fortier

Wrong Dr. Lisa A. Fortier?

Professor of Surgery and An Equin...

Cornell University
159 Sapsucker Woods Road
Ithaca , New York 14850
United States

Company Description: Founded in 1865, Cornell is a leading private institution of higher learning located in Ithaca, New York. Approximately 20,000 students from 120 countries enroll in...   more

Employment History

Board Memberships and Affiliations


  • DVM
  • PhD
  • DVM Alberto Gobbi
  • MD
121 Total References
Web References
During the hour, Lisa ..., 21 Jan 2015 [cached]
During the hour, Lisa Fortier, DVM, PhD, Dipl. ACVS, professor of Large Animal Surgery at Cornell University's College of Veterinary Medicine, in Ithaca, New York, shared her picks for the top surgery- and lameness-related studies.
Fortier began by describing a "landmark paper" in which the authors evaluated the outcome of horses with meniscal, cartilage, or ligamentous stifle lesions treated with a combination of surgery and intra-articular (in the joint) mesenchymal stem cells (MSCs) and hyaluronic acid injections. She said that 44% of all study horses returned to work following treatment; of those, 75% of horses with meniscus disease returned to work (compared to 60% of control horses). She noted that there was no significant difference between the number of treated and control horses with cartilage or ligament damage that returned to work. She cautioned that 9% of study horses experienced joint flare (inflammation) following treatment, but said it's difficult to tell whether the MSCs or HA caused the flare.
"Maybe some of these supplements work, maybe others don't," Fortier said.
Next, Fortier described two studies evaluating blocks for the deep branch of the lateral plantar nerve, a procedure often used to diagnose hind limb suspensory desmitis. The study authors evaluated approaches to block the nerve, volume of analgesic injected, and how much the analgesic diffused once it was inside the horse's leg.
The studies showed that there's a high degree of variability when it comes to these nerve blocks, Fortier said.
Next, Fortier described a paper in which researchers retrospectively evaluated CT findings in horses with tarsal (hock) lameness.
"Some horses (in the study) had inconclusive ultrasounds or radiographs, others were to further assess fractures, and some has issues identified on another modality," she explained. "This study was further investigation to extent of pathology."
The team found a variety of pathology within the hock, Fortier said, some of which wasn't visible on other imaging modalities. Thus, she encouraged practitioners to seek further diagnostic information via a 3-D modality (like CT or MRI) if radiographs and/or ultrasound appear clean in a horse exhibiting hock lameness.
Changing gears, Fortier turned her attention to a study in which researchers evaluated whether abnormal breathing patterns at the canter and gallop are associated with respiratory tract disease.
The team retrospectively studied 365 horses that had been referred for evaluation due to poor performance or an upper respiratory tract obstruction.
Fortier explained that when most horses gallop, they take one break for every stride; however, researchers observed that a 2:1 breathing pattern-when a horse takes one breath over two strides-was the most common abnormal breathing pattern.
Moving forward, Fortier described a group of studies evaluating the impact of horses' head and neck positions while working.
First, she touched on a study in which researchers determined that three of four head and neck positions (including hyperflexion, or rollkür) resulted in a decreased pharyngeal diameter; the only one that did not was natural, unrestricted head carriage. This indicated that all non-natural head and neck positions decrease pharyngeal diameter, Fortier said.
She also noted that, as AAEP veterinarians, it's important to advocate for function rather than form and to get involved with regulatory bodies involved in equitation events.
The next study she described showed that while there's been some improvement in eliminating hyperflexion from upper level dressage, it's not enough: "These findings support the hypothesis that, in recent years, (Fédération Equestre Internationale) dressage judges have not penalized horses for a head position behind the vertical," the study authors wrote.
Fortier then described a study in which researcher soughts to determine if artificial head and neck positions led to an increase in conflict behavior and/or stress. The team used the following five head and neck positions: unrestrained (HNP1); neck raised, bridge of nose around the vertical (HNP2); neck lowered and considerably flexed, bridge of nose pointing toward the chest (hyperflexion, HNP4); neck raised and extended, bridge of nose in front of the vertical (HNP5); and neck lowered and flexed, bridge of nose pointing toward the knee (HNP7).
The researchers found that HNP2 caused increases in all stress parameters and conflict behavior and that those parameters stayed elevated for 30 minutes following exercise. Fortier said HNP4 was a "close second," followed by HNP7; HNP1 was the most favorable position.
"We need to address the effects of head and neck position on stress and the welfare of the horse," she said.
Fortier stayed on the respiratory tract for the next study, focusing on bilateral dynamic laryngeal collapse (DLC). She explained that veterinarians still don't know what causes the condition or if it's neuromuscular in origin, similar to laryngeal hemiplegia (roaring).
But the researchers determined, after taking and analyzing several types of muscle biopsies from affected horses and controls, that horses with DLC had no differences in their biopsies compared to control horses. Fortier said this showed that DLC is not neuromuscular in origin, "but we're still not sure what causes it and encourage all to stay vigilant for observational causes."
Next, Fortier described two studies in which researchers evaluated new techniques for surgically treating overriding dorsal spinous processes, more commonly known as kissing spines, that did not respond to conservative management.
One of the papers described a technique in which the surgeon removed an overriding part of the spinous process with the horse in lateral recumbency (laying on his side). Nearly 80% of horses from this study were sound at one year post-surgery, she said, and the procedure had an excellent cosmetic outcome. The researchers also determined that 44% of affected horses were "hot" on a bone scan along their spine, indicating nuclear scintigraphy could serve as an alternative diagnostic modality to radiographs.
The researchers behind the second study described performing the same procedure, but in a standing, sedated horse. In this case 80% of the horses included in the study were sound one year following surgery, Fortier said.
She stressed the importance of getting a complete diagnosis if you suspect kissing spines. She also noted that 37% of "unaffected" horses have radiographic evidence of kissing spines without displaying outward clinical signs.
Fortier changed gears and shared a study in which researchers evaluated how the type of deep digital flexor tendon lesion (DDFT) located in a foot lesion, as diagnosed via MRI, affects the outcome of a neurectomy (surgically cutting the nerves leading to the foot).
The team found that 92% of horses were sound following surgery, and 80% returned to athletic function for at least 20 months. She cautioned that horses with core and linear DDFT lesions did not have as favorable an outcome as those with dorsal border lesions of the DDFT or other foot lesions.
Additionally, six horses underwent follow-up MRI, Fortier said.
Fortier concluded her Kester career with a look at dentistry. She described a study in which researchers evaluated how much heat is transferred into horses' cheek teeth pulp cavities when veterinarians use a motorized implement during floating. Her key take-homes from this study:
Lisa Fortier, DVM, PhD, ..., 6 Mar 2014 [cached]
Lisa Fortier, DVM, PhD, Dipl. ACVS, of Ithaca, N.Y. Fortier is a professor of surgery and an equine surgeon at Cornell University, where her research program investigates the clinical application of stem cells and biologics for cartilage repair and tendonitis.
Lisa A. Fortier, DVM, PhD, ..., 4 Oct 2012 [cached]
Lisa A. Fortier, DVM, PhD, Dipl. ACVS Lisa A. Fortier, DVM, PhD, Dipl. ACVS, is an associate professor of Large Animal Surgery at Cornell, University's College of Veterinary Medicine in Ithaca, N.Y., where her research interests include arthritis, stem cells, and tendonitis.
International Cartilage Repair Society - ICRS, 14 Feb 2013 [cached]
Co-chaired by Ken Zaslav (ICRS Treasurer) and Lisa Fortier (ICRS Past President), the meeting brought together 12 members of the ICRS, 15 representatives from the FDA and 20 Industry participants from around the world.
Lisa Fortier, DVM, PhD ICRS Past-President 2009-2010
Moderator: Lisa Fortier, Cornell University, Ithaca, New York, USA
Moderator: Lisa Fortier, Cornell University, Ithaca, New York, USA
Lisa ... [cached]
Lisa Fortier
Lisa Fortier
Picture of Lisa Fortier
Lisa Fortier is an Associate Professor of Surgery at Cornell University in Ithaca, NY. She received her DVM from Colorado State University and completed her PhD and surgical residency training at Cornell University. She is boarded with the American College of Veterinary Surgeons and is an active equine orthopaedic surgeon at Cornell.
Lisa is the Vice President of the International Veterinary Regenerative Medicine Society and the immediate Past President of the International Cartilage Repair Society.
Lisa Fortier
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