photo of horses racing

Cornell Ruffian Equine Specialists

Norm Ducharme

Dr. Norm Ducharme
Cornell University
College of Veterinary Medicine
C2 528 CPC, Box 25
Ithaca, NY 14853

Quick Links:
Equine Performance Clinic
Equine Hospital
Nemo Farm Animal Hospital

Selected Publications


Zantingh AJ, Ducharme NG, Mitchell LM, Cheetham J. Effects of hypoglossal nerve block and electrical stimulation of the thyrohyoideus muscles on position of the larynx and hyoid apparatus in healthy horses. Am J Vet Res., 74(5): 784-9, 2013.

Montgomery K, Ortved K, Devries J, Hackett R, Kern T, Irby N, Ducharme N. Bilateral parotid duct transposition for keratoconjunctivitis sicca in a Connemara stallion. Vet Ophthalmol, Oct 15. doi: 10.1111/j. 1463-5224, 2012.

Cheetham J, Ducharme NG, Soderholm V, Mitchell L, Sanders I, Jarvis J, Regner AL, Priest D. Functional electrical stimulation of intrinsic laryngeal muscles under varying loads in exercising horses. PLoS One, 6(8):e24258, 2011.

Passman SN, Cheetham J, Bonassar LJ, Ducharme NG, Rawlinson JJ. Biomechanical characterization of equine laryngeal cartilage. Eq Vet J, 43(3),  2011.

Watts AE, Fortier LA, Nixon AJ, Ducharme NG. A technique for laser-facilitated equine pastern arthrodesis using parallel screws inserted in lag fashion. Vet Surg, 39(2):244-253, 2010.

Ducharme NG, Cheetham J, Sanders I, Hermanson JW, Hackett RP, Soderholm LV, Mitchell LM. Considerations of pacing of the cricoarytenoid dorsalis muscle by neuroprosthesis in horses. Eq Vet J, 42(6):534-540, 2010.

Pigott JH, Ducharme NG, Mitchell LM, Soderholm LV, Cheetham J. Incidence of swallowing during exercise in horses with dorsal displacement of the soft palate. Eq Vet J, 42(8):733-737, 2010.

Witte T, Ducharme NG, Cheetham J, Rawlinson J, Soderholm V. A transducer measuring force on surgical sutures. J Can Vet Med Assoc, 74(4): 299-301, 2010.

Witte TH, Cheetham J, Soderholm LV, Mitchell LM, Ducharme NG. Equine laryngoplasty sutures undergo increased loading during coughing and swallowing. Vet Surg, 39(8):949-956, 2010

Ortved KF, Cheetham J, Mitchell LM, Ducharme NG. Successful treatment of persistent dorsal displacement of the soft palate and evaluation of laryngohyoid position in 15 racehorses. Equine Vet J, 42(1):23-29, 2010.

Pownder S, Scrivani PV, Bezuidenhout A, Divers TJ, Ducharme NG.  Computed tomography of temporal-bone fractures and temporal region anatomy in horses. J Vet Intern Med, 24(2):398-406, 2010.

Kraus MS, Jesty SA, Gelzer A, Ducharme NG, Mohammed HO, Soderholm LV, Mitchell LM, Divers T.  Measurement of plasma equine cardiac troponin I concentration by use of a point of care analyzer in clinically normal horses with experimentally induced cardiac disease. AJVR,  71(1):55-59, 2010.

Butcher MT, Hermanson JW, Ducharme NG, Mitchell LV, Soderholm LV, Bertram JEA. Contratile behavior of the forelimb digital flexors during steady-state locomotion in horses (Equus caballus): An initial test of muscle architectural hypotheses about in vivo function. Comp Biochem Physiol A Mol Integr Physiol, 152(1):100-104, 2009.

Radcliffe RM, Ducharme NG, Divers TJ, Gleed RD. Treating thoracic injuries. Compend Equine Cont Educ for Vet, 4(5):208-223, 2009.

Cheetham J, Piggot JH, Hermanson JW, Campoy L, Soderholm LV, Thorson LM, Ducharme NG. Role of the hypoglossal nerve in equine nasopharyngeal stability. J Appl Physiol, 107(2):471-477, 2009.

Ducharme NG, Fortier LA, Kraus MS, Hobo S, Mohammed HO, McHugh MP, Hackett RP, Soderholm LV, Mitchell LM. Effect of a tart cherry juice blend on exercise-induced muscle damage in horses. Am J Vet Res, 70(6):758-763, 2009.

Witte TH, Mohammed HO, Radcliffe CH, Hackett RP, Ducharme NG.  Racing performance after combined prosthetic laryngoplasty and ipsilateral ventriculocordectomy or partial arytenoidectomy: 135 Thoroughbred racehorses competing at less than 2400m (1997-2007).  Equine Vet J, 40(1)70-75, 2009.

Chalmers HJ, Yeager AE, Ducharme NG.  Ultrasonographic assessment of laryngohyoid position in horses with and without dorsal displacement of the soft palate.  Vet Radiol Ultrasound, 50(1):91-96, 2009.

Cheetham J, Witte TH, Soderholm LV, Hermanson JW, Ducharme NG. In vitro model for testing novel implants for equine laryngoplasty. Vet Surg, 37(6):588-593, 2008.

Rakesh V, Ducharme NG, Cheetham J, Datta AK, Pease AP. Implications of different degrees of arytenoid cartilage abduction on equine upper airway characteristics. Equine Vet J, 40(7) 629-635, 2008.

Cheetham J, Pigott JH, Thorson LM, Mohammed HO, Ducharme NG.  Racing performance following the laryngeal tie-forward procedure:  A case-controlled study.  Equine Vet J, 40(5):501-507, 2008.

Rakesh V, Ducharme NG, Datta AK, Cheetham J, Pease AP.  Development of equine upper airway fluid mechanics model for thoroughbred racehorses.  Equine Vet J, 40(3) 272-279, 2008.

Cheetham J, Witte TH, Rawlinson JJ, Soderholm LV, Proudman HO, Ducharme NG. Intra-articular stabilization of the equine cricoarytenoid joint. Equine Vet J, 40(6):584-588, 2008.

Rakesh V, Datta AK, Ducharme NG, Pease AP.  Simulation of turbulent airflow using a CT based upper airway model of a racehorse.  J Biomech Eng 130(3):031011, 2008.

Morello SL, Ducharme NG, Hackett RP, Warnick LD, Mitchell LM, Soderholm LV.  Activity of selected rostral and caudal hyoid muscles in normal horses during strenuous exercise, Am J Vet Res 69(5):682-689, 2008.

Watts AE, Fortier LA, Nixon AJ, Ducharme NG.  A technique for internal fixation of scapulohumeral luxation using scapulohumeral tension sutures in three alpacas and one miniature steer.  Vet Surg 37(2):161-165, 2008.

Cheetham J, Radcliffe CR, Ducharme NG, Sanders I, Mu L, Hermanson JW.  Neuroanatomy of the equine dorsal cricoarytenoid muscle: surgical implications.  Equine Vet J 40(1):70-75, 2008.

Butcher MT, Hermanson JW, Ducharme NG, Mitchell LM, Soderholm LV, Bertram JEA. Superficial digital flexor tendon lesions in racehorses as a sequela to muscle fatigue: a preliminary study.  Equine Vet J   39(6):540-545, 2007.

Ducharme N, Tessier C. Chirurgie respiratoire chez le cheval: indications et pronostic. Pratique Vétérinaire Équine, numéro spécial 38:99-105, 2006.

Infernuso T, Watts AE, Ducharme NG. Septic epiglottic chondritis with abscessation in 2 young Thoroughbred racehorses. Can Vet J 47(10):1007-1010, 2006.

Radcliffe CH, Woodie JB, Hackett RP, Ainsworth DM, Erb HN, Mitchell LM, Soderholm LV, Ducharme NG. A comparison of laryngoplasty and a modified partial arytenoidectomy as treatments for laryngeal hemiplegia in exercising horses. Vet Surg 35:643-652, 2006.

Textor JA, Ducharme NG, Gleed RD, Hackett RP, Erb HN, Mitchell L, Soderholm LV. Effect of pericardiotomy on exercise-induced pulmonary hypertension in the horse. Equine Comp Exercise Physiol 3:45-51, 2006.

Divers TJ, Ducharme NG, de Lahunta A, Irby NL, Scrivani PV. Temporohyoid osteoarthropathy. Clin Tech in Equine Pract 5:17-23, 2006.

Chalmers HJ, Cheetham J, Yeager AE, Ducharme NG. Ultrasonography of the equine larynx. Vet Radiol Ultrasound 47:476-481, 2006.

Chalmers HJ, Cheetham J, Dykes NL, Ducharme NG. Computed tomographic diagnosis--stylohyoid fracture with abscess in a horse without temporohyoid disease. Vet Radiol Ultrasound 47:165-167, 2005.

Gardner RB, Nydam DV, Mohammed HO, Ducharme NG, Divers TJ. Serum gamma glutamyl transferase activity in horses with right or left dorsal displacements of the large colon. J Vet Intern Med 19:761-764, 2005.

Lin RC, Engeli E, Prowten AW, Erb HN, Ducharme NG, Goodrich LR. Antebrachial fractures in four captive polar bears (Ursus maritimus). Vet Surg 34:358-365, 2005.

Woodie JB, Ducharme NG, Hackett RP, Erb HN, Mitchell LM, Soderholm LV. Can an external device prevent dorsal displacement of the soft palate during strenuous exercise? Equine Vet J 37:425-429, 2005.

Woodie JB, Ducharme NG, Kanter P, Hackett RP, Erb HN. Surgical advancement of the larynx (Laryngeal tie-forward) as a treatment for dorsal displacement of the soft palate: a prospective study 2001-2004. Equine Vet J 37:418-423, 2005.

Jansson N, Ducharme NG. Angular limb deformities in foals: causes and diagnosis. Comp Continuing Ed, 27(1): 48-54, 2005.

Jansson N, Ducharme NG. Angular limb deformities in foals: treatment and prognosis. Comp Continuing Ed, 27(2): 134-146, 2005.

Abou-Madi N, Kollias GV, Hackett RP, Ducharme NG, Gleed RD, Moakler JP. Umbilical herniorrhaphy in a juvenile Asian elephant (Elephas maximus). J Zoo Wildl Med 35:221-225, 2004.

Nixon AJ, Fortier LA, Goodrich LR, Ducharme NG. Arthroscopic reattachment of osteochondritis dissecans lesions using resorbable polydioxanone pins. Equine Vet J 36:376-383, 2004.

Pease AP, van Biervliet J, Dykes NL, Divers TJ, Ducharme NG. Complication of partial stylohyoidectomy for treatment of temporohyoid osteoarthropathy and an alternative surgical technique in three cases. Equine Vet J 36:546-550, 2004.

Ducharme NG, Hackett RP, Woodie JB, Dykes N, Erb HN, Mitchell LM, Soderholm LV. Investigations into the role of the thyrohyoid muscles in the pathogenesis of dorsal displacement of the soft palate in horses. Equine Vet J 35:258-263, 2003.

Hackett RP, Ducharme NG, Gleed RD, Mitchell L, Soderholm LV, Erickson BK, Erb HN. Do Thoroughbred and Standardbred horses have similar increases in pulmonary vascular pressures during exertion? Can J Vet Res 67:291-296, 2003.

Cable CS, Ducharme NG, Hackett RP, Erb HN, Mitchell LM, Soderholm LV. Sound signature for identification and quantification of upper-airway disease in horses. Am J Vet Res 63:1707-1713, 2002.

Ducharme NG, Goodrich L, Woodie JB. Vocal cordectomy as an aid in the management of horses with laryngeal hemiparesis/hemiplegia. Clin Tech in Equine Pract 1:17-21, 2002.

Goodrich LR, Nixon AJ, Fubini SL, Ducharme NG, Fortier LA, Warnick LD, Ludders JW. Epidural morphine and detomidine decreases postoperative hindlimb lameness in horses after bilateral stifle arthroscopy. Vet Surg 31:232-239, 2002.

Semevolos SA, Ducharme NG, Hackett RP. Clinical assessment and outcome of three techniques for jejunal resection and anastomosis in horses: 59 cases (1989-2000). J Am Vet Med Assoc 220:215-218, 2002.

Selected Books and Chapters

Ducharme NG. Pharynx. In Auer JA, Stick JA (eds), Equine Surgery, 3rd edition. St. Louis, MO, Elsevier, 2005, pp 544-565.

Robertson JT, Ducharme NG. Dorsal displacement of the soft palate. Submitted August 2004, Lekeux Ed.

Ducharme NG, Robertson JT. Nasopharyngeal collapse. Submitted August 2004, Lekeux Ed.

Ducharme NG, author or co-author of several chapters. In: Fubini SL, Ducharme NG (eds), Farm Animal Surgery, St. Louis, MO, Elsevier, 2004.

Ducharme NG, author or co-author of several chapters. In Mair T, Divers T, Ducharme NG (eds): Manual of Equine Gastroenterology, W.B. Saunders, 2002.

Ducharme NG, Hackett RP. Arytenoid Chondritis. In: The 5-Minute Veterinary Consult. Lippincott Williams & Wilkins, pp 138-139, 2002.

Ducharme NG, Hackett RP. Laryngeal Hemiplegia. In: The 5-Minute Veterinary Consult. Lippincott Williams & Wilkins, pp 618-619, 2002.