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1. Return to racing after surgical management of third carpal bone slab fractures in thoroughbred and standardbred racehorses

Author:
Ducharme, Norm G.,   et al.   ; Doering, Alyssa K.; Reesink, Heidi L.; Luedke, Lauren K.; Moore, Christina; Nixon, Alan J.; Fortier, Lisa A.; Ross, Michael W.; Levine, David G.; Richardson, Dean W.; Stefanovski, Darko; Ortved, Kyla F.;     Show all 12 Authors
Source:
Veterinary surgery 2019 v.48 no.4 pp. 513-523
ISSN:
0161-3499
Subject:
Standardbred; Thoroughbred; cartilage; case studies; databases; medical records; prognosis; racehorses; racing performance; radiography; surgery
Abstract:
... OBJECTIVE: To determine the prognosis for racing of horses surgically treated for slab fractures of the third carpal bone (C3). STUDY DESIGN: Retrospective case study. ANIMALS: Horses (n = 125) surgically treated for C3 slab fractures. METHODS: Medical records of horses surgically treated for dorsal or sagittal C3 fractures were reviewed for age, sex, breed, limb, fracture type, degree of cartilag ...
DOI:
10.1111/vsu.13193

2. Anatomy of the vestibulum esophagi and surgical implications during prosthetic laryngoplasty in horses

Author:
Ducharme, Norm,   et al.   ; Brandenberger, Olivier; Martens, Ann; Robert, Céline; Wiemer, Peter; Pamela, Hugo; Vlaminck, Lieven; Barankova, Katerina; Haspeslagh, Maarten; Perkins, Justin D.; Rossignol, Fabrice;     Show all 11 Authors
Source:
Veterinary surgery 2018 v.47 no.7 pp. 942-950
ISSN:
0161-3499
Subject:
cartilage; esophagus; head; horses; larynx; muscles; neck; prostheses; regression analysis; risk factors; risk reduction; surgeons; surgery; thyroid gland
Abstract:
... OBJECTIVE: To describe the anatomy of the entry to the equine esophagus (vestibulum esophagi) and to assess the risk of penetrating its adventitia and/or lumen during laryngoplasty. STUDY DESIGN: Ex vivo cadaveric study. SAMPLE POPULATION: Five isolated equine larynges and 39 equine head and neck specimens. METHODS: The anatomy of the vestibulum esophagi was studied by dissection of 5 cadaver spec ...
DOI:
10.1111/vsu.12944

3. Ultrasonographic detection of early atrophy of the intrinsic laryngeal muscles of horses

Author:
Ducharme, Norm,   et al.   ; Chalmers, Heather J.; Viel, Laurent; Caswell, Jeff L.;     Show all 4 Authors
Source:
American journal of veterinary research 2015 v.76 no.5 pp. 426-436
ISSN:
0002-9645
Subject:
horses; larynx; monitoring; muscles; muscular atrophy; nerve tissue; ultrasonography
Abstract:
... OBJECTIVE To describe the ultrasonographic changes in the cricoarytenoideus dorsalis (CAD) and cricoarytenoideus lateralis (CAL) muscles of horses before and at various times during the 32 weeks after unilateral neurectomy of the right recurrent laryngeal nerve. ANIMALS 28 healthy Standardbreds. PROCEDURES For each horse, the appearance of the CAD and CAL muscles on the right (neurectomized) and l ...
DOI:
10.2460/ajvr.76.5.426

4. Ex vivo biomechanical stability of 5 cricoid‐suture constructs for equine laryngoplasty

Author:
Ducharme, Norm,   et al.   ; Brandenberger, Olivier; Rossignol, Fabrice; Perkins, Justin D.; Lechartier, Antoine; Mespoulhès‐Rivière, Céline; Vitte, Amelie; Rossignol, Anthony; Boening, Karl Joseph;     Show all 9 Authors
Source:
Veterinary surgery 2017 v.46 no.5 pp. 705-713
ISSN:
0161-3499
Subject:
biomechanics; cartilage; horses; in vivo studies; larynx; surgery
Abstract:
... OBJECTIVE: To determine the biomechanical properties of 5 suture constructs in the equine cricoid under cyclic loading and load to failure testing. STUDY DESIGN: Ex vivo study. SAMPLES: Seventy‐five equine cadaver larynges. METHODS: Each larynx was implanted with 1 of 5 cricoid‐suture constructs. The standard laryngoplasty, where a suture is passed once through the cricoid, including its caudal ed ...
DOI:
10.1111/vsu.12671

5. Feasibility, repeatability, and safety of ultrasound-guided stimulation of the first cervical nerve at the alar foramen in horses

Author:
Ducharme, Norm,   et al.   ; Mespoulhes-Riviere, Celine; Brandenberger, Olivier; Rossignol, Fabrice; Robert, Celine; Perkins, Justin D.; Marie, Jean-Paul;     Show all 7 Authors
Source:
American journal of veterinary research 2016 v.77 no.11 pp. 1245-1251
ISSN:
0002-9645
Subject:
electrical treatment; horses; larynx; muscles; nerve tissue; peripheral nervous system diseases
Abstract:
... OBJECTIVE To develop and assess the feasibility, repeatability, and safety of an ultrasound-guided technique to stimulate the first cervical nerve (FCN) at the level of the alar foramen of the atlas of horses. ANIMALS 4 equine cadavers and 6 clinically normal Standardbreds. PROCEDURES In each cadaver, the FCN pathway was determined by dissection, and any anastomosis between the first and second ce ...
DOI:
10.2460/ajvr.77.11.1245

6. Transnasal, Endoscopically Guided Skull‐Based Surgery by Pharyngotomy for Mass Removal from the Sphenopalatine Sinus in a Horse

Author:
Ducharme, Norm G.,   et al.   ; Radcliffe, Rolfe M.; Messiaen, Yasmine; Irby, Nita L.; Divers, Thomas J.; Dewey, Curtis W.; Mitchell, Katharyn J.; Schnabel, Lauren V.; Bezuidenhout, Abraham J.; Scrivani, Peter V.;     Show all 10 Authors
Source:
Veterinary surgery 2016 v.45 no.8 pp. 1108-1117
ISSN:
0161-3499
Subject:
adults; blindness; case studies; computed tomography; cortex; cutting; geldings; histopathology; surgery; vision
Abstract:
... OBJECTIVE: To report a transnasal, endoscopically guided ventral surgical approach for accessing the cranial and caudal segments of the sphenopalatine sinus for mass removal in a horse. STUDY DESIGN: Case report. ANIMAL: Adult horse with acute onset blindness referable to a soft tissue mass within the sphenopalatine sinus. CLINICAL REPORT: A 7‐year‐old Warmblood gelding presented with a history of ...
DOI:
10.1111/vsu.12573

7. Laryngoplasty in Standing Horses

Author:
Ducharme, Norm G.,   et al.   ; Rossignol, Fabrice; Vitte, Amélie; Boening, Josef; Maher, Michael; Lechartier, Antoine; Brandenberger, Olivier; Martin‐Flores, Manuel; Lang, Hayley; Walker, Wade;     Show all 10 Authors
Source:
Veterinary surgery 2015 v.44 no.3 pp. 341-347
ISSN:
0161-3499
Subject:
anesthesia; cost effectiveness; drainage; endoscopy; horses; larynx; local anesthetics; peripheral nervous system diseases; risk; veterinarians
Abstract:
... OBJECTIVE: To describe the clinical experience with standing laryngoplasty in a series of horses mostly nonracing. STUDY DESIGN: Case series. ANIMALS: Seventy‐one client‐owned horses. METHODS: Medical records (April 2008–February 2014) of horses treated by standing laryngoplasty for abnormal respiratory noise and or poor performance were reviewed. Horses were included if they had a diagnosis of id ...
DOI:
10.1111/vsu.12307

8. Bilateral parotid duct transposition for keratoconjunctivitis sicca in a Connemara stallion

Author:
Ducharme, Norm,   et al.   ; Montgomery, Keith; Ortved, Kyla; DeVries, James; Hackett, Richard; Kern, Tom; Irby, Nita;     Show all 7 Authors
Source:
Veterinary ophthalmology 2013 v.16 no.4 pp. 303-311
ISSN:
1463-5216
Subject:
angiogenesis; computed tomography; cornea; fibrosis; fistula; guttural pouch; keratoconjunctivitis; morbidity; muscles; necrosis; saphenous vein; stallions; tears; therapeutics
Abstract:
... A 7‐year‐old Connemara stallion was presented with a 4 month history of blepharospasm, recurrent corneal ulcerations, mucopurulent ocular discharge, and keratoconjunctivitis sicca (KCS) in both eyes unresponsive to medical therapy. Ophthalmic examination revealed lackluster corneas, axial corneal scarring and pigmentation with associated neovascularization, and absolute KCS in both eyes. Computed ...
DOI:
10.1111/j.1463-5224.2012.01068.x
PubMed:
23067239

9. Effects of hypoglossal nerve block and electrical stimulation of the thyrohyoideus muscles on position of the larynx and hyoid apparatus in healthy horses

Author:
Ducharme, Norm G.,   et al.   ; Zantingh, Alanna J.; Mitchell, Lisa M.; Cheetham, Jonathan;     Show all 4 Authors
Source:
American journal of veterinary research 2013 v.74 no.5 pp. 784-789
ISSN:
0002-9645
Subject:
bones; cartilage; electrical treatment; head; horses; larynx; muscles; nerve tissue; palate; radiography
Abstract:
... Objective: To determine the effects of hypoglossal nerve block and electrical stimulation of the thyrohyoideus muscles on position of the larynx and hyoid apparatus in resting horses. Animals: 16 healthy horses that underwent hypoglossal nerve block and 5 healthy horses that underwent electrical stimulation of the thyrohyoideus muscles. Procedures: Horses underwent bilateral hypoglossal nerve bloc ...
DOI:
10.2460/ajvr.74.5.784

10. Ultrasonographic assessment of laryngohyoid position as a predictor of dorsal displacement of the soft palate in horses

Author:
DUCHARME, NORM,   et al.   ; CHALMERS, HEATHER J.; YEAGER, AMY E.;     Show all 3 Authors
Source:
Veterinary radiology & ultrasound 2009 v.50 no.1 pp. 91-96
ISSN:
1058-8183
Subject:
horses; palate; ultrasonography
Abstract:
... Dorsal displacement of the soft palate is an important cause of poor performance in racehorses, yet its etiology is not fully understood. Diagnosis requires treadmill videoendoscopy, which is not widely available. The relationship of the larynx, the hyoid apparatus, and the remainder of the skull may be important in predisposing horses to dorsal displacement of the soft palate. We hypothesized tha ...
DOI:
10.1111/j.1740-8261.2008.01497.x
PubMed:
19241762

11. Equine Laryngoplasty Sutures Undergo Increased Loading During Coughing and Swallowing

Author:
Ducharme, Norm G.,   et al.   ; Witte, Thomas H.; Cheetham, Jon; Soderholm, Leo V.; Mitchell, Lisa M.;     Show all 5 Authors
Source:
Veterinary surgery 2010 v.39 no.8 pp. 949-956
ISSN:
0161-3499
Subject:
cartilage; cough; deglutition; horses; larynx; nerve tissue; surgery; sutures
Abstract:
... Objectives: To report (1) the force required on a single laryngoplasty suture to achieve optimal abduction of the left arytenoid cartilage, (2) peak forces experienced by the suture during induced swallowing and coughing, and during 24-hour resting activity in a stall, and (3) peak forces during induced swallowing and coughing after left recurrent laryngeal nerve blockade. Study Design: Experiment ...
DOI:
10.1111/j.1532-950X.2010.00742.x
PubMed:
21044095

12. A Technique for Laser-Facilitated Equine Pastern Arthrodesis Using Parallel Screws Inserted in Lag Fashion

Author:
DUCHARME, NORM G.,   et al.   ; WATTS, ASHLEE E.; FORTIER, LISA A.; NIXON, ALAN J.;     Show all 4 Authors
Source:
Veterinary surgery 2010 v.39 no.2 pp. 244-253
ISSN:
0161-3499
Subject:
horses; horse diseases; osteoarthritis; radiography; joints (animal); laser surgery; screws; limbs (animal)
Abstract:
... To report a technique for laser-facilitated, minimally invasive proximal interphalangeal joint (PIJ) arthrodesis in horses. Case series. Horses (n=6); 5 thoracic and 2 pelvic limb PIJ. PIJ osteoarthritis (OA) diagnosis was confirmed by radiography. A diode laser was used to apply 2000 J of energy to the joint followed by insertion of 3 parallel 5.5 mm screws in lag fashion through stab incisions t ...
DOI:
10.1111/j.1532-950X.2009.00627.x
PubMed:
20210975

13. A transducer for measuring force on surgical sutures

Author:
Ducharme, Norm G.,   et al.   ; Witte, Thomas H.; Cheetham, Jonathan; Rawlinson, Jeremy J.; Soderholm, L. Vince;     Show all 5 Authors
Source:
Canadian journal of veterinary research 2010 v.74 no.4 pp. 299-304
ISSN:
0830-9000
Subject:
deformation; horses; linear models; stainless steel; sutures
Abstract:
... The objective of this study was to validate, both in vitro and in an ex vivo model, a technique for the measurement of forces exerted on surgical sutures. For this purpose, a stainless steel E-type buckle force transducer was designed and constructed. A strain gauge was mounted on the central beam of the transducer to measure transducer deformation. The transducer was tested and calibrated on a si ...

14. Arthroscopic Removal of Palmar/Plantar Osteochondral Fragments from the Proximal Interphalangeal Joint in Four Horses

Author:
DUCHARME, NORM G.,   et al.   ; RADCLIFFE, ROLFE M.; CHEETHAM, JON; BEZUIDENHOUT, ABRAHAM J.; NIXON, ALAN J.;     Show all 5 Authors
Source:
Veterinary surgery 2008 v.37 no.8 pp. 733-740
ISSN:
0161-3499
Subject:
disease diagnosis; disease course; physical activity; bone fractures; postoperative complications; lameness; surgery; joint diseases; functional status; case studies; horse diseases; joints (animal); horses; limb bones
Abstract:
... To describe anatomic considerations and arthroscopic technique in horses for arthroscopic removal of palmar/plantar osteochondral fragments from the proximal interphalangeal (PIP) joint. Retrospective study. Adult horses (n=4) with osteochondral fragments of the palmar/plantar PIP joint. Arthroscopic removal of palmar/plantar osteochondral fragments within the PIP joint was performed with horses i ...
DOI:
10.1111/j.1532-950X.2008.00440.x
PubMed:
19121168

15. A Technique for Internal Fixation of Scapulohumeral Luxation Using Scapulohumeral Tension Sutures in Three Alpacas and One Miniature Steer

Author:
DUCHARME, NORM G.,   et al.   ; WATTS, ASHLEE E.; FORTIER, LISA A.; NIXON, ALAN J.;     Show all 4 Authors
Source:
Veterinary surgery 2008 v.37 no.2 pp. 161-165
ISSN:
0161-3499
Subject:
veterinary equipment; animal injuries; disease course; scapula; humerus; physical activity; surgery; steers; alpacas; joint diseases; miniature breeds; case studies; shoulders; functional status; sutures
Abstract:
... To report a technique for open reduction and internal fixation of scapulohumeral joint luxation in large animals, and outcome. Clinical case reports. Mature alpacas (n=3) and immature miniature steer (1). Shoulder joint luxation was diagnosed by physical examination and confirmed by radiography. Open reduction was performed with internal fixation using lateral tension band sutures. Animals maintai ...
DOI:
10.1111/j.1532-950X.2007.00365.x
PubMed:
18251810

16. Measurement of plasma cardiac troponin I concentration by use of a point-of-care analyzer in clinically normal horses and horses with experimentally induced cardiac disease

Author:
Ducharme, Norm G.,   et al.   ; Kraus, Marc S.; Jesty, Sophy A.; Gelzer, Anna R.; Mohammed, Hussni O.; Mitchell, Lisa M.; Soderholm, Leo V.; Divers, Thomas J.;     Show all 8 Authors
Source:
American journal of veterinary research 2010 v.71 no.1 pp. 55-59
ISSN:
0002-9645
Subject:
horses; horse diseases; heart diseases; troponins; blood plasma; veterinary equipment; biomarkers; immunoassays; monensin; blood sampling
DOI:
10.2460/ajvr.71.1.55
PubMed:
20043781

17. Computed tomographic diagnosis--stylohyoid fracture with pharyngeal abscess in a horse without temporohyoid disease

Author:
Ducharme, Norm G.,   et al.   ; Chalmers., Heather J.; Cheetham, Jonathan; Dykes, Nathan L.;     Show all 4 Authors
Source:
Veterinary radiology & ultrasound 2006 v.47 no.2 pp. 165-167
ISSN:
1058-8183
Subject:
racehorses; head; bone fractures; pharynx; abscess; diagnostic techniques; computed tomography
DOI:
10.1111/j.1740-8261.2006.00124.x
PubMed:
16553149

18. A Comparison of Laryngoplasty and Modified Partial Arytenoidectomy as Treatments for Laryngeal Hemiplegia in Exercising Horses

Author:
DUCHARME, NORM G.,   et al.   ; RADCLIFFE, CATHERINE H.; WOODIE, J. BRETT; HACKETT, RICHARD P.; AINSWORTH, DOROTHY M.; ERB, HOLLIS N.; MITCHELL, LISA M.; SODERHOLM, L. VINCE;     Show all 8 Authors
Source:
Veterinary surgery 2006 v.35 no.7 pp. 643-652
ISSN:
0161-3499
Subject:
exercise; blood gases; surgery; paralysis; larynx; arteries; horses
Abstract:
... To compare upper airway mechanics, arterial blood gases, and tracheal contamination in horses with induced left laryngeal hemiplegia (recurrent laryngeal neuropathy [RLN]) treated by laryngoplasty/vocal cordectomy (LPVC) or modified partial arytenoidectomy (MPA). Repeated measures under the following conditions: Control, RLN, LPVC, and MPA. Six horses. Two trials were conducted under all condition ...
DOI:
10.1111/j.1532-950X.2006.00202.x
PubMed:
17026549

19. Sound signature for identification and quantification of upper airway disease in horses

Author:
Ducharme, Norm G.,   et al.   ; Cable, Christina S.; Hackett, Richard P.; Erb, Hollis N.; Mitchell, Lisa M.; Soderholm, Vincent;     Show all 6 Authors
Source:
American journal of veterinary research 2002 v.63 no.12 pp. 1707-1713
ISSN:
0002-9645
Subject:
acquired characters; cross-over studies; exercise; heart rate; horses; larynx; paralysis
Abstract:
... Objective-To investigate whether upper airway sounds of horses exercising with laryngeal hemiplegia and alar fold paralysis have distinct sound characteristics, compared with unaffected horses. Animals-6 mature horses. Procedure-Upper airway sounds were recorded in horses exercising on a high-speed treadmill at maximum heart rate (HRMAX) under 3 treatment conditions (ie, normal upper airway functi ...
DOI:
10.2460/ajvr.2002.63.1707