Large Animal Surgery Exam I Flashcards
Best tool for diagnosis tendonitis
Ultrasound
Use 7.5-12mHz linear transducer
Consists of Curasalt/20% hypertonic saline on kerlix. Used for exudative or necrotic wounds. Change every 24-48 hours and switch dressing when necrotic tissue/infection resolves
Hypertonic saline dressing
Nerve block for low 4 point block. Blocks between MCIII and MC II above the fetlock and between Suspensory ligament DDF tendons. Needle placed in two spots.
Lat/Med palmar nerves- between SL and DDF. DF tendon sheath across back of fetlock is goal. Being blocked by proximal and palmar needles.
Lat/Med palmar metacarpal nerves- blocks distal to button of splint (Distal and Dorsal)
Minimum stall rest for fracture thats fasted
12 weeks
If less than 1/3rd of eyelid margin is missing close using
Direct apposition
Phase of wound healing with hemostasis and fibrin deposition, then inflammation with activated platelets and other white blood cells
Inflammation/Lag Phase
Healing with granulation tissue, would contracture and epithelialization
Second intention healing
Increases support in the heel and leg. Used to help hold heel together and stop excessive movement.
Bar shoe
Plain emasculator
Used for radial and tibial fracture stabilization, and gastroc rupture in farm animals. Large ring placed around axilla or groin and two rods extend down. Rods attach to metal foot plate and limb is in cast. Maintains limb in extension
Thomas schroeder splint
Type of skin graft that is completely separated form blood supply.
Free graft (Island grafts, sheet graft)
In the horse an inguinal cryptochid is most common on the ____ side
Right
Olecranon fracture stabilization consists of
Stack bandage with palmar splint, extend from heels to top of elbow
How long is a flexion test held for on a forelimb and hindlimb?
30 sec
When placing bandage place ____ layer without tension and always
Primary, always push flexor tendons medially (right limb-clockwise, left limb- counterclockwise)
Modality of choice for imaging bone. Used with radiographs
CT
This shit?
Fibrotic myopathy
Blocked below carpus in the groove betweent the suspensory and DDF. 4 needles total, numb from carpus down
High 4 point block
Bandage sutured over a wound or incision site. Create suture loops with umbilical tape to hold down
Stent bandage
Starts immediately after wounding. Need wound contraction to assist which begins 2nd week of injury.
Epithelialization
Reimer emasulator
Immediate wound closure. Clean and clean contaminated wounds
Primary closure (healing)
Histology of retained testes contains
Atrophic seminiferous tubules
Castrated horses will still be fertile for
Up to three weeks
Used to decrease edema, usually use Nitrofurazone ointment, DMSO, and Epsom salts. Use saran wrap to support bandage. Remove and wash limb at least daily
Sweat bandage
If going well change a cast
6 weeks in adults and 7-14 days in neonate, if swelling when 1st placed then change at 3-5 days
Most common tears within the synovial cavity on which tendon
DDF in forelimb and Manica flexoria in hindlimb
Paralysis of the suprascapular nerve caused by trauma
Sweeny
Grade III lameness
Consistently observable at a trot under all circumstances
Treatment for thrush
Removal of all loose horn, caustic agents like copper sulfate
Cryosurgery causes tissue destruction by
Direct cellular damage and/or anorexia to the microvasculature, this causes cellular dehydration causing changes to macromolecules, lipids, and pH and formation of intracellular ice crystals. Also causes cell membrane damage and thermal shock
Tendon consists of
70% water, 30% collagen and shit (type I collagen)
Most important for survival of a free graft
Prep the recipient site. Topical antibiotics 24-48hr before graft, and granulation tissue flush with the skin
Used in horses with navicular. Extends beyond the heel.
Egg bar shoe
Only modality providing real time evaluation of both soft tissue and some bone
Ultrasouns
Clinical parameters of OA
Effusion, Decreased viscosity of synovial fluid, Increased TP
Surrounds the tendon but is not in a sheath
Paratendon
Fractures distal to the fetlock require what kind of support
Dorsal splint
Used in post surgical lavage. Contains HA, Chondroition sulfate, and N-acetyl D-glucosamine.
Polygon
In wound healing initiated by decreased O2 tension, high lactate, and low pH in the wound
Angiogenesis
Abnormal keratinization in response to chronic injury. Signs include lameness, fistulous tract at coronary band and deviation at the white line
Keratoma
Nerve block for Abaxial (basi-sesamoid). Anesthesizes foot, P2, distal SDF and DDF and annular ligaments
Palmar digital
White modified emasculator
Dressing using Kerlix AMD (active ingredient is PHMB), microbes unable to become resistant, change every 3-7 days or sooner.
Antimicrobial dressing
Grade IV lameness
Obvious lameness with marked head nod, hitching, and shortened stride
Tendon laceration locations in forlimb and hindlimb
Forelimb: Severance between fetlock and carpus
Hindlimb: Severance below hock
Closure greater than 5 days after injury. Contaminated and infected wounds
Secondary closure
What is the appropriate hoof pastern axis for front and back limbs
Front-50o
Back -55o
Removal of the ductus deferents for male infertility
Vasectomy
Part of the tendon that contains intrinsic blood supply, nerves, and growth factors
Endotendon
Inexpensive cast material but no longer practical. Takes 24 hours to set and messy
Plaster of Paris
Not used for diagnostics of lameness. Lasts 5-6 hours and can be used for shoeing and therapeutics
0.5% Bupivacaine
Serra Emasculator
True or false, Double ligate during an open castration
False. Increases risk of infection
Cast application steps
Drill hole in toe of hoof wall- pass Gigli wire Stockinette 2.5x the length of cast Extra padding around proximal aspect and coronary band No finger prints of wrinkles Overlap cast padding and tape 50% Elastikon on top
Sudden and involuntary exaggerasted flexion of one or both hind limbs. Cause unknown
Stringhalt
Mechanism unknown. Inhibits degenerative enzymes and counteracts effects of IL-1 and reduction of synovial effusion.
Polysulfated Glycosaminoglycans (PSGAGs)
Tendons most prone to injury
SDF and Suspensory ligament
Due to load during heel strike
Where does the hoof grow from
Perioplic corium
Examples of non entry teaser surgery
Penis and prepuce deviation
Where does distal limb bandages extend to
Below the carpus/tarsus and below the coronary band
White emasculator
Used on full limb for large wounds, cellulitis, swelling, and fracture stabilization. Use two layers of secondary cotton.
Stack bandage
The trot is a
2 beat diaganol gate
Objectively detects and quantifies body movement irrgularity. Uses wireless tablets and shit. Data transmitted to tablet
Equinosis Q
Allows for stretch of tendon. Lost when load is applied
Crimp pattern
Graft failure happens from
Hemorrhage, motion, and infection
Unbranched non sulfated GAG that comes from type B synoviocytes. Provides viscoelasticity, boundary lubrication, scavages free radicals, and decreased aggrecan degeneration. Can be condroprotective IA and provides analgesia
Sodium hyaluronate/Hyaluronan/Hyaluronic acid/HA
Shoes used for angular limb deformaties
Dalmer shoes
Skin graft harvested under mane or abdomen. Recipient holds are made smaller than the graft and made first to allow hemostasis
Punch graft
Inserts on P3
DDF
In horses abdominal cryptochrid is most common on the ____ side
Left
Nerve block for palmar digital block. Approach in groove between flexors and ergot. Effect in 5 minutes
Palmar digital nerve
Indication for castration in horses
Behavior change. 1-1 1/2 years