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Flashcards in 45Coaptation_Prosthesis Deck (19):

general functions of coaptation

1. wound mgmt/protection2. immobilization for stability and support3. controlling edema


functions of coaptation used for fracture management

1. anatomic reduction2. prevent displacement, angulation, rotation3. preserve ST4. prevent fracture disease5. maintain the use of as many joints as possible6. early return to function


% of malunion and nonunion associated with ante brachial coaptation for fx repair in small toy breed dogs



what forces are counteracted with external coaptation

bending and some rotational forces provided joints above and below are immobilized


"50% rule" for external coaptation

cortical positioning of fracture ends should have 50% contact (apposition) to expect fracture healingtake rads AFTER bandage/cast placement to ensure adequate reduction of AT LEAST 50% in both planes


Spica vs velpeau

spica--hindlimb or front limb splint to immobilize shoulder or hip jointvelpeau--forelimb splint to immobilize scapular fracture/luxation, bandaged in flexion and patient is nonweight bearing


what is a Sarmiento type bandage

below-the-knee for certain tibial fractures in order to maintain stifle function


indication of a carpal flexion bandage

used when stabilization is not necessary and weight bearing is not desiredallows movement of elbow and shoulderimmobilizes carpus in flexion to take stress off flexor tendons after repair`


amount and type of padding for Robert Jones

1-3 rolls of 1 pound 12 inch cotton4-8 cm THICK (modified version is cast padding 1/2-2 cm thick)


Schroeder-Thomas splint

this is a traction device constructed of wire frame and soft bandage materialcounteracts muscle forces AND immobilizes the limb Used for distal extremity fractures


T/Fwhen casting for optimal fracture stability, cast padding should not exceed 2 layers

TRUEwhen casting for optimal fracture stability, cast padding should not exceed 2 layers


T/Fhobbles prevent adduction of the limbs

FALSEhobbles prevent ABDUCTION of the limbsfront: medial instability of the shoulderhind: obturator nerve paralysis/pelvic trauma, CAUDOVENTRAL coxofemoral luxation (stifle hobbles)


positioning of Ehmer sling

non weight bearing coaptation--max 3 weeksflexion of hip and stifleinternal rotation of hip jointabductionmost commonly used to protect repair following CRANIODORSAL hip lux or following closed reduction


what is a Robinson sling

prevents weight bearing in the hind limballows some range of motion of the hip stifle and hock joints


define orthosis

an externally applied device designed to stabilize, support and augment the function of an existing limb or body part1. nonrigid (neoprene)2. rigid (hi temp thermoplastics)3. semi-rigid (low temp thermoplastics)STATIC or DYNAMIC


define prothesis

an artificial substitute for a missing body part that is used for functional and/or cosmetic reasons.


types of sprains

injury to ligament 1 mild, over stretched (nonrigid)2 moderate, partial tear (semi rigid unless chronic/obese rigid)3 severe, complete disruption or tearing ( sx indication)


prosthetic candidate

1. amputation distal to carpus/tarsus--most successful for prosthetic2. forelimb is more challenging than hindlimb based on weight distribution3. compliance--owner and patient4. larger breeds, larger SA of bone, pressure distribution more likely to be successful BUT increased size can incr load--failure5. SX technique--adeaute skin coverage with incision away from stump and nerve endings away from areas of pressure


osseointegration prosthesis

one step--case reportinvolves threading the prosthesis on a titanium bolt (abutment) which is implanted in the bone of the proximal limbthe abutment provides attachment of the prosthesis at the level of the skin

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