Digit Amputation, PIJ Arthrodesis Flashcards
What is the prognosis for this cow?
Not good
She’s missing a foot. That’s not ideal.
Digit amputation can be used as a treatment for:
- Septic coffin joint
- Infection of P2 or P3
- Fracture of P2 or P3
- Injury or sepsis distal to P1
For digit amputation in cattle, a tourniquet is applied on middle of metacarpus/metatarsus and an IV block is performed. How long can you leave the tourniquet on?
~2 hours
- You must leave the tourniquet on in order to keep anesthesia localized around the digit and control hemorrhage!*
- Padding under the tourniquet can prevent neurapraxia*
T/F: After digit amputation and skin flap suturing, it is important to place the pressure bandage after removing the tourniquet
False
It is important to place the pressure bandage before removing the tourniquet
T/F: Using an open technique for digit amputation, the area is left open to heal by 2nd intention
True
However, it is bandaged, just not sutured
T/F: In cattle, digit amputation is less successful if done on the medial digit of the thoracic limb or lateral digit of the pelvic limb
True
What is the average survival time for cattle post-amputation?
2 years
Some cattle never recover due to rapid breakdown of supporting structures (Disruption of soft tissues, Cruciate ligaments, interdigital ligaments, flexor tendons)
Digit amputation is generally not a good option if ________ digit or ________ digit because those are the digits that carry the most weight
Digit amputation is generally not a good option if lateral hind digit or medial front digit because those are the digits that carry the most weight
Name the structures involved in septic DIJ in cattle:
- P3, P2
- Navicular bursa/bone
- DDFT/sheath
- PIJ
What is the average amount of time that passes before a cow with DIJ septic arthritis presents with clinical signs?
4.4 weeks
Ranges from 1 day - 24 weeks
What are the clinical signs associated with septic arthritis of DIJ in cattle?
swelling, draining tract, laceration, puncture
What is the lay term for arthritis/osteoarthritis of the pastern joint?
high ring bone
What is the lay term for arthritis/osteoarthritis of the coffin joint?
low ring bone
T/F: Horses with severe high articular ringbone (pastern degenerative joint disease) have a poor prognosis for soundness, regardless of treatment
False
T/F: Horses with severe high articular ringbone (pastern degenerative joint disease) have a good prognosis for soundness with conservative treatment
False
T/F: Horses with severe high articular ringbone (pastern degenerative joint disease) have a good prognosis for soundness following pastern arthrodesis
True
Name a few reasons for pastern arthrodesis:
- High ring bone
- Luxation of the pastern
- Fracture second phalanx
- Septic arthritis of the pastern
What are the two main principles of PIP arthrodesis?
- Removal of all articular cartilage
- Maintenance of rigid stability in the joint
What is the most common surgical technique for pastern arthrodesis?
Combination of trans-articular lag screws and dorsal plate (DCP or LCP)
-
Benefits of using a combination of the two:
- Enhanced stability
- Improved comfort post op
- Shorter time in a cast
- Shorter return to function
- Shorter hospitalization time
- Less peri-articular new bone formation on dorsal aspect
Surgical puncture of a bone is termed:
osteostixis
What procedure is being performed here?
arthrodesis of proximal interphalangeal joint
The arrows in the picture are pointing to transected collateral ligaments
T/F: In general the prognosis for return to full use after arthrodesis of the proximal interphalangeal joint is better for the forelimb than the hindlimb
False
In general the prognosis for return to full use after arthrodesis of the proximal interphalangeal joint is better for the hindlimb than the forelimb
