Ch. 64: Tarsus & Metatarsus Flashcards
Sugiyama Vet Sx 2018
Biomechanical evaluation of 6 transarticular tibiotarsal immobilization methods in canine cadaveric limbs
any method better or worse?
conclusion?
postoperative tibiotarsal immobilization methods after CCT repair - evaluated transarticular immobilization
There was no change of tibiotarsal joint angle between extended digits and flexed digits under both unloaded and loaded conditions
Change in tibiotarsal joint angles did not differ among any of the immobilization techniques tested here
Conclusion: 6 techniques appear equally effective at limiting tibiotarsal joint flexion during single axial loading of 200 N.
Yardimci VCOT 2018
Management of complete talocrural luxations by selective talocrural arthrodesis using hybrid transarticular ESF in dogs
most common comps?
outcome?
conclusion?
Complete talocrural luxations - performed selective talocrural arthrodesis using a hybrid transarticular external skeletal fixator frame
Dogs started to use the injured limb between postoperative days 1-11
Pin or wire tract related complications were observed in all dogs
Talocrural fusion in all but one
Mid-term clinical outcomes score was excellent in 13/17 dogs, good in 3/17 dogs and poor in 1/17
conc: transarticular hybrid external fixator may allow early use of postoperative limb with an excellent patient compliance
Gunstra JAVMA 2019
Description and outcome of prosthetic ligament placement for stabilization of medial or dorsomedial tarsometatarsal joint luxation in dogs and cats: 16 cases (2004-2017)
Did they have major, minor, or catastrophic complications?
Conclusion?
Prosthetic ligament placement successfully stabilized the luxated tarsometatarsal joint in all 16 patients.
6 patients developed minor postoperative complications, which included bandage-associated dermatitis or ulceration (n – 5) and orthopedic wire failure (1)
No major or catastrophic complications were reported
All 13 owners perceived that the described technique resulted in satisfactory long-term function for their pets
Conclusion: Prosthetic ligament placement may be an alternative to arthrodesis for tarsometatarsal joint stabilization
Anesi Vet Sx 2020
Long-term outcomes after pantarsal arthrodesis with medial plate fixation without external coaptation in 30 dogs
36 PTA performed in 30 dogs
% Minor, Major I, Major II comps?
examples of each?
Outcome % full fn? acceptable fn?
Conclusion re: medial plate pan tarsal arthrodesis?
22% minor comp
31% major II comp
31% major I comp
catastrophic 3% (1 case) - amputation
Minor – broken bent or loose screws, Achilles tendon pain, metatarsal fracture
Major II – SSI, 1 metatarsal fx
Major I – implant or pain related
Outcome was reported as full function in 12 dogs (40%) & acceptable function in 14 dogs (47%), with no owners reporting unacceptable function
Conclusion: Dogs treated with PTA by medially applied plate had a high incidence of complications requiring surgical or medical management, although full or acceptable function was achieved in 29 of 30 dogs.
Luescher Vet Sx 2020 PQ
Biomechanical comparison of knotted and knotless stabilization techniques of the tarsal medial collateral ligament in cats: A cadaveric study
what repairs?
how did they compare to intact tarsus PQ?
conclusion?
3 repairs :
bone tunnel with polypropylene (PP) suture,
bone tunnel with polyethylene (PE) cord,
knotless anchor technique with PE cord
(No differences in stiffness, total elongation, or peak-to-peak elongation were found between knotless technique and intact controls but tunnel technique & PP were weaker
Mean load to 2 mm of displacement was higher after knotless than after knotted PP repairs & did not differ between tarsi repaired with the tunnel or anchor repairs with PE)
Conclusion: The mechanical properties of intact tarsi were superior to those of tarsi repaired with tunnel techniques and PP but were similar to those of tarsi repaired with knotless techniques with PE.
– knotless better (knotless anchor technique with polyethylene)
Buj VCOT 2021
Isolated articular fractures of the canine talus: diagnosis and signalment in fourteen dogs
MC fx configuration?
Orthogonal rads % identifying fx?
Follow up imaging modalities?
Conclusion?
Most common fx configuration involved the lateral trochlear ridge only.
13 cases originally had orthogonal views of the talus but fx only visible in 5 cases (38%)
remainder were dx on further radiographic views, ct or scintigraphy
conclusion: isolated fx are rare and can be dx challenge. Oblique/skyline views or adv imaging may be required to make dx d/t complex anatomy of bone
Armstrong Vet Sx 2019
Injuries involving the central tarsal bone in nonracing dogs: Short-term outcomes and prognostic factors
MC fracture type?
Overall comp %? most common comps?
Major comps associated with what factor and specifically what bone? RR?
Most common injury type V fracture of central tarsal bone
Complications were diagnosed in 18 (62%) dogs
- 31% (9/29) bandage sores, others SSI, wound dehiscence, implant failure
Major complications associated with: presence of multiple tarsal fractures (RR 3.94), specifically when calcaneus was involved (RR 5.78)
Goffart Vet Sx 2021
Biomechanical comparison of screw and suture fixation for temporary transarticular tarsocrural immobilization in canine cadavers
compared what immobilization techniques?
Which technique suitable for transarticular immobilization?
Load at failure higher in which?
evaluate an ultrahigh-molecular-weight polyethylene (UWMWPE) suture for temporary tarsocrural immobilization as a potential alternative to the existing surgical method, which uses a 4.5 AO/ASIF calcaneotibial cortical screw
Conclusions:
Both techniques were suitable for transarticular tarsocrural immobilization in large-breed canine cadavers.
While load at failure was higher for the screw compared to the suture construct, stiffness of both methods was comparable based on the laboratory settings in this in vitro study.
Petazzoni VCOT 2020
Radiographic recognition of tarsal malformation in 8- to 9-week-old bernese mountain dogs
What is tarsal malformation definition?
% affected with what abnormality?
Tarsal malformation defined as an abnormal extension of the central tarsal bone on its medial side, or presence of ectopic bone located medially to the central tarsal bone, talus and second metatarsal bones (proximomedial, distomedial and metatarsal ossification, respsectively)
All puppies were clinically normal
75% (39/51) showed ossification sites medial to the tarsus as defined.
C/S: tarsal malformation can be identified in the 8- to 9-week old BMD. C/S remains to be determined (incidental vs precursor to the development of other clinical relevant and related issues in the tarsus)
