Tarsal Diseases Flashcards
common tarsal diseases
- OC w/ secondary OA
- calcanean tendon rupture
- superficial digital flexor tendon luxation
- medial shear injury
- muscle contracture
OC w/ secondary OA
OC or OCD lesion on the medial or lateral tarsal ridge
often bilateral
OC treatment
surgical ONLY
- removal of flap + ESF
- arthrodesis
prognosis is guarded/poor
clinical signs of OC w/ OA
lameness
pain
effusion and ST swelling around the tarsus
calcanean tendon
common tendon comprised on 3 tendons from 5 muscles
- gastrocnemius tendon
- SDF tendon
- common tendon of gracilis, semitendinosus, biceps femoris
calcanean tendon rupture
complete or partial tear of the calcanean tendon
complete: trauma causing transection of the entire tendon
partial: repetitive microtraumas causing a tear in the gastrocnemius tendon only
clinical signs of CT rupture
chronic lameness
swelling
complete: entire tarsus is flat on the ground
partial: hyperflexion of the digits (indicates SDFT is intact)
CT rupture treatment
surgical only
- removal of abnormal scar tissue and apposition of healthy tendon with suture
can protect with screws, ESF, or external orthotic boot to lock foot in EXTENSION
SDFT luxation
lateral luxation of the SDFT off of the calcaneus
SDFT luxation treatment
surgical only
- suture fascial attachments opposite to the luxation
clinical signs of SDFT luxation
lameness similar to patellar luxation
medial shear injury
shearing injury causing loss of ST typically on the medial aspect of the joint
often see collateral ligament injury
medial shear injury treatment
wound care and stabilization with ESF or arthrodesis
muscle contracture
replacement of muscle tissue with fibrous tissues
most often: gracilis, semitendinosus, semimembranosus
clinical signs of muscle contracture
non-painful
alters gait/function
