Tarsus Flashcards
What is a capped hock?
Acquired bursa between SDFT and skin
What is bog spavin?
OCD of distal intermediate ridge of tibia
What horses are usually affected by bog spavin (OCD of tibia)?
Young horses (6 mo - 3 yr)
A 1 year old horse presents with effusion of the tarsocrural joint and lameness with no history of trauma. What is your likely diagnosis?
Bog spavin (OCD of distal intermediate ridge of tibia)
What is the treatment for bog spavin (OCD of tibia)?
Arthroscopy and fragment removal
Wait until 11+ months old!!
Tarsal bone collapse due to incomplete ossification is seen in dysmature/premature foals and can present as an angular limb deformity. What is the treatment and prognosis?
Supportive therapy until maturation
Px poor
What is bone spavin? What is juvenile spavin?
OA of the small tarsal joints (usually older horses)
Bone spavin in middle aged horses
Bone spavin (OA of small tarsal joints) can be due to poor tarsal conformation. What breed is predisposed to bone spavin?
Icelandic
A horse presents with palpable exostoses, squared off toes, mild lameness and a tarsocrural effusion. What is your likely diagnosis?
Bone spavin (OA of small tarsal joints)
What are the treatment options for small tarsal OA/bog spavin?
Analgesia, nutraceuticals
Intra-articuar medications - steroids, hyaluronic acid
Arthrodesis (chemically or surgically)
Farriery
What chemical is used for chemical arthrodesis?
Ethyl alcohol
What is the treatment for small tarsal bone fractures?
Conservative
Internal fixation
What is the treatment for malleolar fractures?
Surgical removal
arthroscopy
What is the treatment for calcanea fractures?
May be unstable
Euthanasia
A horse presents with severe lameness and swelling. Stress radiographs show a tarsometatarsal luxation. What are the treatment options?
Internal fixation and cast
Euthanasia
Collateral ligament injuries are treated conservatively and monitored with ultrasound. When is the prognosis poor?
If develop OA of joint
What is thorough pin?
Tarsal sheath synoviocoele
What is a tarsal sheath synoviocoele (or thorough pin)? What causes them?
Large unilateral swelling on caudal crus
Tear in synovial wall (often no osseous pathology)
What is seen on ultrasound of a synoviocoele?
Marked effusion
Fibrinous deposits
What are the treatment options for tarsal sheath synoviocele/thorough pin?
Conservative management - drain and steroids (likely to recur)
Surgery - enlarge communication tenoscopically
Calcane bursa swelling due to luxation of the SDFT is often due to a tear in the _____ attachment, lead to a ______ luxation.
(Medial or lateral)
Tear in medial attachment
Causes lateral luxation
An agitated horse presents with a marked swelling around the calcaneous and a large bursal effusion. Ultrasound confirms a tear of the medial attachment leading to luxation of the SDFT. What are the management options?
Conservative - rest, NSAIDs
Surgical - debride tear
