Hip luxation Flashcards
Which is the most common type of hip luxation?
craniodorsal
What are the main stabilizers of the hip joint and how many must be injured for a hip luxation to occur?
Joint capsule
Round ligament
Acetabular rim
What is the clinical presentation of hip luxation patients?
Craniodorsal luxations -> shortened limb, hold leg adducted, externally rotated
What will be noted on clinical exam with hip luxation?
Assymetry on pelvic examination
Palpation: Greater trochanter - ichiatic tuberosity and dorsal ilial wing does NOT form a triangle (as it normally should)
What diagnostic tests can be done clinically to increase suspicion of a hip luxation?
Palpation - not a triangle
Thumb displacement test - thumb pressed firmly into the depression between the greater trochanter and the ischial tuberosity - if displaced when limb rotated externally -> NOT luxated
What image diagnostics are required for diagnosis of hip luxation?
VD and lateral XR
What should also be assessed on XR when diagnosing hip luxation?
Concurrent injuries - dorsal acetabular rim damage and HD -> affect surgical success
What is the success rate of closed reduction in cats and dogs?
Successrate:
50% in dogs
60% in cats
What are the indications of closed reduction?
Always closed reduction first - if there is not significant bony damage on radiographs
Indications of surgery with hip luxation?
Significant bony damage
Lack of stability, reluxation
Bilateral luxation
Other orthopaedic trauma in another limb
Which type of sling is indicated for what type of luxation?
Craniodorsal - Ehmer sling
Caudoventral - Hobbles
What surgical options are there for hip luxations?
1) Capsulorrhapy - can be combined
2) Iliofemoral suture (not ventral lux!)
3) Modified Knowles Toggle (all directions, can cause articular surface damage)
