Stifle

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Questions and Answers

Which breed is commonly reported in DSH for patella luxation in cats?

Siamese

Maine Coon

Persian

Abyssinian (correct)

What is the overall complication rate for patella luxation surgery in dogs and cats?

10-20%

40-50%

13-40% (correct)

5-10%

What is the most common form of patella luxation in cats?

Traumatic LPL

MPL (correct)

Unilateral MPL

Bilateral LPL

What is the recommended duration for activity restriction after patella luxation surgery in dogs and cats?

6-8 weeks Signup and view all the answers

What is the association percentage of patella luxation with hip luxation in cats?

50% Signup and view all the answers

What is the most common breed predisposed to patella luxation in cats?

Abyssinian Signup and view all the answers

What is the percentage of non-traumatic cases in patella luxation in cats?

60% Signup and view all the answers

What is the recommended duration for postoperative rechecks after patella luxation surgery in dogs and cats?

2 weeks Signup and view all the answers

What is the recommendation for concurrent correction of patella luxation and stifle stabilization for CrCL deficiency?

Possible to address both issues Signup and view all the answers

What is the most common form of patella luxation in dogs?

MPL Signup and view all the answers

What is the function of the patella in the stifle joint?

To stabilize the extensor mechanism alignment with the femoral shaft and trochlear groove Signup and view all the answers

What is the anatomical location of the patella?

Ossified sesamoid in quadriceps tendon insertion Signup and view all the answers

Which muscles are involved in the insertion of the patella?

Rectus femoris, vastus medialis, vastus lateralis, vastus intermedius Signup and view all the answers

What is the primary clinical significance of patella luxation?

Dislocation of the patella from its normal position Signup and view all the answers

In which part of the stifle joint does the patella luxation occur?

Between the femur and tibia Signup and view all the answers

What is the goal of surgical treatment options for patella luxation?

To realign the extensor mechanism and correct anatomical anomalies Signup and view all the answers

Which muscles are part of the extensor apparatus of the stifle joint?

Rectus femoris, vastus medialis, vastus lateralis, vastus intermedius Signup and view all the answers

What is the clinical grade used for classification of patella luxation?

I-IV Signup and view all the answers

Which anatomical anomalies contribute to the development of patella luxation?

Trochlear groove abnormalities Signup and view all the answers

What is the primary function of the patella in relation to the femoral shaft and trochlear groove?

Stabilize the extensor mechanism alignment Signup and view all the answers

Which type of patella luxation can be classified as iatrogenic?

Non-traumatic luxation Signup and view all the answers

What is the incidence of patella luxation in small breed dogs?

High Signup and view all the answers

What causes extensor malalignment in medial patella luxation (MPL)?

Femoral deformities Signup and view all the answers

What is the result of traumatic patella luxation?

Unilateral tear in retinaculum Signup and view all the answers

How is patella luxation clinically graded?

From I to IV Signup and view all the answers

What is involved in the orthopedic examination for patella luxation?

Palpation for luxation, assessment of CrCL stability, and examination maneuvers Signup and view all the answers

What is used for ruling out osteoarthritic changes and other underlying pathologies in the diagnosis of patella luxation?

Radiography Signup and view all the answers

What are the surgical procedures for patella luxation based on?

Grade and symptoms Signup and view all the answers

What is commonly used for patella luxation treatment?

Tibial tuberosity transposition Signup and view all the answers

What does patella groove replacement (PGR) address?

Severe cartilage damage in trochlear grooves Signup and view all the answers

Study Notes

Patella Luxation in Dogs

Patella luxation can be medial or lateral and is classified as non-traumatic, traumatic, or iatrogenic
Incidence of patella luxation is high in small breed dogs, with bilateral MPL being common
Extensor malalignment in MPL is due to femoral deformities and shallow trochlear groove
Traumatic patella luxation results in unilateral tear in retinaculum, while non-traumatic luxation causes retinaculum fibrosis
Patella luxation is clinically graded from I to IV, with concurrent abnormalities including cranial cruciate ligament (CrCL) tear
Diagnosis of patella luxation involves orthopedic examination and diagnostic imaging, with differential diagnoses including hip and stifle-related issues
Orthopedic examination includes palpation for luxation, assessment of CrCL stability, and examination maneuvers
Diagnostic imaging involves radiography to rule out osteoarthritic changes and other underlying pathologies
Treatment strategies for patella luxation are grade and symptom-based, with surgical procedures including trochleoplasty and tibial tuberosity transposition
Trochleoplasty techniques include recession trochleoplasty, abrasion trochleoplasty, and trochlear chondroplasty
Tibial tuberosity transposition is commonly used for patella luxation treatment
Patella groove replacement (PGR) is used for severe cartilage damage in trochlear grooves and does not address patella lesions

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Description

Test your knowledge of patella luxation in dogs with this quiz. Explore the classification, diagnosis, and treatment of this common orthopedic condition in small breed dogs.