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Carrera et al: Early Surgical Management of Medial Patellar Luxation in Juvenile Dogs
Veterinary and Comparative Orthopedics and Traumatology 2, 2024

🔍 Key Findings Summary

  • 5 juvenile dogs (mean age 7.2 months) with grade III–IV MPL were treated surgically.
  • Most had femoral varus + external tibial torsion; some had shallow trochlear grooves.
  • Distal femoral osteotomy was performed in 4/5 dogs; Tibial tuberosity transposition (TTT) in 3/5; Sulcoplasty in 2/5.
  • Mean time to weight bearing: 9.8 ± 5.5 days; healing: 55 ± 24 days
  • No reluxations, and final radiographic values for aLDFA and torsion were maintained at 1 year.
  • One complication due to domestic trauma, not surgical failure.
  • Early surgery appeared to preserve alignment and prevent deformity progression.

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← Articles

Carrera et al: Early Surgical Management of Medial Patellar Luxation in Juvenile Dogs
Veterinary and Comparative Orthopedics and Traumatology 2, 2024

🔍 Key Findings Summary

  • 5 juvenile dogs (mean age 7.2 months) with grade III–IV MPL were treated surgically.
  • Most had femoral varus + external tibial torsion; some had shallow trochlear grooves.
  • Distal femoral osteotomy was performed in 4/5 dogs; Tibial tuberosity transposition (TTT) in 3/5; Sulcoplasty in 2/5.
  • Mean time to weight bearing: 9.8 ± 5.5 days; healing: 55 ± 24 days
  • No reluxations, and final radiographic values for aLDFA and torsion were maintained at 1 year.
  • One complication due to domestic trauma, not surgical failure.
  • Early surgery appeared to preserve alignment and prevent deformity progression.

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Multiple Choice Questions on this study

In Carrera 2024 et al., what was the observed long-term effect on aLDFA and tibial torsion at 1-year postoperatively?

A. Significant relapse in all cases
B. Torsion returned to preoperative values
C. aLDFA increased beyond normal range
D. All values remained close to immediate postoperative values
E. Values worsened due to implant migration

Answer: All values remained close to immediate postoperative values

Explanation: Extensor mechanism alignment was maintained long-term, with no reluxations or deformity progression:contentReference[oaicite:3]{index=3}
In Carrera 2024 et al., what was the average time to radiographic bone healing following early MPL surgery?

A. 21 days
B. 35 days
C. 45 days
D. 55 days
E. 75 days

Answer: 55 days

Explanation: Mean time to healing was 55 ± 24 days, consistent across osteotomy techniques:contentReference[oaicite:2]{index=2}
In Carrera 2024 et al., on early MPL correction, which deformity was most frequently associated with grade III patellar luxation in juvenile dogs?

A. Shallow trochlear groove
B. Tibial valgus alone
C. Femoral varus with external tibial torsion
D. Internal tibial torsion
E. Craniocaudal femoral bowing

Answer: Femoral varus with external tibial torsion

Explanation: This combination was the most common deformity pattern in grade III cases:contentReference[oaicite:0]{index=0}
In Carrera 2024 et al., which technique was used to correct high external tibial torsion in one patient?

A. Tibial tuberosity transposition
B. Sulcoplasty
C. Proximal tibial derotation osteotomy
D. Medial patellar release
E. Distal closing wedge osteotomy

Answer: Proximal tibial derotation osteotomy

Explanation: This was required for correction of a 47° tibial torsion, not amenable to TTT:contentReference[oaicite:1]{index=1}
In Carrera 2024 et al., what was the only complication reported in the 5-patient case series?

A. Implant loosening
B. Patellar reluxation
C. Femoral fracture after trauma
D. Infection at osteotomy site
E. Failure of sulcoplasty

Answer: Femoral fracture after trauma

Explanation: This was unrelated to the surgical procedure itself and occurred during recovery:contentReference[oaicite:4]{index=4}

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