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Peycke et al: Center of rotation of angulation-based leveling osteotomy for stifle stabilization in skeletally immature dogs
Veterinary Surgery 3, 2022

🔍 Key Findings

  • CBLO was effective for stifle stabilization in skeletally immature dogs with CrCL injuries, avoiding disruption of proximal tibial growth plates.
  • Radiographic union of the osteotomy occurred in a mean of 6 weeks (range: 4–8 weeks), indicating rapid bone healing.
  • Full limb function was restored in all cases by long-term follow-up (mean 23 months), including dogs with initial complications.
  • Two dogs developed 19° valgus deformities due to screw interference with the proximal tibial physis; both were corrected surgically with return to function.
  • One dog developed 10° recurvatum due to over-rotation of the tibial plateau, but retained full function without revision.
  • CCS (countersink compression screw) caused early apophyseal closure in older dogs but had no adverse clinical effects.
  • In contrast, K-wire or plate-only fixation preserved open apophysis, suggesting implant choice may influence growth.
  • No meniscal injuries were observed, and all CrCL injuries were managed arthroscopically — 6 complete, 6 partial, 4 avulsions.

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← Articles

Peycke et al: Center of rotation of angulation-based leveling osteotomy for stifle stabilization in skeletally immature dogs
Veterinary Surgery 3, 2022

🔍 Key Findings

  • CBLO was effective for stifle stabilization in skeletally immature dogs with CrCL injuries, avoiding disruption of proximal tibial growth plates.
  • Radiographic union of the osteotomy occurred in a mean of 6 weeks (range: 4–8 weeks), indicating rapid bone healing.
  • Full limb function was restored in all cases by long-term follow-up (mean 23 months), including dogs with initial complications.
  • Two dogs developed 19° valgus deformities due to screw interference with the proximal tibial physis; both were corrected surgically with return to function.
  • One dog developed 10° recurvatum due to over-rotation of the tibial plateau, but retained full function without revision.
  • CCS (countersink compression screw) caused early apophyseal closure in older dogs but had no adverse clinical effects.
  • In contrast, K-wire or plate-only fixation preserved open apophysis, suggesting implant choice may influence growth.
  • No meniscal injuries were observed, and all CrCL injuries were managed arthroscopically — 6 complete, 6 partial, 4 avulsions.

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Multiple Choice Questions on this study

In Peycke 2022 et al., on CBLO in immature dogs, which structure must be **avoided during osteotomy** to preserve growth potential?

A. Proximal tibial cortex
B. Tibial tuberosity apophysis
C. Proximal tibial physis
D. Intercondylar eminence
E. Caudal cruciate ligament

Answer: Proximal tibial physis

Explanation: Avoiding the proximal tibial physis is key to preserving growth in skeletally immature dogs during CBLO.
In Peycke 2022 et al., on CBLO in immature dogs, what was the most common **complication** from improper screw placement in CBLO?

A. Tibial plateau fracture
B. CrCL graft failure
C. Meniscal tear
D. Tibial recurvatum
E. Valgus deformity

Answer: Valgus deformity

Explanation: Two dogs developed valgus deformities from screws breaching the distal lateral portion of the proximal tibial physis.
In Peycke 2022 et al., on CBLO in immature dogs, what was a **benefit of using K-wires** for tibial apophysis stabilization in CBLO?

A. Preserved apophyseal growth
B. Reduced implant failure
C. Improved screw purchase
D. Minimized surgical time
E. Decreased TPA variation

Answer: Preserved apophyseal growth

Explanation: Unlike CCS, K-wires allowed continued growth of the tibial tuberosity apophysis.
In Peycke 2022 et al., on CBLO in immature dogs, how many dogs developed **tibial recurvatum** due to over-rotation of the TPA during CBLO?

A. 0
B. 1
C. 2
D. 3
E. 4

Answer: 1

Explanation: One dog developed 10° recurvatum due to overcorrection to protect CrCL avulsion repair.
In Peycke 2022 et al., on CBLO in immature dogs, what was the **mean time to radiographic union** of the CBLO osteotomy?

A. 2 weeks
B. 4 weeks
C. 6 weeks
D. 8 weeks
E. 10 weeks

Answer: 6 weeks

Explanation: Mean healing time was 6 weeks (range 4–8), indicating rapid union typical in young animals.

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