← Articles

Ferreira et al: Repeatability and reproducibility of a tomographic method for measuring tibial torsion in dogs with medial patellar luxation
Veterinary Surgery 3, 2025

🔍 Key Findings

Objective: Validate a new 3D CT-based method for measuring tibial torsion in dogs with MPL, comparing it to a traditional method.

Sample: 40 tibiae from client-owned dogs with MPL (primarily small-breed).

Repeatability (intraobserver):

  • New method: ICC = 0.99 → excellent agreement

Reproducibility (interobserver):

  • New method: ICC = 0.83 → high agreement
  • Traditional method: ICC = 0.52 → moderate agreement

Torsion angle measurements:

  • New method avg: 16.00° ± 8.77
  • Traditional method avg: 8.76° ± 4.92

Conclusion: The new method is more repeatable, reproducible, and provides higher torsion values than the traditional Aper method, especially reliable for small-breed dogs.

Simini Surgery Review Podcast

How critical is this paper for crushing the Boards?

🚨 Must-know. I’d bet on seeing this.

📚 Useful background, not must-know.

💤 Skip it. Doubt it’ll ever show up.

Thanks for the feedback!
‍We'll keep fine-tuning the articles vault.
Oops — didn’t go through.
‍Mind trying that again?
← Articles

Ferreira et al: Repeatability and reproducibility of a tomographic method for measuring tibial torsion in dogs with medial patellar luxation
Veterinary Surgery 3, 2025

🔍 Key Findings

Objective: Validate a new 3D CT-based method for measuring tibial torsion in dogs with MPL, comparing it to a traditional method.

Sample: 40 tibiae from client-owned dogs with MPL (primarily small-breed).

Repeatability (intraobserver):

  • New method: ICC = 0.99 → excellent agreement

Reproducibility (interobserver):

  • New method: ICC = 0.83 → high agreement
  • Traditional method: ICC = 0.52 → moderate agreement

Torsion angle measurements:

  • New method avg: 16.00° ± 8.77
  • Traditional method avg: 8.76° ± 4.92

Conclusion: The new method is more repeatable, reproducible, and provides higher torsion values than the traditional Aper method, especially reliable for small-breed dogs.

Simini Surgery Review Podcast

Know What Matters in the Literature - and Why

We distill peer-reviewed surgical studies into clinically relevant summaries and
exam-style questions, so you can make informed decisions with confidence.

Free Access. No Spam. Just Smarter Surgical Learning

Multiple Choice Questions on this study

In Ferreira 2025 et al., on tibial torsion measurement, what was the average torsion angle measured using the new method?

A. 8.76° ± 4.92
B. 10.3° ± 6.1
C. 12.25° ± 5.40
D. 16.00° ± 8.77
E. 19.50° ± 9.20

Answer: 16.00° ± 8.77

Explanation: The new CT-based method reported a mean torsion angle of 16.00° ± 8.77.
In Ferreira 2025 et al., on tibial torsion measurement, which method had the highest interobserver reproducibility?

A. Traditional radiographic method
B. Aper method
C. CT-based method from 2023 study
D. 3D tomographic method described in this study
E. Manual goniometric evaluation

Answer: 3D tomographic method described in this study

Explanation: The new method had an interobserver ICC of 0.83, higher than the traditional method (0.52).
In Ferreira 2025 et al., on tibial torsion measurement, which population was primarily studied?

A. Large-breed dogs with CCL rupture
B. Healthy dogs with no orthopedic disease
C. Dogs with elbow dysplasia
D. Small-breed dogs with MPL
E. Dogs with bilateral THR

Answer: Small-breed dogs with MPL

Explanation: The study focused on dogs with MPL, mostly from small breeds.
In Ferreira 2025 et al., on tibial torsion measurement, how did the traditional method compare in interobserver agreement?

A. ICC = 0.99
B. ICC = 0.83
C. ICC = 0.52
D. ICC = 0.39
E. ICC = 0.25

Answer: ICC = 0.52

Explanation: The traditional method had moderate interobserver agreement (ICC = 0.52).
In Ferreira 2025 et al., on tibial torsion measurement, which of the following best describes the intraobserver agreement of the new method?

A. Weak agreement
B. Moderate agreement
C. Excellent agreement
D. Unreliable
E. Not assessed

Answer: Excellent agreement

Explanation: The new method demonstrated excellent intraobserver repeatability with ICC = 0.99.

Access the full library of surgical summaries and exam-style questions.

Get Instant Access

Educational content developed independently and supported by Simini.

The maker of Simini Protect Lavage.

Review More Key Summaries from this Veterinary Surgery Journal Issue

Caiazzo

 et al: 

Impact of suture materials polydioxanone and poliglecaprone 25 on non-infected clean orthopedic stifle procedure incisional dehiscence rates

Peng

 et al: 

Serum amikacin concentrations in dogs with naturally occurring open wounds treated with topical amikacin in carboxymethylcellulose hydrogel

Logothetou

 et al: 

Complications and influence of cutaneous closure technique on subdermal plexus flaps in 97 dogs (2006–2022)

Scott

 et al: 

Revision of osteointegrated acetabular cup prostheses in nine dogs

Lotsikas

 et al: 

Proximal lateral insertion portal of an intra-articular arthroscopic stifle lever: A cadaveric study