Rocheleau et al: Ex vivo evaluation of arthroscopically assisted shoulder stabilization in dogs using an intra-articular aiming device
Veterinary Surgery 4, 2023

🔍 Key Findings

Arthroscopically assisted stabilization with an IAD was feasible in cadaveric canine shoulders using both bone anchor and suture-toggle techniques.
Suture-toggle repair was successfully performed in all specimens, while bone anchors could not be deployed in 3/10 shoulders, indicating lower feasibility.
Median surgical time was shorter for the suture-toggle group (25.5 min) compared to the anchor group (37.3 min).
Postoperative abduction angles returned to baseline in the anchor group, while the suture-toggle group had slightly reduced angles, suggesting possible overtightening.
Violation of the articular surface occurred in 2 anchor specimens and 1 suture-toggle specimen, but none were considered likely to be clinically significant.
Overall targeting accuracy using the IAD was 88%, supporting its utility in guiding tunnel/anchor placement.
CT measurements showed acceptable bone stock and insertion angles, but anchor insertion angles were lower than optimal for mechanical pullout strength.
Suture-toggle technique was considered simpler and more consistent, with fewer complications and faster execution than anchor placement.

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Rocheleau et al: Ex vivo evaluation of arthroscopically assisted shoulder stabilization in dogs using an intra-articular aiming device
Veterinary Surgery 4, 2023

🔍 Key Findings

Arthroscopically assisted stabilization with an IAD was feasible in cadaveric canine shoulders using both bone anchor and suture-toggle techniques.
Suture-toggle repair was successfully performed in all specimens, while bone anchors could not be deployed in 3/10 shoulders, indicating lower feasibility.
Median surgical time was shorter for the suture-toggle group (25.5 min) compared to the anchor group (37.3 min).
Postoperative abduction angles returned to baseline in the anchor group, while the suture-toggle group had slightly reduced angles, suggesting possible overtightening.
Violation of the articular surface occurred in 2 anchor specimens and 1 suture-toggle specimen, but none were considered likely to be clinically significant.
Overall targeting accuracy using the IAD was 88%, supporting its utility in guiding tunnel/anchor placement.
CT measurements showed acceptable bone stock and insertion angles, but anchor insertion angles were lower than optimal for mechanical pullout strength.
Suture-toggle technique was considered simpler and more consistent, with fewer complications and faster execution than anchor placement.

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Multiple Choice Questions on this study

In Rocheleau 2023 et al., on shoulder stabilization, why were anchor insertion angles considered suboptimal in the study?

A. They were directed too proximally

B. Angles were <30°, reducing pullout strength

C. Angles exceeded 90°, risking articular violation

D. They compromised the glenoid rim

E. They increased suture tension unpredictably

Answer: Angles were <30°, reducing pullout strength

Explanation: Suboptimal anchor insertion angles (<30°) could compromise mechanical pullout strength, per CT assessment.

In Rocheleau 2023 et al., on shoulder stabilization, what was the primary advantage of the suture-toggle technique compared to bone anchors?

A. Required fewer CT scans

B. Enabled bilateral stabilization

C. Simpler technique with fewer failures

D. Higher resistance to pullout forces

E. Better bone integration

Answer: Simpler technique with fewer failures

Explanation: Suture-toggle stabilization was successful in all specimens and had fewer technical issues than the bone anchor group.

In Rocheleau 2023 et al., on shoulder stabilization, which complication was more common with bone anchor placement than with suture-toggle stabilization?

A. Anchor dislodgement

B. Joint capsule rupture

C. Violation of articular cartilage

D. Bone tunnel fracture

E. Anchor migration

Answer: Violation of articular cartilage

Explanation: Articular cartilage violation occurred in 2 bone anchor cases versus 1 suture-toggle case.

In Rocheleau 2023 et al., on shoulder stabilization, which stabilization technique showed a statistically significant reduction in abduction angle postoperatively?

A. Bone anchor

B. Suture-toggle

C. Both equally

D. Neither technique

E. Abduction angle not assessed

Answer: Suture-toggle

Explanation: Postoperative abduction angles were slightly lower than baseline in the suture-toggle group, suggesting some overtightening.

In Rocheleau 2023 et al., on shoulder stabilization, what was the overall targeting accuracy of the intra-articular aiming device (IAD) during shoulder stabilization?

A. 70%

B. 88%

C. 100%

D. 95%

E. 82%

Answer: 88%

Explanation: Use of the intra-articular aiming device (IAD) resulted in an overall targeting accuracy of 88%.

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