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Scharpf et al: Assessment of Arthroscopic Subtotal Coronoidectomy in Treating Medial Coronoid Disease and Effect of Concurrent Autologous Conditioned Plasma in Dogs Using Force Plate Analysis
Veterinary and Comparative Orthopedics and Traumatology 2, 2024

🔍 Key Findings Summary

  • Subtotal coronoidectomy improved vertical and propulsive forces, but braking forces remained subnormal at 26 weeks.
  • No significant benefit was seen from ACP vs placebo at any timepoint across all force parameters or lameness scores.
  • Force plate analysis was more sensitive than visual lameness scoring.
  • Braking force (%FY+) was best at detecting persistent lameness, and SI < 0.9 persisted in most dogs at 26 weeks.
  • Outcome less favorable than historically reported — challenges status of subtotal coronoidectomy as “gold standard” for MCD.

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Scharpf et al: Assessment of Arthroscopic Subtotal Coronoidectomy in Treating Medial Coronoid Disease and Effect of Concurrent Autologous Conditioned Plasma in Dogs Using Force Plate Analysis
Veterinary and Comparative Orthopedics and Traumatology 2, 2024

🔍 Key Findings Summary

  • Subtotal coronoidectomy improved vertical and propulsive forces, but braking forces remained subnormal at 26 weeks.
  • No significant benefit was seen from ACP vs placebo at any timepoint across all force parameters or lameness scores.
  • Force plate analysis was more sensitive than visual lameness scoring.
  • Braking force (%FY+) was best at detecting persistent lameness, and SI < 0.9 persisted in most dogs at 26 weeks.
  • Outcome less favorable than historically reported — challenges status of subtotal coronoidectomy as “gold standard” for MCD.

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Multiple Choice Questions on this study

In Scharpf 2024 et al., what type of analysis was used to assess limb loading recovery over time?

A. Visual lameness scoring only
B. Pressure mat analysis with subjective scores
C. Force plate analysis at walk and trot
D. Quantitative force plate gait analysis at walk only
E. Owner questionnaires and radiographs

Answer: Quantitative force plate gait analysis at walk only

Explanation: Force plate parameters (FZ, FY+, FY-, impulses, and SIs) were recorded at walk pre- and post-operatively at 4, 12, and 26 weeks:contentReference[oaicite:4]{index=4}
In Scharpf 2024 et al., which statement best reflects the authors' conclusion on subtotal coronoidectomy?

A. It fully restores joint loading by 12 weeks
B. It improves force metrics but braking deficits persist
C. It is most effective when paired with ACP
D. It delays osteoarthritis progression long-term
E. It is superior to non-surgical management

Answer: It improves force metrics but braking deficits persist

Explanation: Authors concluded that despite improvement in vertical and propulsive forces, braking forces and SIs remained impaired at 26 weeks:contentReference[oaicite:5]{index=5}
In Scharpf 2024 et al., on arthroscopic MCD treatment, which ground reaction force parameter did **not** normalize by 26 weeks?

A. Maximum vertical force (FZmax)
B. Propulsive force (FY-)
C. Braking force (FY+)
D. Impulse of vertical force (IZ)
E. Symmetry index of propulsive impulse (SI IY-)

Answer: Braking force (FY+)

Explanation: Braking force (FY+) and related impulses remained subnormal at 26 weeks, despite improvement in other GRF metrics:contentReference[oaicite:1]{index=1}
In Scharpf 2024 et al., what symmetry index (SI) threshold was considered indicative of normal limb loading?

A. 0.75
B. 0.80
C. 0.85
D. 0.90
E. 1.00

Answer: 0.90

Explanation: A symmetry index (SI) ≥ 0.9 was defined as normal for limb loading across all force parameters:contentReference[oaicite:3]{index=3}
In Scharpf 2024 et al., what was the effect of autologous conditioned plasma (ACP) compared to placebo on postoperative outcome?

A. ACP significantly improved all force parameters
B. ACP improved braking but not vertical forces
C. ACP reduced lameness on visual scoring only
D. ACP had no statistically significant effect at any time point
E. ACP delayed recovery initially but improved long-term outcomes

Answer: ACP had no statistically significant effect at any time point

Explanation: No differences in vertical, braking, or propulsive force or symmetry indices were observed between ACP and placebo groups throughout the study:contentReference[oaicite:2]{index=2}

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