A composite absorbable implant used to treat subchondral bone cysts in 38 horses.
Authors: Ravanetti Paolo, Lechartier Antoine, Hamon Muriel, Zucca Enrica
Journal: Equine veterinary journal
Summary
# Editorial Summary: Absorbable Implant Treatment for Subchondral Bone Cysts Subchondral cystic lesions remain a significant orthopaedic challenge in young horses, with no established consensus on optimal treatment approaches despite three decades of proposed interventions. Ravanetti and colleagues evaluated a biocompatible absorbable composite implant in 38 horses aged 10–24 months, treating lesions via trans-cortical extra-articular debridement across multiple anatomical locations, with clinical and radiographic follow-up extending 28–46 months (mean 37 months). Of the 38 cases, 36 horses (95%) demonstrated complete resolution of lameness, and radiographs at 120 days post-operatively showed an average of 77% cyst filling, with only two surgical complications recorded. The extra-articular approach proved technically feasible across different sites and offers practitioners a less invasive alternative to intra-articular procedures, though the study's retrospective design and variable radiographic quality across multiple facilities—alongside missing data on implant resorption kinetics—warrant cautious interpretation pending prospective validation and standardised imaging protocols.
Read the full abstract on PubMed
Practical Takeaways
- •Trans-cortical extra-articular debridement with absorbable implant insertion offers a viable alternative for treating subchondral cysts in young horses with good short-term outcomes (94.7% lameness resolution)
- •This approach can be applied to SCLs in multiple anatomical locations, providing flexibility in case management
- •Radiographic evidence of cyst filling at 120 days post-surgery supports considering this technique as a treatment option, though longer-term resorption data would strengthen clinical decision-making
Key Findings
- •Lameness resolved in 36 of 38 horses (94.7%) treated with absorbable implant insertion via trans-cortical extra-articular approach
- •Average cyst filling of 77% was measured 120 days after surgery on radiographs
- •Surgical complications occurred in only 2 of 38 cases (5.3%)
- •The technique was feasible in different anatomical locations with clinical and radiographic improvement sustained over mean 37-month follow-up