Study suggests double plating may strengthen canine scapula repair

A new ex vivo study in Veterinary Surgery found that double plate fixation produced a stiffer construct and less displacement than single plate fixation in a comminuted canine scapula fracture gap model. Investigators at the University of Wisconsin–Madison tested 14 paired canine scapulae, using a 2.4 mm plate along the cranial scapular spine in all specimens and adding a secondary 2.0 mm plate on the caudolateral border in the double-plated group. Across cyclic loading, the double-plated constructs showed significantly lower mean displacement and higher mean stiffness than single-plated constructs, although primary plate strain did not differ significantly between groups. The paper builds on a prior case report from the same group describing successful clinical use of double plate fixation in a dog with a comminuted scapular fracture. (pmc.ncbi.nlm.nih.gov)

Why it matters: Scapular fractures are relatively uncommon in dogs, but body fractures can be difficult to stabilize because of the bone’s thin, flat anatomy and limited screw purchase. Earlier biomechanical work in the canine scapula found no clear pullout-strength advantage for one plate type over another, underscoring why construct configuration may matter as much as implant choice. For surgeons managing highly comminuted scapular injuries, these new data suggest dual plating may better resist motion across a fracture gap and support a more stable bridging construct, though the findings come from a laboratory model rather than clinical patients. (pubmed.ncbi.nlm.nih.gov)

What to watch: The next step is clinical outcome data showing whether the biomechanical advantage of double plating translates into faster functional recovery, fewer complications, or more reliable union in dogs with real-world scapular fractures. (pmc.ncbi.nlm.nih.gov)