Summary
Objective: To report the successful management of a suspected infected tibial fracture in a
common grey seal.
Study design: Case report.
Animal: Female common grey seal (Halichoerus grypus), 2 weeks old, 20 kg.
Methods: A closed, complete, transverse fracture of the left tibial distal diaphysis was debrided,
reduced and stabilized using a string-of-pearls (SOP) locking plate covered with polymethylmethacrylate
impregnated with gentamicin. Fracture of the ipsilateral fibula was left untreated.
Postoperative radiographs were obtained immediately, and at 10 days, three weeks,
and six weeks post-surgery, and a computed tomographic examination was performed 2.5
months post-surgery. A species-specific progressive rehabilitation programme was conducted.
Results: Bone healing of both fractures and absence of injury of the distal tibial growth
plate were evident on the 2.5 month follow-up examination, and also full range-of-motion
of the flipper was preserved and no lameness or difficulty with swimming and hunting
were detected. On computed tomography, signs of chronic left coxofemoral and ilial
wing trauma were incidentally detected. The seal was released three months postoperatively.
Conclusion: A transverse infected distal fracture of the tibia and fibula in a young common grey
seal was successfully managed with the combination of single SOP plating of the tibia,
local antibiotic release and a specific rehabilitation programme.
Clinical relevance: Surgical treatment of a long-bone fracture in a wild immature grey seal was successful
with a combination of techniques adapted to the species.
Keywords
Seal - infection - fracture - repair - SOP - string-of-pearls plate