Risk factors associated with fibular fracture after tibial plateau leveling osteotomy

Vet Surg. 2009 Apr;38(3):355-60. doi: 10.1111/j.1532-950X.2009.00504.x.


Objective: To determine the incidence of, and risk factors for, fibular fracture after tibial plateau leveling osteotomy (TPLO) in dogs.

Study design: Case series.

Sample population: TPLO (n=168) on 142 dogs.

Methods: Medical records (January 2006-September 2007) and radiographs of all dogs that had TPLO were reviewed. Data retrieved were breed, sex, age, weight, type of plate, use of a jig, time to recheck, preoperative tibial plateau angle (TPA), immediate postoperative TPA, and presence or absence of fibular fracture.

Results: Fibular fractures occurred in 5.4% TPLOs. Body weight, change in TPA, and preoperative TPA were significantly higher in dogs with fibular fracture. TPLO without use of a jig was significantly associated with fibular fracture. Age, postoperative TPA, and plate type were not significantly associated with fibular fracture.

Conclusions: Fibular fracture is uncommon after TPLO. Risk factors are increased body weight, greater preoperative TPA, greater change in TPA, and TPLO performed without a jig. All fractures occurred during convalescence.

Clinical relevance: Owners should be warned of potential complications and risk factors associated for fibular fracture after TPLO.

MeSH terms

  • Animals
  • Anterior Cruciate Ligament / surgery
  • Anterior Cruciate Ligament Injuries
  • Bone Plates / veterinary
  • Dogs / injuries*
  • Dogs / surgery
  • Female
  • Fibula / diagnostic imaging
  • Fibula / injuries*
  • Fracture Fixation, Internal / methods
  • Fracture Fixation, Internal / veterinary
  • Fractures, Bone / diagnostic imaging
  • Fractures, Bone / etiology
  • Fractures, Bone / veterinary*
  • Lameness, Animal
  • Male
  • Osteotomy / methods
  • Osteotomy / veterinary*
  • Postoperative Complications / veterinary*
  • Radiography
  • Retrospective Studies
  • Risk Factors
  • Tibia / surgery
  • Treatment Outcome