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- Title
Reconstruction of the Quadriceps Extensor Mechanism with a Calcaneal Tendon–Bone Allograft in a Dog with a Resorbed Tibial Tuberosity Fracture.
- Authors
Kim, Hyunho; Lee, Haebeom; Lewis, Daniel D.; Jeong, Jaemin; Kim, Gyumin; Jeon, Youngjin
- Abstract
Simple Summary: This case report describes the surgical technique and clinical outcome of reconstructing the quadriceps mechanism using a composite frozen calcaneal tendon–bone block allograft in a dog which had resorption of the tibial tuberosity following complications resultant from a tibial tuberosity transposition procedure. In this case, a dog exhibited chronic lameness due to the resorption of the tibial tuberosity following surgical correction of a medial patella luxation. To address these issues, a novel surgical procedure was employed using a composite calcaneal tendon–bone block allograft. The graft reconstructed the tibial tuberosity and facilitated reattachment of the patellar tendon. The surgery promptly restored the quadriceps extensor mechanism, enabling the dog to bear weight on the affected limb within 2 weeks. Twenty-nine months later, the dog had satisfactory limb function without recurrence of patella luxation. This case demonstrates the effectiveness of using a calcaneal tendon–bone allograft to restore the quadriceps extensor mechanism in dogs with irreparable tibial tuberosity fracture. A non-reducible tibial tuberosity fracture is a rare complication of tibial tuberosity transposition performed during correcting of medial patella luxation (MPL) in dogs. This condition severely disrupts the quadriceps extensor mechanism, leading to significant pelvic limb lameness. An 11-year-old, 1.8 kg spayed female Yorkshire Terrier sustained a comminuted left tibial tuberosity fracture during surgical correction of an MPL. Six months after surgery, the dog was markedly lame and unable to extend the left stifle. Radiographs revealed patella alta and resorption of the fragmented tibial tuberosity. A composite frozen allogeneic calcaneal tendon–bone block was utilized to reconstruct the tibial tuberosity and reattach the patellar ligament. Initial postoperative radiographs confirmed restoration of a normal patellar ligament to patella length ratio (1.42). Both the allogeneic bone used for tibial tuberosity reconstruction and the tendon used to reattach the patellar ligament were successfully integrated. The dog regained satisfactory limb function without recurrence of patella luxation, as reported by the owners 29 months postoperatively. The use of a calcaneal tendon–bone allograft effectively restored the functional integrity of the quadriceps extensor mechanism, providing a viable option for addressing quadriceps insufficiency resulting from the loss of the osseous tibial insertion.
- Subjects
TENDON transplantation; TIBIAL fractures; PATELLA; TREATMENT effectiveness; OPERATIVE surgery; PATELLAR tendon
- Publication
Animals (2076-2615), 2024, Vol 14, Issue 16, p2315
- ISSN
2076-2615
- Publication type
Article
- DOI
10.3390/ani14162315