Valgus Knee (VII) Management Of Bone Defect
Mar. 27, 2019
Causes:
● Arthritis with angular deformity
● Lateral condylar hypoplasia
● Osteonecrosis
● Trauma
● Post-surgical ( HTO, TKA )
Types:
Fig 20-1
A. Contained or cavitary defects ---intact rim of cortical bone surrounding the deficient area; B. Non-contained or segmental defects ---more peripheral and lack a bony cortical rim.
Treatment options:
| Types | Options |
| Small defects (<5 mm) | Cement |
| Contained defects | Impacted cancellous bone graft |
| Larger non-contained defects | Structural bone grafts (auto or allografts)Modular implantsScrews with cement or graft |
Fig 20-2 Cement fixed screws
Fig 20-3 Modular implants
Fig 20-4 Medial segmental tibial defect filled with autogenous bone block from distal femoral resection fixed with cancellous screws
Fig 20-5 Autograft for tibial bone defect
Fig 20-6 Autograft for femoral bone defect
Fig 20-7 JUST SKII tibial augment options for bone defect
