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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:

Valgus Knee (VII) Management Of Bone Defect


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:

TypesOptions
Small defects (<5 mm)Cement
Contained defectsImpacted cancellous bone graft
Larger non-contained defectsStructural bone grafts (auto or allografts)Modular implantsScrews with cement or graft


Valgus Knee (VII) Management Of Bone Defect

Fig 20-2 Cement fixed screws


Valgus Knee (VII) Management Of Bone Defect

Fig 20-3 Modular implants


Valgus Knee (VII) Management Of Bone Defect

Fig 20-4 Medial segmental tibial defect filled with autogenous bone block from distal femoral resection fixed with cancellous screws

Valgus Knee (VII) Management Of Bone Defect

Fig 20-5 Autograft for tibial bone defect

Valgus Knee (VII) Management Of Bone Defect

Fig 20-6 Autograft for femoral bone defect

Valgus Knee (VII) Management Of Bone Defect

Fig 20-7 JUST SKII tibial augment options for bone defect


Joint information 2017 020.pdf