BONE ALLOGRAFTING IN REVISION KNEE ARTHROPLASTY: HISTOLOGICAL CHARACTERISTICS OF STRUCTURAL ALLOGRAFTS 54 MONTHS FOLLOW UP

Abstract

Compensation of large bone defects by AORI third type classification is the most difficult problem the audit knee arthroplasty. In this situation, the surgeon have to choose between three possibilities: to use metal cones/sleeves, and, in cases with severely damaged metaepiphysis, to use structural allografts or oncological megaimplants. No doubt, it is interesting to follow the processes that are taking place with massive structural allografts implanted into the human body long time ago. This article presents the case study of the rheumatoid arthritis patient’s treatment with a severe lesion of the knee joint, subjected to repeated revision surgeries, last two of which are made with the use of massive structural allograft of femur. Morphological study of a massive distal femur allograft in 54 months after surgery showed that superficial ingrowth of connective tissue and blood vessels happens on the allograft’s border with its partial restructuring of the bone tissue at the border with the recipient bone. However, the most of allograft remains unchanged even after 54 months after surgery.

Keywords

• revision knee arthroplasty
• bone defects compensation
• bone allografts