# Reconstruction Using Hinged Knee Replacement of an Unusual Knee Deformity as a Sequelae of Paediatric Septic Arthritis: A Case Report

## TL;DR

A man with a rare knee deformity from childhood infection underwent a hinged knee replacement to improve function and symptoms.

## Contribution

A novel hinged knee replacement approach for an unusual deformity caused by childhood septic arthritis is described.

## Key findings

- A 28-year-old man had a complex knee deformity from childhood septic arthritis.
- A hinged knee replacement was used to address the deformity and improve function.
- The case highlights late complications from pediatric osteoarticular infections.

## Abstract

Patients with osteoarticular infections may have initial complications secondary to bacteraemia and late complications related to bone alterations due to infection. We present a case of a 28-year-old man with a complex deformity of his left knee as a sequelae of septic arthritis, varus with concave deformity of the lateral tibial plateau, and bony deficiency in the medial compartment. We describe how a hinged knee replacement was undertaken to deal with an unusual deformity and improve patient symptoms and function.