# Technical note—the use of an inclinometer to accurately guide intra-operative femoral de-rotational osteotomies

## TL;DR

This paper describes a method using a bubble inclinometer to guide femoral de-rotational osteotomies during surgery for better accuracy.

## Contribution

The novel use of a bubble inclinometer for intra-operative guidance in femoral de-rotational osteotomies is introduced.

## Key findings

- A subtrochanteric transverse osteotomy with intramedullary nail fixation is the preferred technique.
- The bubble inclinometer provides accurate intra-operative guidance for femoral de-rotation correction.

## Abstract

Femoral de-rotational osteotomies are a safe and effective treatment for symptomatic excessive femoral anteversion or retroversion. The author’s preferred technique for performing a de-rotational osteotomy is via a subtrochanteric transverse osteotomy with intramedullary nail fixation. We describe a method for guiding femoral de-rotation correction intra-operatively using a bubble inclinometer.