Protecting the Athlete’s Shoulder: The Importance of the External/Internal Rotator Ratio

A simple and reliable tool to assess muscle balance and optimize performance

In sports that heavily engage the upper body such as tennis, volleyball, handball, or swimming, shoulders are particularly prone to injuries. An imbalance between internal and external rotators can lead to pain, instability, and reduced performance.

Our latest article explains how measuring the shoulder’s RE/RI ratio can help healthcare professionals and coaches identify these imbalances before they become a problem. Thanks to modern tools such as portable dynamometers, this assessment is now quick, reliable, and feasible directly in clinics or on the field.

The article also covers how to interpret these ratios, detect critical asymmetries, and adapt strengthening programs to prevent injuries and enhance performance. It provides practical methods that allow monitoring muscle strength progression and supporting athletes in their training safely.

Discover how a simple evaluation can revolutionize shoulder injury prevention and improve long-term performance and safety.

Read the full article on our website and learn how to protect athletes’ shoulders effectively.