This article examines the relationship between joint hypermobility and focal dystonia in musicians. Nora Krohn explains how increased mobility can disrupt movement stability and proprioception, contribute to inappropriate technical habits and complicate recovery. It emphasizes the importance of healthy playing technique and targeted strengthening of stabilizing muscles.

In this part of her series, Nora Krohn explains how hypermobility – that is, increased joint mobility caused by looser or more flexible connective tissue – can affect movement habits, the occurrence of injuries, and also the recovery process from focal dystonia. She emphasizes that hypermobility does not only occur in players who struggle with dystonia, but in these people it can fundamentally affect the perception of one's own body and the stability of movement.

What is hypermobility and how does it manifest itself

Hypermobility means that the joints have a greater range of motion than usual. This can lead to less stability, weaker support in the joints and problems with the perception of the limit of healthy movement. The body does not give a clear signal when the movement is already "over the edge". Therefore, the player can overload certain areas without realizing it.

Nora mentions that many of the musicians with dystonia she worked with were hypermobile. For some, the hypermobility did not manifest itself anywhere other than in the playing, but for others it manifested itself outside the instrument - for example, with frequent sprains or back pain.

How hypermobility is related to the development of dystonia

Hypermobile joints can allow technically "difficult" movements without immediate pain - for example, excessive extension of the fingers or twisting of the wrist. This can lead to the development of movement strategies that are not in harmony with the body's natural structure. These strategies can be functional for years, but they gradually lead to the disruption of movement maps in the brain and thus to the loss of fine motor control – which is the essence of focal dystonia.

Problem with sense of stability and proprioception

Connective tissue contains many nerve endings. If there is less of it, the body provides less sensory information about where the joint is in space. Nora describes that her dystonia also included a loss of proprioceptive sensation in some parts of the hand. This meant that she had to rebuild not only her movement technique, but also her ability to sense the position of her body.

Solution: healthy technique and support of stabilizing muscles

The basis of recovery is a playing technique that respects the anatomy of the body - that is, it does not require isolated movements of the fingers, stretching of the joints or tension in the tendons. When the body learns to work in harmony with its structure, hypermobility itself ceases to be an obstacle.

For some people, however, even after changing the technique, there is still a need to specifically strengthen the muscles stabilizing problematic joints. Combination:
– new playing techniques, – guided rehabilitation, – and exercises recommended by a specialist, can be an ideal way to regain control and confidence.

Notes

This article was expertly edited based on a video by Nora Krohn and co-created with the help of ChatGPT.

Nora Krohn's official YouTube channel:
https://www.youtube.com/@norakrohn