Intense pain on the back of the left hand and inability to extend the wrist

First of all, one would need to understand the extent of the pain: muscle, tendon, or nerves? How did you cause it? Excessive and incorrect piano technique execution, I presume...

If the pain is persistent, I believe you should opt for infrared therapy.

I am not a doctor and therefore I am speaking from lived experience.

I had a problem like this and I resolved it with Cartijoint (the regular one, not the strong one which is a different product). It is a supplement without contraindications and should be taken once a day for about 3 months. You will see the effect. Then you can stop and see what happens and after how much time; this will give you an idea of how long the effects last after stopping. Many orthopedists do not believe in supplements, but others are very convinced of their effectiveness. I resolved it. For me, the pain occurred when I tried to extend my opposite hand a lot in certain positions. I recommend an accurate MRI anyway.

In any case, a physiatric examination would be needed. Perhaps anti-inflammatories or ultrasound therapy are also required... it needs to be evaluated

Aside from suspending practice, undergo a medical examination.

When you start playing again, post a video; it is not excluded that there are posture problems that we caused this inflammation.

I thank everyone for the replies

The doctor this morning prescribed an orthopedic examination, which I hope to be able to carry out within a few days

I will keep you updated, also to let you know the diagnosis and therapy.

I read that Laser and Tecar therapy do not work, I will certainly try to ask what the specialist can tell me about infrared treatment and the supplement

See you soon, let's hope for the best

I have tried all these things. Get an MRI. From there, you can also see the state of the cartilage.

It seems to me that I have resolved it with 4 days of oral anti-inflammatory (Brufen 600)

I no longer have pain and I have recovered full functionality of my hand

Let's hope for the best

i am very pleased to hear this.

i don't want to be a party pooper....however, i would still take into consideration the observation made by ttw.

we would need to understand what caused your tendonitis (that would most likely seem to be the diagnosis?!?!) in order to avoid subjecting the joint to the same stress.

My teacher told me to use more forearm weight and not to drop my elbow too much relative to the keyboard height, to do so only when necessary, in passages that require it

According to him, when I study I maintain an incorrect posture and rely too much on wrist strength instead of using the forearm

He invited me to check my position much more often during a study session

He was quite angry

p.s.:

Recently I have been studying arpeggios a lot and indeed I must say that the left hand was too tense, I was straining too much and the position was unnatural, assuming of course that in an arpeggio the hand has a natural position....

As I was telling you in my first response, joint and tendon pain is usually always the result of a wrong technical approach to the instrument. I agree with your Teacher's advice to use weight. Piano playing is not massive gymnastics; it is the ability to play by using the musculature as little as possible or, in extreme cases, using it in impulses. To play a fortissimo chord, there is no need to maintain muscular tension; once the hammer has struck the string, it has completed its function and it would make no sense to continue intensifying the musculature. I add a small note to the observations raised by your Teacher. The manifestation of pain is the alarm bell that you are doing something wrong. As soon as you feel the slightest pain, stop! Reflect on what you are doing wrong and remedy it immediately. If you cannot do it alone, let your Teacher help you find the incorrect piano gesture during the execution of the study. Playing correctly with weight will not cause you any pain, even if you were at the instrument for 4 hours straight.

Thanks Simone, I think I will be much more careful now

From what I could gather, it is about the extensor tendons. You are probably overdoing it with lifting your fingers. I advise you to lift your fingers less and focus more on finger flexion, an aspect that is often not taken enough into consideration. Additionally, you might need a magnesium supplement, as a deficiency can cause stiffness, inflammation, and tension; blood magnesium levels do not tell us if there is an actual deficiency.