Hi. From your description, you describe symptoms that have made you think that you have structural damage to your knee.
I think it would be wise to consult a specialist or GP about your problems. They can assess your symptoms, carry out a thorough examination and determine an appropriate course of action. If they deem it necessary, they can refer you to a specialist, such as an endocrinologist, who will carry out further examination and make a diagnosis.
In addition, you mentioned the possibility of tests that can be done at Number One Lab . Remember that seeking professional medical advice is crucial for an accurate diagnosis and appropriate treatment.