A contact injury, such as a direct blow to the medial side (inside of knee), or a noncontact injury, such as a hyperextension stress. It is also commonly associated with an ACL tear which occurs with a high level of force and sports injury.
These types of legal fees are deductible as a business-related expense. You can deduct legal expenses incurred in your attempts to produce or collect taxable income as well as legal fees you pay in connection with the determination, collection, or refund of any tax.
Legal Expenses. You can usually deduct legal expenses that you incur in attempting to produce or collect taxable... Publication 502 - Medical and Dental Expenses (including the Health Coverage Tax Credit) - What Medical Expenses Are Includible?