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.
The only medical expenses that are deductible are those that are more than 10% of adjusted gross income (if you or your spouse are 65 or older, the threshold is 7.5% until Dec. 31, 2016). This means that few taxpayers accumulate enough unreimbursed bills in one year to qualify for the deduction.