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.
Assuming this allocation is reasonable, you may deduct the fees for nonpersonal matters as long as the deduction amount exceeds the 2% floor. Tax deductibility of legal expenses in the estate planning context is not very clear and fraught with danger. Care should be taken before claiming the deduction.