Hi, thanks for writing to HCM.
Myxoid degeneration of the menisci implies that they have become inherently weak. In such a case, any amount of minor trauma will result in meniscal tears.
So, you should avoid participating in IMPACT SPORTS and should not do sudden bending rotations of the knee. Physiotherapy
for strengthening of the QUADRICEPS muscle is indicated.
Hope this information is helpful. Good luck