
cfm
Other causes of knee locking are torn medial meniscus, knee cap mal-alignment, osteoarthritis,
knee arthritis, torn lateral meniscus, Osteochondritis dissecans - occasional
knee locking with instability, Recurrent patella dislocation - may cause knee locking or knee collapse, Chondromalacia patella - occasional locking or knee collapse, Knee alignment problem, Knee fragment or Knee cartilage disorder.
Hope this helps. Do not ignore it. Consult an orthopedic specialist.