What can be the next treatment for tmj anterior disc dispacemnt, in case splint therapy& athroscopy fails? with mention that condyle is deformed

A few options: Treatments range from injections, physical therapy, medications, behavioral therapy, oral occlusal orthotics (mouth guards) to surgical correction. Any treatment undertaken is done with the goal of improving function and reducing pain (rather than to reposition the disc). I would caution against jumping on the surgical option.

Osseous surgery: Like a hip or knee, really bad bone formations can be replaced.

Open surgery: If you've had splint therapy, TMJ arthroscopy, associated conservative methods, and you're symptoms are still intolerable, open surgery could be the next step. Make sure you see a very experienced TMJ surgeon for this type of surgery.

Surgical repair: For a few patients, surgical repair of the joint may be suggested. Various operations can be done, depending on the individual situation. See an Oral Surgeon for consultation and TMJ CBCT..