yes you have to go for second opinion
. go for physiotherapy
clinic treatments are stretching for tight muscle like lumbricals, introssi and intrinsic muscle of thumb will allow more movement at thumb. strengthening exercise for thumb like make a fist, finger movement against force, exercise with ball,pencil, spring and rubber band etc will beneficial for maintainance of normal property of muscle and strengthening of muscle.paraffin
wax bath for reduction of pain and to improve muscle elasticity so improve your movement.ultrasound
at scar will make scar more pliable and allow more range at thumb.do writing rolling act will beneficial to you.