Thanks for writing to health care magic.
You had an accident in bath room resulting in injuries in the form of;
on leg about 2 inches superior to ankle malleolus
No2 Injuries in popliteal fossa(behind knee)
You have past history of clot formation.
You have following post trauma risk factors;
Clot formation during long flight
Increase in swelling of ankle and popliteal fossa .
Since you’re planning to take flight of long duration, following precautions should be taken;
Prophylactic antibiotics to prevent any super added infection.
tablets to prevent clot formation during flight of long duration.
Antiseptic dressing should be changed every two days.
Passive exercise duration your journey
Hope information I provided to you will be beneficial to you