Anterior lateral (quadrant) impingment of the ankle:
If pain is principally presenting in dorsiflexion /forced dorsiflexin, use posterior talar glides (talar rock) as part of therapy to restore mechanics: patient sits legs dangling over bed (knee bent 90), PT hands either side below maleoli, fingers around calaneus, thumbs on anterior talus; posterior glide on talus as rhythmically swings pt's foot and ankle backwards (thus flexing knee and dorsiflexing ankle). Also, need to look at the function of tibialis posterior, and factors affecting excessive pronation /inversion in weight-bearing.
If inversion /supination is the principal provoker, use Mulligan's MWM of posterior glide of distal fibula with pt's active supination /inversion, and Mulligan's taping technique.
In my opinion, the distal tib-fib joint is damaged in most "ankle sprains", therefore tape this with a simple circumferential tape at the malleoli.
If there is structural instability, that has to be placated before resolution of impingement issues can be achieved - not really any different from the shoulder or anywhere else.
Dynamic stability (in appropraite position) must be re-educated, even after a minor "sprain".