Hiya mate...
Sounds a lot like my athletes in whom we correct imbalances, both unilateral (strength - VMO-VLO) and bilateral, not to mention in different planes.
Looks a straight-forward case but I'd refrain from suggesting corrective measures, without an examination - lest we want to worsen the condition.
Cheers...
Next Steps
Need to get yourself examined - preferably by a sports medicine doc (not an orthopod!) or a strength and conditioning coach (not a personal trainer!).
Health Tips
Cryotherapy (ice bath, a-la CrossFit!) isn't always a great tool...for recovery. Much of its benefits are due to the placebo effect.
You'd need to look at what you eating as well. Nothing helps recovery better than the right kind of nutrition (geared towards your fitness goals!) and of course, rest.
Plus, you need to look at your exercise regimen as well.. Doing 'volume work' all year around is a sure recipe for overtraining, fatigue, and increased risk of inquiry potential. You need to be especially wary if you are an athlete and are in season plus indulging in resistance training... if you don't refuel properly, you stand to lose a lot.
Hope that helps!