Could I have a partial ACL tear if my knee wants to buckle to one side?

Hard to judge. Buckling to one side does not sound as much like an acl injury. It sounds more like an mcl or lcl injury depending on which side it is buckling on. The acl is more involved in a rotational pivoting restraint than a buckling one.

Related Questions

Could I have partial ACL tear if my knee tries to buckle to one side?

Hard to judge. Buckling to one side does not sound as much like an acl injury. It sounds more like an mcl or lcl injury depending on which side it is buckling on. The acl is more involved in a rotational pivoting restraint than a buckling one.
Partial acl. Your knee could have an acl tear or a collateral ligament tear. Get a MRI to confirm.
Knee buckles. Consider acl tear, meniscal tear, collateral ligament tear, PCL tear, or loose body.
Not likely. If your knee is buckling, it may be a complete ACL tear. Partial ACL tears are not common. See an orthopedic sports medicine knee surgeon, who can sort out your symptoms.