Available range is the range a joint already has, which 📝Articular Mobility moves through and never past.
It sits inside 📝Range of Motion as the usable arc today, not a textbook chart. Forcing past available range is an adjustment-shaped miss this practice does not make. 📝End Range is approached slowly. Sharp or unexplained pain is a stop, not a reason to add degrees.
Clients feel "that's as far as it goes today." More later is possible; more now by force is not the work.