Patients with orthoses may still need to wear stability trainers!
In many instances, patients who have abnormal pronation (excessive collapse of their arch) require stability shoes in combination with orthoses. The force that causes the shoe to collapse and distort as a result of pronation persists even when orthoses are worn, so both may be required.
Imagine standing in orthoses on a stable surface and then compare this to standing whilst on a bed! Obviously, the bed prevents many of the positive effects from the orthoses in the same way that some unstable neutral trainers do.
The London Podiatry Centre will provide highly specific advice on which shoe is ideal for each patient. In light runners, a neutral shoe might be sufficient with an orthotic, whereas in some cases, the correct shoe alone will manage function correctly.