Although your principal muscle agonist may be strong, most of the times the smaller stabilizing muscle might not sustain the movement, leading to unhealthy patterns.
In other cases previous injuries might not be recovered fully, leaving you with muscle unbalance.
Clinical strengthening is a program of exercises that will target your weaknesses.
A functional assessment before addressing a program
A discussion of what are your goals and how can we achieve them.
A series of exercises based on your characteristics
A periodic re-assessment of your status
Reduced risk of injury