Weak Link testingThe aim of Weak Link testing is to identify weaknesses in the kinetic chains and to identify impairments in the interplay between the deep stabilizing muscles and the superficial prime movers. In Weak Link testing the body is challenged in different body-weight-bearing positions. The therapist compares the patient’s left and right side (figure 5). A Weak Link test is positive if: 1. There is an observable difference in performance between the right and the left side of the body, 2. Pain is provoked, 3. There is impaired performance on both sides compared to an expected level. Point 1 and 3 are clinically evaluated by the therapist.