All fitness, performance, and rehabilitation programs should start with an assessment. The goal of assessment is to refine exercise and technique recommendations, with the intent of improving client or patient outcomes. This is an advanced course on the interpretation of clusters or patterns of the signs identified during the Overhead Squat Assessment (a.k.a OSA, OHSA, squat assessment, overhead squat, and similar to the deep squat of the Functional Movement Screen). This course builds on the concepts in previous courses: Overhead Squat Assessment: Introduction and Overhead Squat Assessment: Signs of Dysfunction If you use the OHSA in practice, you have probably noticed it is very rare that an individual presents with a single "sign" of dysfunction. If you look closely at the tables in the article Overhead Squat Assessment: Signs of Dysfunction , you will note that many of the same muscles continue to appear, exhibiting the same changes in activity and length, throughout multiple signs/tables. This is especially true of signs related to the same joint or proximal joints (for example, "feet flatten ," "feet turn-out ," "knees bow in ," etc). This repetition gives inference to signs being related to one another, resulting in "sign clusters," and these clusters are likely representative of compensation patterns. In fact, practice may highlight that dysfunction most often presents in patterns. Fortunately, these patterns are repetitive, predictable, and easily categorized into a few over-arching models of postural dysfunction/movement impairment.