Final answer:
Scapular adduction (retraction) with fair muscle strength. It involves the glenoid cavity moving downward and the medial end of the scapular spine moving upward. A fair muscle strength grade for scapular adduction would mean that the movement is performed with average strength and control.
Step-by-step explanation:
Scapular adduction, also known as scapular retraction, refers to the posterior movement of the scapula toward the spine. It involves the glenoid cavity moving downward and the medial end of the scapular spine moving upward. A fair muscle strength grade for scapular adduction would mean that the movement is performed with average strength and control. Muscle strength grading systems can vary, but typically, "fair" muscle strength in scapular adduction (retraction) may be indicated by a grade of 3/5 on the Medical Research Council (MRC) scale or a similar muscle strength grading scale.
In this context, "fair" suggests that the muscle can complete its function, but with effort and against some resistance. It is important to note that specific grading systems and terminology can differ among healthcare professionals and institutions, so it's essential to be consistent with the grading system in use.
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