Final answer:
The suprascapular nerve indeed enters the supraspinous fossa through the scapular notch, situated above the superior transverse scapular ligament, making the statement true.
Step-by-step explanation:
The statement that the suprascapular nerve enters the supraspinous fossa through the scapular notch above the superior transverse scapular ligament is True.
The suprascapular notch is a small feature located along the superior border of the scapula, medial to the coracoid process.
It is overarched by the superior transverse scapular ligament, under which the suprascapular nerve passes to enter the supraspinous fossa, a narrow depression located on the posterior aspect of the scapula, superior to the spine. This fossa provides a large area for the attachment of the supraspinatus muscle, which crosses the shoulder joint to act on the humerus.