Gravity position to prevent facial edema in hair transplantation

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Figure 1. Gravity position: keeping supine or lateral decubitus position, not in prone position.
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Figure 2. If the anterior hairline is much superior to the shingle point, head elevation at a slight degree cannot cause lymphatic fluid to move to the forehead. The red arrow indicates the movement of lymphatic fluid.
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Figure 3. If the anterior hairline is inferior to the shingle point or around the shingle point, slight head elevation can allow the lymphatic fluid’s movement to the forehead due to gravity. The red arrow indicates the movement of lymphatic fluid.

Table 1. Comparison of Severity of Facial Edema According to the Patient’s Compliance

Patient’s Compliance	Severity of Edema (Number of Patients [%])				Total
	Grade 0	Grade I	Grade II	Grade III
Good	940 (97.1)	28 (2.9)	—	—	968 (80.7)
Average	176 (92.6)	13 (6.9)	1 (0.5)	—	190 (15.8)
Poor	18 (42.9)	14 (33.3)	7 (16.7)	3 (7.1)	42 (3.5)
Total	1,134 (94.5)	55 (4.6)	8 (0.7)	3 (0.2)	1,200 (100)