Table 2.

Treatment sites for thread-embedding acupuncture in the dorsal area of the human body

	Localization
	Muscle	Skeleton	Direction of insertion	Needle length	Number of pieces inserted
➀	Intrinsic muscle (spinalis, rotatores)	L3–4, L4–5, L5–S1	Perpendicular insertion	40 mm	6 pieces
➁	Multifidus muscle	L4–5	Oblique insertion	60 mm	2 pieces
➂	Lumbar erector spinae	Sacrum–L5, L3–L1	Transverse insertion	60 mm	4 pieces
➃	Iliolumbar ligament	L5–iliac crest	Oblique insertion	60 mm	2 pieces
➄	Sacroiliac ligament	Posterior inferior iliac spine–coccyx	Oblique insertion	60 mm	2 pieces
➅	Gluteus medius	–	Transverse insertion	40 mm	2 pieces
➆	Piriformis	–	Perpendicular insertion	60 mm	2 pieces
➇	Thoracic vertebrae erector spinae	T7–10	Transverse insertion	60 mm	2 pieces
➈	Thoracic vertebrae erector spinae	T3–5	Transverse insertion	60 mm	2 pieces
➉	Trapezius, levator scapulae	C7	Transverse insertion	60 mm	2 pieces
⑪	Cervical vertebrae erector spinae	C4–7	Transverse insertion	40 mm	2 pieces
Total					28 pieces