Table 2.

Findings of various distances from the tip of the fibular head (F), to the posterior border of the biceps femoris where the peroneal nerve crosses (B) and the posterior border of the fibular neck where the peroneal nerve crosses (N), and the area of the triangle FBN

	Degrees of knee flexion	No.	Mean (95% CI)
Distance FN (mm)	0	12	19.8 (17.5–22.2)
	30	12	21.7 (19.3–24.1)
	60	12	22.7 (20.0–25.4)
	90	12	20.1 (18.3–21.8)
	120	12	19.3 (17.0–21.5)
	–	60	20.7 (19.7–21.7)
Distance FB (mm)	0	12	57.9 (48.0–67.9)
	30	12	62.3 (55.0–69.7)
	60	12	59.5 (49.6–69.4)
	90	12	48.1 (40.5–55.7)
	120	12	37.8 (31.0–44.7)
	–	60	53.1 (49.1–57.2)
Distance BN (mm)	0	12	72.8 (61.6–84.0)
	30	12	76.1 (67.9–84.4)
	60	12	69.2 (59.8–78.49)
	90	12	52.2 (46.0–58.5)
	120	12	31.8 (27.2–36.4)
	–	60	60.4 (55.1–65.8)
Area FBN (mm2)	0	10	423.5 (252.9–594.1)
	30	12	530.5 (407.1–653.8)
	60	12	621.2 (468.4–774.1)
	90	12	466.6 (362.3–570.8)
	120	12	296.3 (229.8–362.8)
	–	58	469.1 (412.1–526.2)