Impact of Sagittal Balance on Clinical Outcomes in Surgically Treated T12 and L1 Burst Fractures: Analysis of Long-Term Outcomes after Posterior-Only and Combined Posteroanterior Treatment

Table 3

Radiographic measurement outcomes.

	All patients	POST-I group	PA-F group	Intergroup analysis; level of significance
	()	()	()
	mean ± SD	mean ± SD	mean ± SD
	(range)	(range)	(range)
Radiographic parameters
RKA preop°
	(2–25)	(2–25)	(2.5–22.6)
RKA at follow-up°
	(0.8–35.8)	(2.3–35.8)	(0.8–16.1)
TLA (T10–L2) preop°
	(0.2–21.8)	(0.2–21.8)	(2–20.3)
TLA (T10–L2)
at follow-up°	(1.8–37.1)	(2.2–37.1)	(1.8–27.2)
Spinal and spinopelvic parameters at follow-up
PI°
	(31.5–74.7)	(39.7–74.7)	(31.5–68)
PT°
	(2.3–32)	(6.7–32)	(2.3–29.2)
SS°
	(27.2–60.4)	(27.2–50.2)	(29.6–60.4)
TLSL T12–S1°
	(−65.1–(25.9))	(−62.7–(−25.9))	(−65.1–(−28.9))
LSL L1–S1°
	(−70.5–47.2)	(−66.9–(−20.5))	(−70.5–47.2)
LL L1–L5°
	(−58.3–(−11.4))	(−58.3–(−11.4))	(−53–(−26))
TK T4–T12°
	(1.8–77.5)	(1.8–58.6)	(2–77.5)
PR-S1°
	(−52.1–40)	(−47.2–(−14.6))	(−52.1–40)
PR-T10°
	(−93.5–77.6)	(−93.5–77.6)	(−89.9–(−45.5))
PR-L2°
	(−97.4–(−64.1))	(−95.2–(−66.8))	(−97.4–(−64.1))
SVA T4–S1 (mm)
	(−54.8–13.9)	(−54.8–13.9)	(−51.3–0)

RKA: regional kyphosis angle; TLA (T10–L2): thoracolumbar junction angle T10–L2; PI: pelvic incidence; PT: pelvic tilt; SS: sacral slope; TLSL T12–S1: thoracolumbosacral lordosis T12–S1; LSL L1–S1: lumbosacral lordosis L1–S1; LL L1–L5: lumbar lordosis L1–L5; TK T4–T12: thoracic kyphosis T4–T12; PR-S1: pelvic radius to S1; PR-T10: total lumbopelvic lordosis to T10; PR-L2: regional lumbopelvic lordosis to L2; SVA T4–S1: sagittal vertical axis T4 to S1.