Surgical interventions for Bertolotti’s syndrome: case report and review of unsatisfactory cases in the literature

Table 2 Reported unsatisfactory cases of Bertolli’s syndrome

Number of unsatisfactory cases/total cases	Intervention	Average age (y)	Type of LSTV	Neoarthrosis side (Uni- or Bilateral)	Response to local anesthesia	Outcome scale	Evaluation^a			References
Number of unsatisfactory cases/total cases	Intervention	Average age (y)	Type of LSTV	Neoarthrosis side (Uni- or Bilateral)	Response to local anesthesia	Outcome scale	E/G	F	P	References
4/14	Endoscopic decompression	59.5	–	–	Yes	VAS, ODI, MacNab	10	3	1	Heo (2019) [16]
2/11 4/8 8/61	OMRDP	38.6 34.4 55.9	II(A) II(A) I–III	Uni Uni Uni: 12, Bi: 40	Yes Yes: 2, No:2 No, in 2 fair cases	– ODI VAS, MacNab	9 4 53	0 3 6	2 1 2	Jönsson (1989) [14]; Santavirta (1993) [12]; Ju (2017) [13]
2/8	Fusion	32.6	II(A): 7 III(B): 1	Uni: 7 Bi: 1	–	–	6	0	2	Santavirta (1993) [12]

LSTV lumbosacral transitional vertebrae, VAS visual analog scale, ODI Oswestry Disability Index, OMRDP open microscopic, articulation resection or nerve decompression via posterior approach
^aEvaluation of outcomes are classified into excellent (E)/good (G), fair (F), and poor (P)

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