Table 2.

Outcome of UBC stratified by the treatment modalities

Treatment modality	n = UBC	Treatment outcome		Reference articles
		Success	Failure
Injection (MPA)	1,128	806	322	[6, 12, 14, 16, 19, 22, 25–29, 33, 37–39, 41, 44, 47, 50, 55, 64, 66]
Injection (bone marrow)	114	88	26	[19, 26, 38–40, 45]
Injection (bone marrow + DBM)	85	73	12	[15, 21, 33, 45]
Injection (MPA + bone marrow)	9	3	6	[23]
Injection (bone marrow + MPA + DBM)	34	17	17	[37]
Only curettage	31	16	15	[9, 18, 38, 43, 46, 47]
Curettage with allograft	353	271	82	[8, 9, 14, 25, 27, 29, 35, 37, 53, 57–60]
Curettage with allograft + bone marrow	23	21	2	[56]
Curettage with autograft	128	96	32	[9, 14, 19, 25, 27, 36, 43, 46, 47, 58, 59]
Curettage with allograft + autograft	3	3	0	[14, 59]
Curettage with pellets	115	104	11	[19, 23, 24, 42, 47, 48, 59, 63]
Curettage with hydroxyapetite	25	22	3	[47, 48]
Curettage with ceramic	12	12	0	[8]
Curettage + Zinc cauterization of the cyst	9	8	1	[43]
Curettage with osteoset pellets + autograft	1	1	0	[59]
Curettage with myoplasty	35	32	3	[10]
Curettage with bone graft + Kuntcher stabilization (rinsing the cyst cavity with peroxide)	12	9	3	[64]
Curettage with bone graft + plate stabilization	10	9	1	[66]
Curettage with pellets + plate stabilization	7	6	1	[23]
Minimal invasive curettage + ethanol cauterization + calcium sulfate pellet + cannulated screw	12	11	1	[23]
Curettage + autograft + allograft with IM nail stabilization	19	11	8	[51]
Papers with different surgical techniquesa	528	426	102	[3, 12, 13, 17, 18, 28, 34, 52, 62, 64]
Cyst excision	83	76	7	[9, 14, 36, 54, 65, 66]
Cyst wall trepanation	26	26	0	[9, 49]
IM nail without curettage	205	196	9	[11, 16, 19, 20, 30–32, 67]
Continuous decompression with cannulated screws	61	47	14	[13, 29, 61]
Conservative treatment	149	58	91	[9, 12, 13, 36, 44, 47, 52, 58–60, 66]
Overall number of cysts	3,217	2,448	769

^aThese papers were not included in the subcategories for treatment modalities, because healing classification was not stratified based on the treatment