#1	explode "recurrent‐shoulder‐dislocation" / all SUBHEADINGS in DEM,DER,DRM,DRR
#2	explode "shoulder‐dislocation" / all SUBHEADINGS in DEM,DER,DRM,DRR
#3	(shoulder or glenohumeral) near (dislocat* or displac* or wrench* or sprain* or subluxat* or abarticulat*)
#4	(shoulder or glenohumeral) and (dislocat* or displac* or wrench* or sprain* or subluxat* or abarticulat*)
#5	explode Shoulder/ all subheadings
#6	shoulder near (trauma or injury)
#7	shoulder and (trauma or injury)
#8	shoulder in TI, AB
#9	#1 or #2 or #3 or #4 or #5 or #6 or #7 or #8
#10	explode Lidocaine/ all subheadings
#11	lignocain* or lidocain*
#12	"injection‐" / all SUBHEADINGS in DEM,DER,DRM,DRR
#13	Intra?Articular and (injection* or administration*)
#14	Intra?Articular near (injection* or administration*)
#15	injection*
#16	#10 or #11 or #12 or #13 or #14 or #15
#17	#9 and #16
#18	explode "randomized‐controlled‐trial" / all SUBHEADINGS in DEM,DER,DRM,DRR
#19	(randomi?ed controlled trial*) in TI, AB
#20	random*
#21	explode "randomization‐" / all SUBHEADINGS in DEM,DER,DRM,DRR
#22	randomi?ation
#23	explode "clinical‐trial" / all SUBHEADINGS in DEM,DER,DRM,DRR
#24	explode multicenter‐study / all subheadings
#25	multi?cent*
#26	explode phase‐4‐clinical‐trial / all subheadings or explode double‐blind‐procedure / all subheadings or explode single‐blind‐procedure / all subheadings
#27	(RANDOM* or CROSS?OVER* or FACTORIAL* or PLACEBO* or VOLUNTEER*) in TI, AB, TW
#28	((SINGL* or DOUBL* or TREBL* or TRIPL*) near (BLIND* or MASK*)) in TI,AB
#29	explode "follow‐up" / all SUBHEADINGS in DEM,DER,DRM,DRR
#30	(follow?up near stud*) in TI, AB
#31	evaluation stud*
#32	explode "prospective‐study" / all SUBHEADINGS in DEM,DER,DRM,DRR
#33	prospective?stud*
#34	research near design*
#35	explode "comparative‐study" / all SUBHEADINGS in DEM,DER,DRM,DRR
#36	clinic* near trial*
#37	#18 or #19 or #20 or #21 or #20 or #22 or #23 or #24 or #25 or #26 or #27 or #28 or #29 or #30 or #31 or #32 or #33 or #34 or #35 or #36
#38	(human) in DER
#39	(animal or nonhuman) in DER
#40	#38 and #39
#41	#39 not #40
#42	#37 not #41
#43	#17 and #42