Posterior ankle impingement syndrome: A systematic four-stage approach

Table 2 Reported clinical outcomes following hindfoot arthroscopy

Ref.	Year	No. of cases (n)	LoE	Follow-up (mo)	Primary outcome measure	Pre-operative score	Post-operative score	Return to sport (wk)
Jerosch et al[32]	2006	10	IV	28 (6-61)	AOFAS	43	87	12
Tey et al[33]	2007	15	IV	3 (15-63)	AOFAS	84.4	98.5	14.1
Horibe et al[34]	2008	11	IV	33.8 (12-58)	AOFAS	71	99	12
Scholten et al[28]	2008	55	IV	38 (24-54)	AOFAS	71.1	90	18.9
Willits et al[31]	2008	16	IV	3 (6-74)	AOFAS	N/A	91	63
Calder et al[35]	2010	27	IV	23 (15-49)	N/A	N/A	N/A	5.9
Noguchi et al[36]	2010	12	IV	9.7 (6-14)	AOFAS	68	98.3	5.9
Galla et al[37]	2011	30	IV	9.7 (6-14)	AOFAS	60	90	N/A
Ogut et al[38]	2011	14	IV	31.6 (8-75)	AOFAS	53.6	84.2	30.6
Nikisch et al[39]	2012	80	IV	15.4 (5-59)	N/A	N/A	N/A	N/A
van Dijk et al[29]	2009	55	IV	90 (24-480)	AOFAS	75	90	N/A
Lopez-Valerio et al[40]	2015	20	IV	78.6 (24-120)	VAS	7.5	0.8	6.7
Dinato et al[41]	2015	17	III	N/A	AOFAS	62.9	92.3	15.6
		15				67.9	94	16.3

AOFAS: American Orthopedic Foot and Ankle Society (AOFAS) Score; VAS: Visual Analogue Scale; N/A: Not applicable.