Table 1 Description of the studies identified utilising ultrasonography to assess joints in a cohort with osteoarthritis

First author (reference no)	Year	No with osteoarthritis	Definition of osteoarthritis cohort described	Comparator group examined	Joint region imaged	Doppler
Fam3	1982	50	U	Y	Knee	N
Aisen4	1984	7	N	Y	Knee	N
Baratelli5	1986	16	N	Y	Hip	N
McCune6	1990	9	N	Y	Knee	N
Iagnooco7	1992	60	U	Y	Knee	N
Jonsson8	1992	6	N	Y	Knee, hip	N
Martino9	1993	18	N	Y	Knee	N
Lennox10	1994	25	N	Y	Knee	N
Ostergaard11	1995	2	N	Y	Knee	N
Arslan12	1999	10	N	Y	SI joint	P
Monteforte13	1999	126	Y	Y	Knee	N
Baratto14	2000	10	N	N	C spine	N
Iagnocco15	2000	57	Y	Y	Hand	N
Schmidt16	2000	10	Y	Y	Knee	C
Giovagnorio17	2001	2	Y	Y	Knee	P
Qvistgaard18	2001	41	Y	N	Knee, hip	N
Reardon19	2001	12	N	Y	Hip	N
Walther20	2001	13	N	Y	Knee	P
Falsetti21	2002	100	N	Y	Shoulder	N
Walther22	2002	24	U	Y	Hip	P
Falsetti23	2003	265	U	Y	Foot	N
Filippucci24	2003	2	N	Y	Hand, knee, foot	N
Monteforte25	2003	14	N	N	C spine	N
Tarhan26	2003	58	Y	Y	Knee	N
Karim27	2004	19	N	Y	Knee	N
D’Agostino28	2005	600	Y	N	Knee	N
Iagnocco29	2005	110	U	N	Hand	N
Naredo30	2005	90	Y	Y	Knee	N
Pourbagher31	2005	10	N	N	Hip	N
Yoon32	2005	26	N	N	Knee	P
Acebes33	2006	30	N	N	Knee	N
de Miguel Mendieta34	2006	101	Y	N	Knee	N
Jan35	2006	36	Y	N	Knee	N
Jung36	2006	51	Y	N	Knee	N
Kristoffersen37	2006	71	Y	Y	Knee	C
Mandl38	2006	32	Y	Y	Hand	N
Qvistgaard39	2006	100	Y	N	Hip	N
Su40	2006	18	N	N	Hip	N
Tarasevicius41	2006	33	N	N	Hip	N
Altinel42	2007	61	U	N	Knee	N
Atchia43	2007	10	N	N	Hip	N
Lee44	2007	42	N	Y	Knee	N
Robinson45	2007	120	U	N	Hip	B
Keen46	2008	37	Y	N	Hand	N
Keen47	2008	7	N	N	Hand	P
Kim48	2008	30	Y	N	Knee	N
Song49	2008	41	Y	Y	Knee	P

Including study details, the joint region scanned and whether information regarding the image acquisition, definition of pathology and scoring system were described. B, both colour and power Doppler; C, colour Doppler; C spine, cervical spine; E, described elsewhere; N, no; P, power Doppler; SI, sacroiliac; U, unclear; Y, yes.