Worldwide orthopaedic research activity 2010-2014: Publication rates in the top 15 orthopaedic journals related to population size and gross domestic product

Table 1 Impact factors (2015 Journal Citation Reports - Thomson Reuters) and number of included publications from 2010-2014

	Journal	Impact points	Publications 2010-2014
1	Journal of Bone and Joint - American Volume	5.280	1833
2	American Journal of Sports Medicine	4.362	1561
3	The Bone and Joint Journal	3.309	1379
4	Arthroscopy – The Journal of Arthroscopic and Related Surgery	3.206	1072
5	Knee Surgery Sports Traumatology Arthroscopy	3.053	1747
6	Journal of Orthopaedic Research	2.986	1301
7	Acta Orthopaedica	2.771	565
8	Clinical Orthopaedics and Related Research	2.765	2027
9	Journal of Arthroplasty	2.666	1873
10	Spine Journal	2.426	1029
11	Spine	2.297	2848
12	Journal of Shoulder and Elbow Surgery	2.289	1324
13	Injury – International Journal of the Care of the Injured	2.137	1133
14	International Orthopaedics	2.110	1477
15	European Spine Journal	2.066	1852
	Total number of publications		23021

Excluded journals: Osteoarthritis Cartilage ( No. 3 - IF: 4.165); Journal of Physiotherapy (No.4 - IF: 3.708); Journal of Orthopaedic Sports Physiotherapy (No. 8 - IF: 3.011); Gait Posture (No. 12 - IF: 2.752); Journal of the American Academy of Orthopaedic Surgeons (No. 14 - IF: 2.527); Physical Therapy (No 15 - IF: 2.526); Clinical Journal Sports Medicine (No 19 - IF: 2.268)