Instagram (N= 212)	Instagram (%)	Twitter (N=237)	Twitter (%)	P value
Type of Source
Company	18	8.49%	106	44.73%	< .001
Health Profession Student	6	2.83%	1	0.42%	.06
Hospital	1	0.47%	8	3.38%	.04
Physician	87	41.04%	41	17.30%	< .001
Medical Organization	1	0.47%	5	2.11%	.22
Medical School	3	1.42%	3	1.27%	1.00
Orthopaedic Journal	0	0.00%	11	4.64%	.001
Orthopaedic Practice	57	26.89%	43	18.14%	.03
Patient Case	8	3.77%	3	1.27%	.13
Personal	24	11.32%	16	6.75%	.09
Physician’s Assistant	7	3.30%	0	0.00%	.001