Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2022

Summary of Significant Accounting Policies

Summary of reconciliation of cash and restricted cash included in the consolidated balance sheets

The following table provides a reconciliation of cash and restricted cash included in the condensed consolidated balance sheets to the amounts included in the statements of cash flows (in thousands).

	March 31,
	2022		2021
Cash	$	22,066	$	30,410
Restricted cash		109		91
Total cash and restricted cash shown in statements of cash flows	$	22,175	$	30,501

Summary of estimated useful lives of the assets

Processing and research equipment	5 to 10 years
Office equipment and furniture	3 to 5 years
Computer hardware and software	3 years

Schedule of largest customers as well as their respective percentage of total accounts receivable

	Three Months Ended
	March 31,
	2022	2021
Percent of revenues derived from:
Medtronic Sofamor Danek USA	-	22%
Surgalign Holdings	10%	10%

	March 31,	December 31,
	2022	2021
Percent of accounts receivable derived from:
Surgalign Holdings	11%	12%