Thank you, Carl. As Carl indicated, consolidated total revenue for the 3 months ended September 30, 2017 was $19.8 million compared to $23.1 million of revenue for the same period of 2016, a decline of 14%. For the 9 months ended September 30, 2017, revenue was $63.3 million, a 3% decrease compared to $65.5 million reported for the first 9 months of 2016. As Carl has related, the decline in sales year-over-year as a result of transitioning to collaborative, profitable distributor relationships by reducing sales volume in unprofitable sales distribution channels with high commission structures and reducing -- also reducing channel conflict. There is also 1 less day sales in the 3 months ended September 30, 2017 than in the prior year. Consolidated gross profit for the third quarter of 2017 was $11.4 million or 57.5% of revenue compared to gross profit of $16 million or 69.2% of revenues for the third quarter of 2016. For the 9 months ended September 30, 2017, gross profit was $39.8 million or 62.9% of revenue compared to $44.8 million or 68.3% of revenue. As Carl previously mentioned, a change in sales mix toward Biologics, which carries a lower margin than fixation products, impacted the gross margins. In addition, increases in inventory and surgical instrument reserves in the quarter ended September 30, 2017 of $1.1 million based on current estimates of missing or damaged parts, primarily on consignment and a onetime charge of $900,000 in inventory and surgical instrument reserves related to litigation with the distributor, reduced gross margin for the quarter and 9 months ended September 30, 2017.
Operating expenses for the quarter were $14.9 million, a decline of $3 million from the prior year. Operating expenses for the 9 months ended September 30, 2017 were $50.6 million compared to $51.2 million in 2016. When considering the core operating expenses of general and administrative sales and marketing and research and development, these expenses as a percentage of sales were 64.4% in the third quarter compared to 69% in the comparable quarter of the prior year. The reduction in the expenses is primarily attributable to lower commission expense as a direct result of the company moving away from unprofitable sales distributor arrangements with high commission rates. In addition, the company has continued to execute on its cost reduction initiatives in realizing merger synergies in its 2015 acquisition of X-spine, resulting in lower payroll and related expenses such as benefit and travel cost and lower overall operating expenses.
Operating expenses would have been lower, excluding a one-time charge of $400,000 in reserves related to net receivables from a distributor with which the company is engaged in litigation. Separation-related expense in the third quarter was $0.8 million, representing the cost associated with headcount reductions in the quarter. Year-to-date, separation expense is $1.4 million. As previously noted, the reduction in personnel relates to restructuring the company for profitable operations, is a key factor in the reduction of operating expenses for the third quarter and year-to-date.
In 2016, Xtant recognized acquisition and integration expense related to the July 2015 acquisition of X-spine in the amount of $517,000 in the 3 months and $1,270,000 for the 9 months ended September 30, 2016. Similar expenses were not incurred in 2017. The company defines EBITDA, as earnings before interest, taxes, depreciation and amortization, nonrecurring expenses and non-cash stock-based compensation. EBITDA for the third quarter of 2017 was $1.4 million compared to $672,000 for the same period during 2016. The improvement in the third quarter EBITDA is result of a change in the company's sales strategy towards profitable distributor relationships coupled with expense reductions in commission and payroll related expenses. For the 9 months ended September 30, 2017, EBITDA was a negative $784,000 compared to $700,000 last year, reflecting low margin performance, a higher commission cost structure earlier in the year and higher insurance professional fees and employee benefits in the first half of fiscal 2017. The company reported the third quarter 2017 loss from operations of $8.5 million compared to a loss from operations of $4.9 million in the comparable period last year. The 9-month year-to-date loss is $24 million compared to a loss of $15 million in the prior year. Of particular note, one-time reserves of $1.3 million were recorded against the company's net assets, due from or in the possession of a distributor in litigation with the company, which commenced in the third quarter. Xtant filed a motion to dismiss this case on September 15, 2017 and is awaiting the court's ruling. Interest expense of $3.8 million for the third quarter and $10.5 million in the 9 months ended September 30, 2017 increased $600,000 and $1.6 million over the comparable periods in the prior year.
Other expense of $1.2 million for the third quarter and $2.8 million for the 9 months ended September 30, 2017, is comprised primarily of restructuring charges for legal and professional fees related to the company's turnaround strategy.
On Monday, November 20, 2017, the company filed a Form 8-K that stated the company's unaudited financial statements for the quarter ended March 31, 2017 and June 30, 2017 should no longer be relied upon because of an error in the quarter ended March 31, 2017 first quarter, pertaining to accumulated depreciation on surgical instruments as of that date. Correcting the error requires a decrease in property and equipment net in the amount of $618,000 and the related increase in cost of goods sold. All such corrections have been properly accounted for in the third quarter 2017 press release and in the Form 10-Q filed yesterday. The company plans to restate the first and second quarter Form 10-Q reports as soon as possible. We refer you to the Form 8-K filing for further information. With respect to our liquidity position at September 30, 2017, we had $2.1 million of cash and cash equivalents, $14 million of net accounts receivable and $24.9 million of inventory.
As of today, the company has approximately $2.1 million of funds available to draw down on its delayed draw term loan with Orbimed. Xtant has reduced its account payable from $10.5 million at the prior year-end to $7.4 million as of September 30, 2017. Accrued liabilities of $13.4 million at September 30 rose from $9 million at December 31, 2016, primarily due to the accumulation of accrued interest on Xtant's debt, the payment of which has been delayed as noted in recent amendments of the company's long-term debt agreements. Total liabilities include approximately $70.8 million of convertible debt and $65.6 million under its debt agreements. Our debt agreements include a revenue covenant requiring the company to achieve minimum revenue benchmarks on a calendar quarter basis. A waiver was obtained from the lenders for not achieving the minimum revenue covenant for the third quarter ended September 30, 2017. The minimum revenue covenant is $27.5 million for the fourth quarter ended December 31, 2017. The company does not anticipate achieving this minimum revenue covenant and that does not assure the lenders will provide a waiver of this anticipated covenant violation at this future date. We have classified this debt as a current liability in the September 30, 2017 balance sheet and are in discussions with the lenders to obtain a waiver of this covenant for the fourth quarter. Now I would like to turn the call back to Carl for summary comments.