Glenn Boehnlein
Vice President, Chief Financial Officer at Stryker
Thanks, Jason. Today I will focus my comments on our second-quarter financial results and the related drivers. Our detailed financial results have been provided in today's press release. Our organic sales growth was 11.9% in the quarter. The second quarter's average selling days were in line with 2022. The impact from pricing in the quarter was favorable by 0.5%. We continue to see a positive trend from our pricing initiatives, particularly in our US MedSurg and neurotech businesses, all of which contributed positive pricing for the quarter.
Foreign currency had a 0.7% unfavorable impact on sales. In quarter US organic sales growth was 12%, international organic sales growth was 11.4%, impacted by positive sales momentum across most of our international markets, particularly Australia, Canada, Europe, and most of our emerging markets. Our adjusted EPS of $2.54 in the quarter was up 12.9% from 2022, driven by higher sales and operating margin expansion, partially offset by a higher adjusted income tax rate and the impact of foreign currency exchange, which was unfavorable $0.03.
Now, I will provide some highlights around our quarterly segment performance. In the quarter MedSurg and Neurotechnology had both constant-currency and organic sales growth of 12.9%, which included 13.5% of US organic growth and 10.9% of international organic growth. Instruments had US organic sales growth of 12.9% led by strong double-digit growth in the Surgical Technology business. From a product perspective, sales growth was led by power tools, waste management, smoke evacuation, and surge account. Endoscopy had US organic sales growth of 3.5% against a strong comparable. This included strong growth in its ProCare sustainability and sports medicine businesses.
The Endoscopy business completed its limited launch of the 1788 camera late in the second quarter. Consistent with prior camera launches and the related transition period between the legacy camera and the new camera this also contributed to muted growth in Q2. Medical had US organic sales growth of 27.2%, reflecting very strong performances in all three of its businesses, acute-care, emergency care, and Sage and benefited from continued improvement in product supply during the quarter.
Neurovascular had US organic sales growth of 9%, reflecting a strong performance in our hemorrhagic business. Neurocranial had US organic sales growth of 9.6% which included double-digit growth in our bone mill bipolar forceps and Max space product lines. Internationally MedSurg and Neurotechnology had organic sales growth of 10.9% reflecting double-digit growth in our Medical and neurocranial businesses. Geographically, this included strong performances in Europe, Australia, and Canada.
Neurovascular's growth continues to be negatively impacted by VBP in China. Orthopedics and Spine had both constant-currency and organic sales growth of 10.6% which included organic growth of 10% in the US and 12.1% internationally. Our US knee business grew 10.6% organically which reflects our market-leading position in robotic-assisted knee procedures. Our US hip business grew 8.8% organically reflecting strong primary hip growth fueled by our Insignia Hip Stem and continued procedural growth.
Our US trauma and Extremities business grew 14.3% organically with strong performances across all businesses led by very strong growth in upper extremities and foot and ankle. Our US spine business grew 5.2%, led by the performance of our enabling technology and Interventional Spine businesses including the recently launched Q Guidance navigation system. Our US other Ortho declined organically 1.6%, primarily driven by the impact of deal mix changes, specifically more rentals related to Mako installations in the quarter.
Internationally Orthopaedics and Spine grew 12.1% organically, including strong performances in Australia, Canada, and most emerging markets. Now, I will focus on operating highlights in the quarter. Our adjusted gross margin of 63.9% was favorable, approximately 60 basis-points from the second-quarter 2022 and 70 basis-points sequentially compared to Q1 2023. This change was primarily driven by the slight easing of certain cost pressures, decreases in spot by purchasing, improved productivity and the benefit of price, partially offset by the impact of foreign currency exchange.
Adjusted R&D spending was 6.4% of sales, which represents an 80 basis-points decrease from the second-quarter of 2022, due primarily to a higher comparable in 2022 related to the ramping of costs for product launches. Our adjusted SG&A was 33.1% of sales, which was 70 basis points higher than the second-quarter 2022 due to a disciplined ramp of spend and investment to support our growth. We expect our full-year SG&A as a percent of sales to be in line with 2019 levels as we continue to invest for growth.
In summary for the quarter, our adjusted operating margin was 24.3% of sales, which was approximately 60 basis points favorable to the second-quarter of 2022. This performance is primarily driven by the aforementioned easing of certain cost pressures primarily on gross margins. Adjusted other income and expense of $66 million for the quarter was slightly higher than 2022, driven by increased interest expense. The second quarter of 2023 had an adjusted effective tax rate of 15 [technical issue] to be in the range of 14% to 15%. Focusing on the balance sheet, we ended the second-quarter with $1.5 billion of cash and marketable securities and total debt of $12.9 billion, approximately $100 million of the term-loan debt was paid down in the quarter, reflecting year-to-date payments of $200 million and the remaining balance of $650 million.
Turning to cash flow, our year-to-date cash from operations is $1.1 billion. This performance reflects the results of net earnings and higher accounts receivable collections. Considering our year-to-date results our strong backlog for capital equipment and continued positive procedural trends we now expect full-year 2023 organic sales growth to be in the range of 9.5% to 10.5% with pricing to be slightly positive for the year. If foreign currency exchange rates hold near current levels, we anticipate sales will be unfavorably impacted by approximately 0.3% and adjusted EPS will be unfavorably impacted from $0.05 to $0.10 per share for the full-year, both of which are included in our guidance.
Based on our performance in the first half of the year, together with our strong sales momentum we now expect adjusted earnings per share to be in the range of $10.25 to $10.45 per share and now I will open up the call for Q&A.