Smith & Nephew Presents Excellent Results for JOURNEY™ II Total Knee at the 2018 American Association of Hip and Knee Surgeons

MEMPHIS, Tenn., Nov. 16, 2018 /PRNewswire/ -- Smith & Nephew (LSE: SN, NYSE: SNN), the global medical technology business, presented a number of compelling clinical outcomes around its flagship JOURNEY II BCS knee earlier this month at the American Association of Hip and Knee Surgeons (AAHKS). The announcement follows more than a dozen publications during the past year from various authors around the globe.^1-14

In one of the largest multi-center retrospective patient cohorts ever studied, new clinical evidence represented excellent mid-term survivorship results on 2,059 patients with JOURNEY II BCS implants including:

• About 1% of patients required major revision out to 6 years.¹⁵
• No major or minor revision of any patient four years or more post-op.¹⁵
• Five year revision rate that was reported as 3.6% compared to 4.1% for the cemented posterior stabilized (PS) class in the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR).¹⁵
• Statistically significantly better survivorship for patients under 55 when compared to the Australian registry class average for the same age group at 6 years. The revision rate was 3% at 5 years for males and 3.1% for females, compared to 7% for males and 6.9% for females reported by the AOANJRR for cemented PS TKAs.¹⁵

These data add to the growing body of evidence that JOURNEY II TKA delivers smoother patient recovery, improved functional outcomes, higher patient satisfaction and healthcare cost-savings when compared with conventional TKAs. ^{1,2,6,7,9,16,17}

"It is very exciting to see additional clinical validation in such a large study showing excellent patient outcomes with our JOURNEY II TKA.  For years we at Smith & Nephew have been discussing the unique benefits of JOURNEY II knees and we are now seeing regular publications highlighting the improved outcomes compared to conventional TKAs.  These better-quality outcomes are a direct benefit to our surgeon customers and most importantly to their patients," said Skip Kiil, President of Global Orthopaedics, Smith & Nephew.

JOURNEY II TKA first launched in late 2011 and now has more than 150,000 procedures performed worldwide.¹⁸

About Smith & Nephew

Smith & Nephew is a global medical technology business dedicated to helping healthcare professionals improve people's lives. With leadership positions in Orthopaedic Reconstruction, Advanced Wound Management, Sports Medicine and Trauma & Extremities, Smith & Nephew has around 15,000 employees and a presence in more than 100 countries. Annual sales in 2017 were almost $4.8 billion. Smith & Nephew is a member of the FTSE100 (LSE:SN, NYSE:SNN).

For more information about Smith & Nephew, please visit our website www.smith-nephew.com, follow @SmithNephewplc on Twitter or visit SmithNephewplc on Facebook.com.

Forward-looking Statements

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References:

1. Nodzo SR, Carroll KM, Mayman DJ. The Bicruciate Substituting Knee Design and Initial Experience. Tech Orthop. 2018;33:37-41.
2. Takubo A, Ryu K, Iriuchishima T, Tokuhashi Y. Comparison of muscle recovery following bicruciate substituting versus posterior stabilized total knee arthroplasty in an Asian population. J Knee Surg. 2017;30:725–729.
3. Snyder M, Sympson A, Gregg J, Levit A. A comparison of patient reported outcomes between total knee arthroplasty patients receiving the Journey II bi-cruciate stabilizing knee system and total hip arthroplasty patients. Ortop Travmatol Protez. 2018;3:5-10.
4. Christen B, Kopjar B. Second-generation bi-cruciate stabilized total knee system has a lower reoperation and revision rate than its predecessor. Arch Orthop Trauma Surg. 2018;138(11):1591-1599. https://doi: 10.1007/s00402-018-3019-5.
5. Evangelista PJ, Laster SK, Lenz NM, Sheth NP, Schwarzkopf R. A Computer Model of Mid-Flexion Instability in a Balanced Total Knee Arthroplasty. J Arthroplasty. 2018;33(7S):S265-S269.
6. Grieco TF, Sharma A, Dessinger GM, Cates HE, Komistek RD. In Vivo Kinematic Comparison of a Bicruciate Stabilized Total Knee Arthroplasty and the Normal Knee Using Fluoroscopy. The Journal of Arthroplasty. 2018;33(2):565-571.
7. Kaneko T, Kono N, Mochizuki Y, Hada M, Toyoda S, Musha Y. Bi-cruciate substituting total knee arthroplasty improved medio-lateral instability in mid-flexion range. J Orthop. 2017;14(1):201-206.
8. Harris AI, Luo TD, Lang JE, Kopjar B. Short-term safety and effectiveness of a second-generation motion-guided total knee system. Arthroplasty today. 2018;4(2):240-243.
9. Iriuchishima T, Ryu K. A Comparison of Rollback Ratio between Bicruciate Substituting Total Knee Arthroplasty and Oxford Unicompartmental Knee Arthroplasty. J Knee Surgery. 2018;31(6):568-572.
10. Murakami K, Hamai S, Okazaki K, et al. Knee kinematics in bi-cruciate stabilized total knee arthroplasty during squatting and stair-climbing activities. J Orthop. 2018a;15(2):650-654.
11. Murakami K, Hamai S, Okazaki K, et al. Preoperative tibial mechanical axis orientation and articular surface design influence on the coronal joint line orientation relative to the ground during gait after total knee arthroplasties. Knee Surg Sports Traumatol Arthrosc. 2018b;26:3368-3376.
12. Murakami K, Hamai S, Okazaki K, et al. In vivo kinematics of gait in posterior-stabilized and bicruciate-stabilized total knee arthroplasties using image-matching techniques. Int Orthop. 2018c;42:2573-2581.
13. Zambianchi F, Fiacchi F, Lombari V, et al. Changes in total knee arthroplasty design affect in-vivo kinematics in a redesigned total knee system: A fluoroscopy study. Clin Biomech (Bristol, Avon). 2018;54:92-102.
14. Lutes W and Fitch D. Comparison of functional outcomes following total knee arthroplasty with a conventional implant design or one designed to mimic natural knee kinematics. Presented at: 39th SICOT Orthopaedic World Congress; October 10-13, 2018; Montréal, Canada.
15. Harris AI. Performance of second-generation guided motion total knee arthroplasty system: Results from the international multicenter study of over 2,000 primary TKA with up to 6 Years follow-up. Poster presented at AAHKS Annual Meeting. November 1-4 2018. Dallas, Texas, USA.
16. Mayman DJ, Patel AR, Carroll KM. Hospital Related Clinical and Economic Outcomes of a Bicruciate Knee System in Total Knee Arthroplasty Patients. Poster presented at: ISPOR Symposium; May 19-23, 2018; Baltimore, Maryland, USA.
17. Kosse NM, Heesterbeek PJC, Defoort KC, Wymenga AB, van Hellemondt GG. Minor adaptations in implant design bicruciate-substituted total knee system improve maximal flexion. Poster presented at: 2nd World Arthroplasty Congress; 19-21 April, 2018; Rome, Italy.
18. Data on file with Smith & Nephew.

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