Anatomic Dual Mobility
Mobile Bearing Hip System
Anatomic Dual Mobility (ADM) is the only mobile bearing hip that combines an anatomic shell designed to offer you the benefits of a large diameter bearing with low friction.
Exclusive anatomic dual mobility design, exclusively yours
Implant with confidence with our patented ADM X3, the only mobile听 bearing hip that combines an anatomic shell design and our X3 precisely engineered polyethylene.1,2 ADM is designed to offer the benefits of a large diameter bearing with low friction, allowing for stability3, longevity4-7 and an anatomic rim.听听
ADM鈥檚 unique anatomic rim with iliopsoas notch design is exclusive to Stryker. Data obtained through an anatomical cadaver study suggests that over 40% of patients are at risk of psoas conflict.8 ADM was designed with left and right anatomical cup shapes incorporating a psoas cutout to allow for relief between the acetabular shell rim and the iliopsoas tendon.
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ADM X3 is based on the dual mobility principle with two points of articulation. Dual mobility bearings marry two well-known concepts in THA:听
The Charnley low-friction arthroplasty (LFA) prosthesis has demonstrated clinically that smaller diameter heads lead to less wear.9,10
The large head concept from McKee-Farrar recognizes that a large diameter bearing is inherently more stable than a smaller diameter head.9
ADM is a monoblock cobalt chrome alloy shell with plasma sprayed titanium surface overlaid with hydroxyapatite. This shell has a peripheral self-locking (PSL) 1.5mm press-fit.
References:
- Wang A, Dumbleton JH, Essner A, Yau S, inventors; Howmedica Osteonics Corp, assignee. Sequentially cross-linked polyethylene. US patent 7,517,919. April 14, 2009.
- Auxepaules A, Delog茅, Raugel P, inventors; Benoist Girard SAS, assignee. Prosthetic acetabular cup and prosthetic femoral joint incorporating such a cup. US patent 7,833,276 (B2). November 16, 2010.
- Heffernan C, Bhimji, S, Macintyre J, et al. Development and validation of a novel modular dual mobility hip bearing. Presented at Orthopaedic Research Society (ORS) Annual Meeting; January 13-16, 2011; Long Beach, CA.
- Herrera L, Lee R, Longaray J, Essner A. Edge loading wear due to inclination angle for three contemporary hip bearings. Presented at: Orthopaedic Research Society (ORS) Annual Meeting; March 6-9, 2010; New Orleans, LA.
- Wang A, Essner A, Polineni VK, Stark C, Dumbleton JH. Lubrication and wear of ultra-high molecular weight polyethylene in total joint replacements. Tribol Int. 1998;31(1-3):17-33. doi: 10.1016/S0301-679X(98)00005-X
- Essner A, Polineni VK, Wang A, Stark C, Dumbleton JH. Hip simulator wear of 鈥渆nhanced鈥 UHMWPE acetabular inserts. Presented at: Orthopaedic Research Society (ORS) Annual Meeting; March 16-19, 1998; New Orleans, LA.
- Essner A, Wang A, Martell J, Edidin A. In-Vitro and in-vivo acetabular cup wear corroboration. Presented at: Orthopaedic Research Society (ORS) 47th Annual Meeting; February 25-28, 2001; San Francisco, CA.
- Tracol P, Vandenbussche E, Deloge N, ADM group. Navigation acetabular anatomic study application in the development of a new implant. Presented at: 8th EFORT Annual Congress; May 11-15, 2007; Florence, Italy.
- Jauregui JJ, Pierce TP, Elmallah RK, Cherian JJ, Delanois RE, Mont MA. Dual mobility cups: an effective prosthesis in revision total hip arthroplasties for preventing dislocations. Hip Int. 2016;26(1):57-61. doi:10.5301/hipint.5000295
- Stroh A, Naziri Q, Johnson AJ, Mont MA. Dual-mobility bearings: a review of the literature. Expert Rev Med Devices. 2012;9(1):23-31. doi:10.1586/erd.11.57
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