The LINK Hip Revision Systems at a glance

directLINK 2/2022
 

The LINK Hip Revision Systems

LINK MP Reconstruction System Hip Stem with proximal intermediate ring and neck segments with suture holes and neck segment standard 
The MP Reconstruction System (here the cementless version) combines all the advantages of a modular stem with the strong anchoring characteristics of a monoblock. Stem shape, elasticity and surface provide high osseointegration and strong primary stability. The modular connection is highly stable without proximal bone support, and the choice of anteversion, leg length correction and neck length is not dependent on distal fixation. More than 60,000 stems have been implanted since 1993, with a ten-year survival rate of 95.6 percent.

LINK MP Monoblock Hip Stem
The MP Monoblock is the shortest Wagner type revision stem on the market. The tapered stem (2 degrees) and wide rib geometry provide excellent axial stability with lower migration risk. The rough grit blasted Tilastan surface supports bone remodeling to provide long-term stability. The low risk of subsidence and the high offset version reduce the risk of dislocation to a minimum. The short taper and flattened neck provide a great range of motion.1, 2, 3

MobileLink Acetabular Cup System
The MobileLink is available with a cluster-hole and a multi-hole pressfit cup. Both versions are available with a PlasmaLink coating, a TiCaP double coating and a TrabecuLink surface. The TiCaP double coating combines a porous surface for primary fixation with our HX** calcium phosphate coating. 

MobileLink Inserts
In addition to ceramic and UHMWPE inserts, the MobileLink can be combined with modular offset and/or inclining casing/insert adapters (Face Changer). They allow the restoration of the ana-tomy and the necessary adjustments as well as the use of ceramic inserts for revisions. Dual Mobility Inserts made of EndoDur*** allow the MobileLink to be converted into a modular Dual Mobility System (DM), which reduces the risk of dislocation and increases the range of motion.4 The DM insert can accommodate DM-Liners from the BiMobile Dual Mobility System made of polyethylene.

Acetabular Cups
The acetabular cups are characterized by a secure fixation of the polyethylene inserts by a snap-lock mechanism as well as by conical coupling and antirotation tabs.
– TrabecuLink Cup, Multi-Hole
The three-dimensional TrabecuLink with its pore size, porosity and type of structure, provides a basis for biologic fixation.4,5, 6
– TiCaP-Cup, Multi-Hole
The combination of rough titanium plasma surface for primary fixation plus HX calcium phosphate coating** .7, 8

TrabecuLink Augments
The TrabecuLink Augments offer an attractive solution for segmental acetabular defects as an alternative to structural allografts. The biocompatible material Tilastan-E and the TrabecuLink structure provide excellent conditions for stable and durable restoration of bone defects. In addition, the three-dimensional TrabecuLink structure with its pore size, porosity and structural depth has an excellent basis for biologic fixation.9, 10 The augments can be combined with all LINK cups.


* E-Dur: Highly cross-linked UHMWPE with added vitamin E.
** HX: Rapidly soluble calcium phosphate
*** EndoDur: CoCrMo/ literature available by e-mailing to info@link-ortho.com

Literature:

  1. Data on File, Waldemar Link.
  2. Ullmark G, Sorensen J, Nilsson O. Analysis of bone formation on porous and calcium phosphate-coated acetabular cups: a randomised clinical [18F]fluoride PET study. Hip international: the journal of clinical and experimental research on hip pathology and therapy. 2012;22(2):172-8.
  3. PCT-Patent Application WO 2017/140497 A1
  4. Cecile M. Bidan, Krishna P. Kommareddy, Monika Rumpler, Philip Kollmannsberger, Yves J.M. Brechet, Peter Fratzl, John W.C. Dunlop. et al.; How Linear Tension Converts to Curvature: Geometric Control of Bone Tissue Growth; PLoS ONE 7(5): e36336. doi.org/10.1371/journal.pone.0036336 (2012)
  5. Pascal Joly, Georg N. Duda, Martin Schöne, Petra B. Welzel, Uwe Freudenberg, Carsten Werner, Ansgar Petersen, et al.; Geometry-Driven Cell Organization Determines Tissue Growth in Scaffold Pores: Consequences for Fibronectin Organization; PLoS ONE 8(9): e73545. doi.org/10.1371/journal.pone.0073545 (2013)
  6. Stroh, D. Alex, et al. "Dual-mobility bearings: a review of the literature." Expert review of medical devices 9.1 (2012): 23-31.
  7. Long, M., & Rack, H. (1998). Titanium alloys in total joint replacement—a materials science perspective. Biomaterials, 19(18), 1621-1639
  8. Loving L, Herrera L, Banerjee S, Heffernan C, Nevelos J, Markel DC, Mont MA. 2015. Dual mobility beari ngs withstand loading from steeper cup-inclinations without substantial wear. J Orthop Res. 33(3):398-404.
  9. Fabry C, Kaehler M, Hermann S, Woernle C, Bader R. 2014. Dynamic behavior of tripolar hip endoprostheses under physiological conditions and their effect on stability. Medical Engineering & Physics 36:65– 71.
  10. Steinemann SG; Compatibility of Titanium in Soft and Hard Tissue – The Ultimate is Osseointegration; Materials for Medical Engineering, WILEY-VCH, Volume 2, Page 199-203
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