DELTA TT
The LimaCorporate DELTA TT is a hemispherical cementless acetabular cup manufactured in Trabecular Titanium through the process of additive manufacturing. Breaking new ground in orthopedic technology, it combines the unique features of the DELTA System with the Trabecular Titanium structure.
Benefits
TT Trabecular Titanium ingrowths surface
Full hemispherical profile
State of the art bearing options including DELTA Dual Mobility
About
TT Trabecular Titanium allows for primary stability and bone ingrowth [2,3,4,5]. Optional bone screws can be used to support stability in cases of insufficient bone [2]. The full hemispherical profile with a press-fit of 1mm provides initial close contact with viable native bone [2,4]. LimaCorporate’s leading technology provides a unique titanium alloy component with material continuity from the core to dome, replicating the cone structure on order to optimise mechanical resistance [6,7]. DELTA cups offer close contact between bone and TT Trabecular Titanium helping to achieve a stable primary stability, laying the foundation for secondary fixation [4]. Its Macro Roughness supports the high friction with bone to maximise primary stability enhancing bone integration [11]. The cup’s micro roughness encourages the attachment, proliferation and differentiation of anchorage-dependent bone forming cells [12]. Since 1978 LimaCorporate has adopted a taper connection between liners and cups for a more stable coupling with almost 20º angle for a self-locking system [13]. The unique polar peg technology facilitates the correct insertion of the liners into the acetabular cups for correct orientation and self-locking. Liner offerings provide BIOLOX®delta, xLima, LimaVit™ and DELTA dual mobility liners. TT Trabecular Titanium offers the scaffold for cell colonisation and bone tissue vascularisation. An optimal porosity and pore size promote enhanced vascularisation and mineralisation, favouring new bone formation [14,15]. Stem cells (hASCs] grown on TT Trabecular Titanium scaffolds have shown to adhere, proliferate and differentiate into osteoblasts, even in the absence of osteogenic factors [16,17]. Histomorphometric analysis in a sheep model comparing TT Trabecular Titanium with traditional coatings proved that TT Trabecular Titanium favours direct osteogenesis with high osseointegration [18]. TT Trabecular Titanium provides 87% bone in-growth in cortical bone ad 68% in cancellous bone [18].
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[15] Frosch KH, Barvencik F, Viereck V, Lohmann CH, Dresing K, Breme J, Brunner E, Stürmer KM. Growth behavior, matrix production, and gene expression of human osteoblasts in defi ned cylindrical titanium channels. J Biomed Mater Res A. 2004;68(2):325-34
[16] Gastaldi G, Asti A, Scaffi no MF, Visai L, Saino E, Cometa AM, Benazzo F. Human adipose-derived stem cells (hASCs) proliferate and differentiate in osteoblast-like cells on trabecular titanium scaffolds. J Biomed Mater Res A. 2010;94(3):790-9.
[17] Benazzo F, Botta L, Scaffi no MF, Caliogna L, Marullo M, Fusi S, Gastaldi G. Trabecular Titanium can induce in vitro osteogenic differentiation of human adipose derived stem cells without osteogenic factors. J Biomed Mater Res Part A. 2014:102A:2061–71.
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Sizing
& Options
Vitamin E (a-tocopherol) is an effective biological antioxidant that helps preventing the oxidative degradation of cells’ membrane phospholipids, hence the polymer, while ensuring ultra-low wear and maintaining greater mechanical strength over time compared to standard UHMWPE.
Bibliography: Exponent (2015). Material Characterization of Limacorporate S.p.A.’s Vitamin E Blended 100 kGy UHMWPE. Appendix 13b.
Papers
Aiba H, Watanabe N, Inagaki T, Fukuoka M, Murakami H.
Klaassen A, Schäffer B, Willigenburg N, Van Beers L, Scholtes V, Van Der Hulst V, Koster L, Kaptein B, Moojen D, Poolman RW.
Massari L, Bistolfi A, Grillo PP, Borré A, Gigliofiorito G, Pari C, Francescotto A, Tosco P, Deledda D, Ravera L, Causero A.
Resources
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