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MINIMA S
The Minima S is a primary uncemented curved short stem which has been designed following the principles of metaphyseal fixation and a round-of-the-corner insertion technique.
Preserves Greater Trochanter Bone Stock
Allows a fast rehabilitation through soft tissue sparing approaches
The fourth taper conicity enhances stability
About
MINIMA S covers all surgical approaches.
The MINIMA S triple tapered stem provides good fixation and minimises subsidence improving loading of the proximal femur, therefore maintaining bone quality and avoiding stress shielding. The trapezoidal cross-section in Titanium alloy allows a better load transmission than other cross-section shape and or different material. An optimized calcar stress distribution is achieved through a rounded medial region. The stem comes with a high open porosity combined with high roughness.
BIBLIOGRAPHY
[1] Müller M, Tohtz S, Springer I, Dewey M, Perka C. Randomized controlled trial of abductor muscle damage in relation to the surgical approach for primary total hip replacement: minimally invasive anterolateral versus modified direct lateral approach. Arch Orthop Trauma Surg. 2011;131(2):179-89.
[2] D’Arrigo C, Speranza A, Monaco E, Carcangiu A, Ferretti A. Learning curve in tissue sparing total hip replacement: comparison between different approaches. J Orthop Traumatol. 2009;10(1):47-54.
[3] Pflüger G, Junk-Jantsch S, Schöll V. Minimally invasive total hip replacement via the anterolateral approach in the supine position. Int Orthop. 2007;31(Suppl 1):7–11.
[4] Hayashi S, Nishiyama T, Fujishiro T, Kanzaki N, Hashimoto S, Kurosaka M. Periprosthetic bone mineral density with a cementless triple tapered stem is dependent on daily activity. Int Orthop. 2012;36(6):1137-42.
[5] Sabatinia AL, Goswami T. Hip implants VII: Finite element analysis and optimization of cross-sections. Materials & Design. 2008;29(7):1438–46.
[6] Zweymüller KA, Schwarzinger UM, Steindl MS. Radiolucent lines and osteolysis along tapered straight cementless titanium hip stems: a comparison of 6-year and 10-year follow-up results in 95 patients. Acta Orthop. 2006:77(6):871–6.
[7] Wick M, Lester DK. Radiological changes in second- and third-generation Zweymüller stems. J Bone Joint Surg [Br]. 2004:86(8);1108–14.
[8] Zenz P, Pospisil ., Fertschak W, Schwagerl W. 10 years of cementless implantation of total hip endoprosthesis using Zweymuller’s stem. Z Orthop Ihre Grenzgeb. 1995;133(6):558-61.
Sizing and Options
MINIMA S Ti6Al4V + PoroTi
Sizes 1 to 12
Std offset 134°
Lateralized offset 131°
Clinical Papers
Drosos GI.
Recent evidence in less invasive approaches and less invasive implants in total hip replacement. Recent Adv Arthroplast. 2017; 1(1): 1- 8.
Comparison of radiographic changes in rectangular curved short stem with thin versus thick porous coating for cementless total hip arthroplasty: a retrospective study with a propensity score matching. J Orthop Surg Res. 2021 Apr 13;16(1):247.