In total hip arthroplasty, failure frequently occurs with some extent of femoral, especially proximal, bone defect. To repair such femoral defects, stems are constructed in a variety of stiffnesses, diameters, and shapes with various materials. Stem design has been iteratively developed with both modular and nonmodular designs. Additionally, implant features including calcium phosphate coatings, predominantly hydroxyapatite, have been used to enhance and accelerate bone apposition to the implant. Ultimately, nonmodular revision stems may include a range of options including primary stems, long stems, fully porous-coated, tapered fluted titanium, custom or anatomic, and cylindrical options. This chapter explores the nonmodular stems currently available and the rationale for their use in femoral reconstructions.