Offset stem

Bi-modular stems were introduced in primary total hip arthroplasty (THA) to enable better control of the femoral offset, leg length, and hip stability. Despite numerous reports on modular femoral neck fractures, some designs are still marketed worldwide.

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The aim of this study is (1) to compare joint line (JL) restoration and clinical outcomes in revision TKA based on the contemporary prosthesis type and (2) to determine the restoration of posterior condylar offset (PCO) according to the use of a femoral offset stem.

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A proper restoration of hip biomechanics is fundamental to achieve satisfactory outcomes after total hip arthroplasty (THA). A global hip offset (GO) postoperatively reduction of more than 5 mm was known to impair hip functionality after THA.

8p vimariana2711 22-12-2020 11 1   Download

Subsurface drip irrigation (SDI) can substantially reduce the amount of irrigation water needed for corn production. However, corn yields need to be improved to offset the initial cost of drip installation. Air-injection is at least potentially applicable to the (SDI) system. However, the vertical stream of emitted air moving above the emitter outlet directly toward the surface creates a chimney effect, which should be avoided, and to ensure that there are adequate oxygen for root respiration.

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In Canada, other factors such as digester insulation, because of cold weather, also influence the final cost of such a system. To be economical, digester capital cost must be offset by energy savings, fertilizer use, and bedding replacement . Another disadvantage 17 is that fresh poultry manure can be hauled as solid manure, but if digested, the dilution water would increase the original volume by about four times . As well, the biogas produced has low energy per unit volume and can only be used for on-site operations such as running an electrical generator.

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