The figures illustrate a fixation device consisting of a plate and two screws, w

Question

The figures illustrate a fixation device consisting of a plate and two screws, which can be used to stabilize fractured bones. During a single leg stance, a person can apply his/her entire weight to the ground via a single foot. In such situations, the total weight of the person is applied back on the person through the same foot, which has a compressive effect on the leg, its bones, and joints. In case of a patient with a fractured femur, this force is transferred from below to above (distal to proximal) the fracture through the screws of the fixation device. If the diameter of the screws is D = 5mm and the weight of the person is W = 700N, determine the shear stress exerted on the screws of a two - screw fixation device during a single leg stance on the leg with a fractured bone, (assume that all of the force is taken up by the device).

Explanation / Answer

shear stress=F/2*A F=600 A=pi*(0.005)^2 S=7639437.268=7.637MPa

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.