Biomechanics & Biomaterials MCQs

The compressive stiffness of articular cartilage is primarily provided by the interaction between which two matrix components?

If the inner diameter of a hollow intramedullary nail is kept constant while the outer diameter is doubled, how does the torsional rigidity of the nail change?

A viscoelastic material subjected to a constant load exhibits a progressive increase in deformation over time. This phenomenon is known as:

Which of the following scenarios is most likely to result in galvanic corrosion?

On a stress-strain curve, the area under the entire curve up to the point of failure represents which mechanical property of the material?

In biomechanics, the S-N curve (stress vs. number of cycles) is used to evaluate a material's susceptibility to:

Which of the following mechanical properties best describes a material whose mechanical behavior is dependent on the rate at which the load is applied?

On a standard stress-strain curve for cortical bone, the slope of the curve within the linear elastic region represents which of the following mechanical properties?

The torsional rigidity of a solid cylindrical intramedullary nail is mathematically proportional to its radius raised to which of the following powers?

A surgeon utilizes a stainless steel plate and secures it with titanium alloy screws. Which specific type of corrosion is most likely to occur at the plate-screw interface?

Which of the following orthopedic implant materials possesses a Young's modulus (elastic modulus) that is closest to that of human cortical bone?

In the context of the viscoelastic properties of ligaments and tendons, what is the biomechanical term for the progressive decrease in tension over time when the tissue is held at a constant length?

A patient sustains a ligamentous injury. The viscoelastic property where the ligament lengthens continuously under a constant applied load over time is called:

The torsional rigidity of a solid cylindrical intramedullary nail is proportional to its radius raised to what power?

On a standard stress-strain curve for cortical bone, the point at which the material begins to exhibit permanent plastic deformation and will not return to its original shape upon unloading is called the:

The stiffness of an orthopedic implant is determined by its material properties, specifically the Young modulus. Among the following common implant materials, which possesses a Young modulus most similar to that of cortical bone?

A viscoelastic material, such as a ligament, exhibits time-dependent mechanical behavior. If a constant static tensile load is continuously applied to a ligament over time, the gradual increase in its length is referred to as:

When selecting an orthopedic implant to minimize stress shielding of the underlying bone, which of the following materials is most appropriate due to its modulus of elasticity being closest to that of human cortical bone?

Which of the following viscoelastic properties describes the progressive deformation of a ligament or tendon when it is subjected to a constant tensile load over an extended period of time?

A tendon undergoes continuous deformation over time when subjected to a constant physiological load. This viscoelastic property is termed: