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A patient experiencing chronic pain is seeing a physical therapist for an initial evaluation. The patient requests education about surgical options to manage pain symptoms. What evidence based statements can the therapist include in their patient education to satisfy the patient’s request.

According to the treatment based classification system, a patient who is younger than 40 years old, demonstrates a positive Prone/Passive Lumbar Extension Test, and straight leg raise >90 degrees should be considered to be in what classification category?

A 15-year-old patient, active in football and soccer, reports constant low back pain that worsens with repetitive kicking motions. The therapist observes that the patient is compensating with lumbar extension due to a lack of hip mobility in which direction?

A PTA is treating a patient diagnosed with hepatitis and notes new bruising around the knee joint following the previous treatment session. Which action is most appropriate?

A PTA states, “Type I diabetes occurs because the pancreas produces too much insulin.” Which response by the physical therapist is most accurate?

An obese patient expresses concern about developing an abdominal hernia and states, “Because I have extra layers of tissue, I don’t have to worry about hernias.” Which response by the physical therapist is most accurate?

A set of two identical disks, each uniform in composition, are attached to each other as shown above and rotate together as a rigid object around an axis located at the point of contact, as indicated above. The radius of each disk is R, the mass of each disk is M and the inertia of a disk around an axis through its center and perpendicular to the disk is I = MR2/2. What is the rotational inertia of the rigid object formed by these two disks around the indicated axis of rotation?

The rotor within a generator has a moment of inertia of 400 kg m2 and is rotating at 20 rad/s. The rotor is brought to rest over 20 seconds, at a constant angular acceleration. What is the magnitude of the torque being applied to the rotor over this interval?

The unit kg·m2·s-1  (or, equivalently, kg·m2/s) can be used for:

A 200 kg “four-wheeler” is rolling horizontally at 1 m/s. You would like to stop the vehicle by shooting a 2 kg bouncy rubber ball at it, also horizontally. About how fast should you shoot the ball?