You suspect your athlete is suffering from chondromalacia patellae, secondary to a medial meniscus tear. You refer your athlete to the team physician and they perform a meniscectomy via arthroscopic surgery. While reviewing the arthoscopic surgery pictures with your team physician, what do you expect to see?

A PTA positions a patient in prone with the knee flexed to 60 degrees prior to completing a manual muscle test of the hamstrings. To isolate the biceps femoris the therapist should:

An athlete is only able to contract the rectus femoris muscle in a gravity eliminated position, with no joint motion. What grade would you assign them?

The patient is sent to physical therapy secondary to a lower extremity injury. Reading the patient’s past medical history you note that the superficial peroneal nerve has been damaged. Which of the following muscles would be emphasized in your treatment program?

As shown in Fig. 2, a proton is projected with speed 3 . 90 × 10 6   m s into a region with a uniform electric field parallel to the velocity of the proton and then enters a region with a uniform magnetic field which is perpendicular to the proton velocity with a magnitude B → = 0 . 300   T . Both the width of the electric region and the width of the magnetic region are 20 . 0   c m . If the surface charge density of the left large plate in the electric field region is 6 . 00 × 10 – 6   C m 2 and the surface charge density of the right large plate in the electric field region is – 6 . 00 × 10 – 6   C m 2 , (a) what is the speed of the proton when it exits from the region of the electric field; (b) what is radius of path of the proton after it enters the region of magnetic field; (c) how much time does the proton stay in the region of the magnetic field; and (d) what are the x and y components of the velocity of the proton when it exits the magnetic region? If the magnitude of the magnetic field can be changed, (e) what is the magnitude of the magnetic field if the incoming proton exits the region of magnetic field in a direction opposite to its incoming direction? (mass of a proton= 1 . 67 × 10 – 27   k g ; charge of a proton= 1 . 60 × 10 – 19   C ) fig_q18_final.jpg                                                                 Fig. 2.1                                                                                                                                                                                                                                     Fig. 2.2

The number of turns per meter in a solenoid of fixed length is doubled. At the same time the current in the solenoid is halved. The energy stored in the solenoid:

A PTA assesses the strength of a patient’s lower extremities following an athletic injury. The test pictured below would be MOST effective to examine the strength of the:

You are reevaluating the glenohumeral joint of a 33-year-old female. The patient has received 2 weeks of physical therapy for a frozen shoulder. Which of the following muscles does not attach to the greater tuberosity of the humerus?

An electron moves in a region of constant electric field. Which of the following statements is correct?

A positive valsalva maneuver indicates what type of condition?