National Physical Therapy Examination (NPTE) Practice Exam

After a PCL reconstruction, what type of exercise should be emphasized for the patient's knee rehabilitation?

1. Hamstring stretching

2. Quadriceps strengthening in closed kinematic chain

3. Hamstring strengthening

4. Quadriceps stretching

The correct answer is: Quadriceps strengthening in closed kinematic chain

Following a PCL reconstruction, rehabilitation focuses heavily on restoring knee stability and function, and quadriceps strengthening in closed kinematic chain exercises is crucial for several reasons. The quadriceps muscle plays a significant role in stabilizing the knee joint and providing support during weight-bearing activities. Strengthening these muscles helps improve proprioception and knee control, which can mitigate the risk of future instability or injury. Closed kinetic chain exercises, such as squats and leg presses, allow for a more functional movement pattern that simulates everyday activities and sports, promoting better alignment and safer loading of the knee joint. These exercises also emphasize the activation of surrounding muscles and structures, which can foster quicker recovery and a return to normal activities. In contrast, while hamstring stretching and strengthening can benefit overall knee function, they are not the primary focus immediately after PCL reconstruction. Stretching the quadriceps might also be important for achieving optimal range of motion, but strengthening of the quadriceps is prioritized to provide the necessary stability and support to the healing knee.