Is patellar subluxation serious?

summary

The traumatic dislocation of patella can be caused by violence or structural abnormality. The main trauma was direct violence, which was in the anteromedial, medial or lateral patella; Occasionally, the patella was dislocated due to indirect violent quadriceps contraction. Is patellar subluxation serious? Let's talk about it

Is patellar subluxation serious?

Once it happens, we can often use manipulative reduction. When the knee joint is over extended, we can squeeze the lateral edge of the patella to reset the dislocated patella. Recurrent subluxation or total dislocation of patella should be avoided as far as possible. However, it should be noted that conservative treatment often ignores the injury of medial patellar retinaculum, and can not correct developmental patellar asymmetry or patellofemoral malalignment.

When there are bone and cartilage fragments in the knee joint, it should be surgically removed or repaired, and the torn medial soft tissue of the knee, including the medial expansion part of quadriceps femoris, should be repaired during the operation. If necessary, lateral retinaculum release and medial retinaculum tightening can be done to reduce the lateral tension of patella. If the dislocation of patella can not be repaired by manipulation, it should also be treated by surgical incision, and the torn soft tissue should be repaired at the same time.

If the bone structure and Q angle of the knee joint of the patient are normal, the ideal effect can be achieved by simple medial repair or tightening, and incision and release of the lateral retinaculum. In order to avoid recurrence of patellar dislocation after operation, the patients with congenital Q angle abnormality should be treated as recurrent patellar dislocation.

matters needing attention

Rehabilitation should emphasize closed chain exercise, including wall exercise, that is, the patient squats about 40 °、 Keep your back against the wall for 15-20 seconds and repeat for 10-15 times. After the acute inflammatory response was relieved, a 6-8-inch platform was used for side and front step exercise. After that, we carried out small arc leg press exercise, and used fixed bicycle and stair machine for endurance strengthening exercise.