This time, I would like to talk about Sinding-Larsen-Johansson disease.
Some of you may have never heard of this disease, but as a medical professional, you must know about it.
It is important to differentiate Johansson's disease from other diseases, and if you can't differentiate it from other diseases, it is easy to miss a fracture.
When does it happen?
It tends to occur in boys in their teens, and is caused by frequent repetition of knee bending and extension.
The pain is confined to the patella, the tip of the knee plate.
About the characteristics
Patients should be asked to point to the painful area to get a hint on how to identify it.As with jumper's knee, there may be no obvious trauma.
Since the tender areas are different, it is easy to differentiate from jumper's knee.
If it is accompanied by obvious trauma, consider a sleeve fracture.
In general, conservative treatment is recommended.
Although the imaging findings are similar to those of a sleeve fracture, this condition remits with rest, so it is possible to differentiate between the two.
Case
11-year-old male
He was a tennis player and had been experiencing pain when extending his knee for two weeks.
The pain pointed to the lower end of the patella and he complained of pain when stretching the quadriceps.Imaging findings showed abnormal ossification at the lower end of the patella, and rest was indicated.
The patient was re-examined two months later, and a tendency toward fusion was confirmed.
Conclusion
This symptom is caused by traction force (pulling force) before and after the epiphyseal line closes.
Lack of basic anatomical knowledge can lead some people to think it is patellar ligamentitis, osteochondrosis, or a muscle problem.
This symptom can develop into a fracture, so if it can be identified, it can be treated and a fracture can be prevented.However, underestimating the symptoms as growing pains can lead to medical malpractice, which can result in broken bones.
