Abstract
Upon my clinical investigations, thirty cases of lesions of semilunar cartilage were found among seventy-six cases (eighty-six legs) of knee-joint lesions. I have reached the following conclusions;
1. Lesions of semilunar cartilage have been experimentally ascertained to be mainly caused by external indirect actions. But not a few cases of unknown cause are also observed.
2. As for its anamnesis, close attention should be paid to symptoms of locking.
3. Atrophy of femoral muscles arises comparatively early in almost every case.
4. Lesions of semilumar cartilage are not always accompanied with restriction of extension of knee-joint. And lesions of semilumar cartilage without restriction of extension are also very frequently noticed.
5. Symptoms of I and II Steinmann and of Mc. Murray are to be carefully examined in the diagnosis of knee-joint lesions.
6. Symytoms of Bragard, Turner and Payr's “Türkensitz” are of little importance in the diagnosis of semilunar cartilage lesions.
7. “Simple” X-ray photograms of 10 cases show that a new local prickle sprouts on the injuried side of the tibia or the femur. This seems to be very useful to diagnose the lesions of semilunar cartilage
