Anterior cruciate ligament injuries. To counsel or to operate?

Untreated anterior cruciate ligament injuries in 97 knees of 87 patients were reviewed after a mean interval of six years. After their initial recovery 63% of the patients were able to return to their pre-injury sport, but six years later 27% of them had deteriorated to the extent that they could not cope with the same level of sport. Radiological deterioration was maximal in those that had had a meniscectomy more than five years before review.

The role of atmospheric pressure in stabilising the shoulder. An experimental study.

The role of atmospheric pressure in providing static stability of the shoulder was studied experimentally in 24 cadaveric shoulders. Atmospheric air was allowed to enter the joint after puncturing the capsule. Three types of experiment were performed: in the first, the capsule was punctured after sequential division of the muscles; in the second, atmospheric air was let in by percutaneous puncture of of the capsule without dividing the muscles; and in the third, air was first let into the joint by percutaneous puncture of the capsule and then the muscles of the shoulder were divided.

Benign Chondroblastoma.

Eight cases of benign chondroblastoma seen between 1957 and 1980 were reviewed. The majority presented between the age of 10 and 25. There was no male preponderance.