Chronic recurrent multifocal osteomyelitis with MR correlation: a case report.

Chronic recurrent multifocal osteomyelitis (CRMO) is a rare disorder of unknown etiology. The main characteristics on plain X-rays are a lytic destruction in the metaphyseal region of the long bones followed by progressive sclerosis. The symmetrical pattern and the frequent involvement of the sternoclavicular joints and vertebrae are typical.

Electrical stimulation of bone growth with direct current.

Electrical stimulation of osteogenesis was studied in rabbit femora in: (A) a transcortical electric field with a cortex-depolarizing or hyperpolarizing orientation derived from an intramedullary electrode and a ring-shaped counter electrode encircling the femoral shaft; and (B) an electric field derived from an electrode located in the medullary canal and the counter electrode in the abdominal wall. Electrodes were made of platinum. A direct current of 20 microA was applied during six weeks.

Electrode-oxygen consumption and its effects on tissue-oxygen tension. A study by mass spectrometry.

A theory for the mechanism of electrical bone stimulation proposes that passage of an electric current reduces the local PO2 and raises the pH near the cathode, thereby creating a favorable environment for osteogenesis. To study the effects of electric current passage on the PO2, PCO2 and pH in the vicinity of the electrodes in vivo, a wire electrode spiralled around the catheter of a clinical mass spectrometer was placed in dog muscle. Electrodes were made of stainless steel or platinum.