Chondrocalcinosis and Gitelman syndrome.

Abstract

A 37-year-old Polish lady presented left knee pain causing reduced mobility and time off work. She also complained of intermittent episodes of fatigue. Knee X-ray showed marked chondrocalcinosis (Figure 1). Serum electrolytes revealed a potassium level of 2.8 mmol/l and magnesium of 0.46 mmol/l and a hypochloraemic metabolic alkalosis. Urinary electrolytes confirmed renal potassium wasting and hypocalciuria. Figure 1. Plain X-ray of knee demonstrating marked chondrocalcinosis in a patient with Gitelman syndrome. Arrow heads show chondrocalcinosis. The patient’s knee pain was treated with NSAIDs and steroid joint injection and magnesium glycerophosphate …