Urologenzentrum Wien - Senkniere: Darstellung der Lageveränderung der Niere bei einer Person mit Senkniere.

Knee bends

A floating kidney, also called nephroptosis, is a condition in which one or both kidneys descend from their normal position in the abdominal cavity down into the pelvis. This shift can cause various discomforts and impair kidney function.

Causes of nephroptosis

Nephroptosis is often caused by a weakness of the ligaments and surrounding tissue that hold the kidneys in their position. Common causes include rapid weight loss, weakness of the abdominal muscles, frequent physical exertion or heavy lifting, and congenital connective tissue weakness.

Symptoms of nephroptosis

  • Pain in the flank or lower back that worsens when standing upright
  • Nausea and vomiting
  • Urinary tract infections
  • Blood in the urine (hematuria)
  • Fatigue and general discomfort

Diagnosis of nephroptosis.

The diagnosis is made through a physical examination and imaging techniques such as ultrasound, intravenous pyelography (IVP), or computed tomography (CT). Urine and blood tests are conducted to detect signs of urinary tract infections or hematuria.

Treatment options for nephroptosis

  • Conservative: In mild cases, bed rest, wearing a supportive corset, and avoiding heavy physical activities are recommended. 
  • Medication: Painkillers and antibiotics for treating infections may be prescribed. 
  • Surgical: In cases of severe symptoms or complications, a nephropexy (surgical fixation of the kidney) may be necessary to return the kidney to its normal position and fix it.

Preventive measures for nephroptosis

To prevent nephroptosis, sudden weight loss should be avoided and the abdominal muscles should be strengthened. Lifting heavy loads should be done with caution, and at the first signs of discomfort, a doctor should be consulted to allow for early diagnosis and treatment.


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