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[Clino-static syndrome]
1Service de Rhumatologie, Hôpital Robert Ballanger, Aulnay-Sous-Bois.
Annales De Radiologie
|January 1, 1993
Summary
Clinostatic syndrome causes lower limb weakness when lying down, with normal strength when standing. It is often linked to acetabular malignant lesions or fractures, detectable via imaging.
Area of Science:
- Orthopedics
- Radiology
- Oncology
Background:
- The clinostatic syndrome, first described by Pierre Lehman in 1953, is characterized by lower limb weakness specifically in the supine position.
- This contrasts with the absence or minimal impairment observed when the patient is standing, with normal neurological and hip passive mobility assessments.
- The syndrome is distinct from other causes of lower limb weakness due to its positional nature.
Purpose of the Study:
- To define the clinostatic syndrome and its key diagnostic features.
- To identify the common and rare etiologies associated with this syndrome.
- To highlight the diagnostic imaging modalities used for detection.
Main Methods:
- Review of clinical case definitions and historical descriptions of the clinostatic syndrome.
- Analysis of etiological factors, focusing on acetabular lesions.
- Discussion of diagnostic tools including bone scans and plain X-rays.
Main Results:
- The primary cause of clinostatic syndrome is typically a malignant lesion at the base or roof of the acetabulum.
- Less common causes include acetabular fractures or aseptic necrosis of the acetabulum.
- An inverse form of the syndrome, linked to ischial lysis, has also been documented.
Conclusions:
- Clinostatic syndrome is a specific clinical presentation indicating underlying acetabular pathology.
- Malignant lesions are the most frequent etiology, necessitating prompt diagnosis.
- Imaging techniques are crucial for identifying the structural abnormalities responsible for the syndrome.