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[Hip endoprosthesis shaft fractures - a clinical and technological material study]
Zeitschrift Fur Orthopadie Und Ihre Grenzgebiete
|January 1, 1983
Summary
Fractures of hip prosthesis shafts are often caused by loosening due to implantation defects, not material faults. Early radiological diagnosis is crucial for detecting hairline cracks and preventing further complications.
Area of Science:
- Orthopedic Surgery
- Biomaterials Engineering
- Radiology
Background:
- Fractures of hip prosthesis shafts are a significant complication in orthopedic surgery.
- Implantation defects and prosthesis loosening are potential risk factors.
Purpose of the Study:
- To analyze the clinical and radiological findings in hip prosthesis shaft fractures.
- To investigate the etiological factors contributing to these fractures, including material and production aspects.
Main Methods:
- Retrospective analysis of 19 clinical cases treated at University Orthopedic Clinics.
- Materials investigation of 18 broken hip prosthesis shafts.
Main Results:
- Gradual pain increase post-stress is the primary clinical symptom; acute pain is atypical.
- Radiological diagnosis is essential for identifying hairline fractures.
- A high percentage of implantation defects were observed, leading to prosthesis loosening and increased fracture risk.
- In most cases, prosthesis loosening was the primary cause of fracture; only 3 cases were attributed to material or production defects.
Conclusions:
- Prosthesis loosening, often stemming from implantation defects, is the predominant cause of hip prosthesis shaft fractures.
- Early radiological detection of subtle fractures is critical for timely intervention.
- While material or production faults can occur, they are less common etiological factors compared to loosening.