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[Spinal internal fixator--analysis of problems in 28 cases].

¹Unfallkrankenhaus Wein-Meidling.

Wiener Klinische Wochenschrift

|January 1, 1992

Summary

Management of thoracolumbar and lumbar spinal fractures using internal fixators revealed significant issues. Nut loosening and implant corrosion were common problems, potentially compromising treatment outcomes.

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Area of Science:

Orthopedic Surgery
Biomedical Engineering

Background:

Internal fixator systems are used for thoracolumbar and lumbar spinal fractures.
Previous versions of the internal fixator had design limitations.

Purpose of the Study:

To review problems encountered in managing spinal fractures with the internal fixator.
To identify common complications and their potential causes.

Main Methods:

Retrospective analysis of 28 patients treated between 1986 and 1988.
Evaluation of implant-related complications.

Main Results:

Common problems included nut loosening, major corrosion of screws and clamps, large implant volume, and non-availability of intermediate rod lengths.
Nut loosening, occurring within 27 days, can lead to loss of reduction and jeopardize treatment outcomes.
Corrosion defects may necessitate implant removal after fracture healing.

Conclusions:

Nut loosening appears inherent to the internal fixator system, regardless of fracture characteristics or surgical factors.
Potential for implant corrosion warrants consideration for removal after healing.
Further improvements in internal fixator design are needed to address these management challenges.

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