Proximal Junctional Failure following long-segment Instrumentation for XXXX with @entity74 .

@entity1 @entity4916 @entity174 @entity602 @entity5039 @entity1746 @entity179 @entity74 @entity85
STUDY DESIGN:                 <AbstractText Label="CASE REPORT" NlmCategory="METHODS"/>                <AbstractText Label="OBJECTIVE" NlmCategory="OBJECTIVE">We report a case of proximal junctional failure at the ankylosed, but not the mobile, junction following segmental instrumented fusion for @entity179 with @entity74 . SUMMARY OF BACKGROUND DATA: Proximal junctional failure (PJF) and proximal junctional kyphosis (PJK) are important complications that occur subsequent to long-segment instrumentation for correction of adult @entity85 . Thus far, most studies have focused on the mobile junction as a site at which PJK/PJF can occur, and little is known about the relationship between PJK/PJF and ankylosing spinal disorders such as @entity5039 ( @entity5039 ). METHOD: The @entity1 was an 82-year-old @entity1 with @entity179 . She had abnormal confluent @entity4916 in the anterior longitudinal ligaments from Th5 to Th10. The @entity1 was treated operatively with spinal instrumented fusion from Th10 to the sacrum. RESULTS: Four weeks subsequent to initial surgery, the @entity1 developed progressive @entity1746 paresis caused by the uppermost instrumented @entity174 (Th10) and adjacent subluxation (Th9). Extension of fusion to Th5 with decompression at Th9-10 was performed. However, the @entity1 showed no improvement in neurological function. CONCLUSION: PJF can occur at the ankylosing site above the uppermost instrumented vertebrae following long-segment instrumentation for adult @entity85 . PJF in the ankylosed spine may cause severe @entity174 instability and @entity602 . The ankylosed spine should be integrated into the objective determination of materials contributing to the appropriate selection of fusion levels.
