Distal interlocking screws with a modular revision stem for revision total hip arthroplasty in severe bone defects.
prospective_cohort · Level II
Where this comes from
- Record sourced from PubMed, PMID 19577879.
- Also identified by DOI 10.1016/j.arth.2009.05.019.
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Abstract
A prospective study of 15 patients was designed to examine whether the modular cementless revision stem (Revitan curved; Zimmer GmbH, Winterthur, Switzerland) is suitable for stem revisions with a defective isthmus when distal interlocking screws are also used for fixation. During a follow-up period of 35.4 +/- 11.4 months (24-70 months), there was one stem loosening with screw breakage in a case of a stem that was too thin. According to Engh et al, bony ingrowth fixation of the stem occurred in 12 cases and stable fibrous fixation in 2 cases. The Harris Hip Score rose continuously from 44.7 +/- 12.9 points preoperatively to 75 +/- 10 points at 24 months. This concept of additional stem fixation with distal interlocking screws represents a useful treatment option for revision arthroplasty in rare cases of a defective isthmus.
Medical subject headings
- Arthroplasty, Replacement, Hip
- Bone Screws
- Femur
- Hip Prosthesis
- Osteoarthritis, Hip
Anatomy
- femur
- hip