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Summary
The Ring total hip replacement shows good outcomes, but the long femoral component is linked to fewer revisions and better results than the short version. Long prostheses are recommended for optimal patient recovery.
Area of Science:
- Orthopedic surgery
- Biomaterials science
Background:
- Total hip replacement (THR) is a common procedure for hip osteoarthritis.
- The Ring prosthesis is a type of THR implant with varying component designs.
Purpose of the Study:
- To evaluate the long-term outcomes of Ring total hip replacements.
- To compare the clinical performance of long versus short femoral components in Ring THR.
Main Methods:
- A retrospective follow-up study of 295 Ring THR patients over 2-9 years.
- Pre- and postoperative assessment using the Charnley criteria for pain, mobility, and walking.
- Analysis of revision rates, infection, loosening, and radiological findings.
Main Results:
- Significant improvements in pain, mobility, and walking ability were observed post-surgery.
- Overall mortality was low (0.3%), with low rates of deep infection (1.0% combined).
- Revision rates for loosening were higher with the short femoral component (8.6%) compared to the long component (1.0%), with poorer overall results for the short version.
Conclusions:
- The Ring prosthesis remains a viable option for total hip replacement.
- The long femoral component is associated with significantly better clinical outcomes and lower revision rates for loosening.
- Preference should be given to the long prosthesis, or a cemented prosthesis if the long version is not feasible.