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Updated: Jul 6, 2026
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Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
The anatomically difficult primary total hip replacement: medium- to long-term results using a cementless odular
L C Biant1, W J M Bruce, J B Assini
1The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK. lcbiant@yahoo.com
The Journal of Bone and Joint Surgery. British Volume
|April 2, 2008
Summary
This study shows the S-ROM cementless femoral component provides excellent long-term results for total hip replacement in patients with anatomical abnormalities. Ten-year follow-up demonstrates sustained clinical improvement and good radiological outcomes.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Radiology
Background:
- Total hip replacement (THR) is a common procedure, but challenging in patients with anatomical abnormalities.
- Cementless modular femoral components offer potential solutions for complex cases.
- The S-ROM component is designed for versatility in challenging primary THR procedures.
Purpose of the Study:
- To evaluate the ten-year clinical and radiological outcomes of the S-ROM cementless modular femoral component in primary total hip replacement.
- To assess the component's performance in patients with significant anatomical abnormalities.
- To determine the long-term survivorship and complication rates.
Main Methods:
- Prospective study of 55 primary total hip replacements using the S-ROM cementless modular femoral component.
- Patients had significant anatomical abnormalities making primary THR difficult.
- Clinical outcomes assessed using Harris hip score, WOMAC, and SF-12 scores.
- Radiological evaluation for component loosening and osteolysis.
Main Results:
- Excellent mean Harris hip scores at five (83) and ten (85) years post-surgery.
- Stable SF-12 and WOMAC scores at ten-year follow-up.
- No femoral component loosening or revision; minimal osteolysis observed in specific Gruen zones (1 and 7).
- Low rates of acetabular revision (3) and liner exchange (2).
Conclusions:
- The S-ROM cementless modular femoral component demonstrates excellent long-term clinical and radiological results for primary total hip replacement in anatomically challenging cases.
- The component shows good survivorship and a low complication profile at a mean ten-year follow-up.
- This implant is a viable option for complex primary total hip arthroplasty requiring a cementless modular femoral stem.
