J Korean Orthop Assoc.  2000 Dec;35(6):891-896.

Radiological Analysis of the Tapered Femoral Stem after Cementless Hip Arthroplasty: Minimum 5 years follow-up

• Choy WS
• Ahn JH
• Hwang IS

Abstract

PURPOSE
We reviewed radiological mid-term results of cementless hip replacement using Mallory-Head tapered titanium femoral stem.
MATERIALS AND METHODS
Forty six patients, 50 hips were followed for more than 5 years. Mean age was 56 years, and mean follow-up period was 6.8 years. Radiologically changes in alignment, subsidence and wear rate were measured. Radiolucent line, endosteal spot weld and osteolysis were also assessed according to Gruen zones.
RESULTS
All stems showed stable fixation, and radiolucent lines were observed in noncoated zones of 13 cases (26%) . Osteolysis was observed around the proximal stem in 16 cases (32%) , but it did not progress distally.
CONCLUSION
With minimum follow-up of 5 years, the tapered titanium femoral stem showed good radiological results, however osteolysis needs more long-term follow-up.

Keyword

Cementless hip arthroplasty; Tapered titanium femoral stem

MeSH Terms

Arthroplasty*
Follow-Up Studies*
Hip*
Humans
Osteolysis
Titanium
Titanium