Mid-Term Results of Proxima Ultra-Short Anatomical Stem: Analysis of 130 Cases

PURPOSE OF THE STUDY The aim of this study is to assess the mid-term results specific ultra-short, cementless stem in patients younger than 60 years with regard clinical and radiographic outcomes, survivorship, complication rate revisions. MATERIAL AND METHODS A consecutive series one hundred twenty-one (130 hips) at time surgery was enrolled study. Primary arthritis (33.8%) dysplastic hips (30%) were most common diagnoses. used crutches for 6 weeks protect femoral components against subsidence rotational stress. mean follow-up 118 months (range 96-156 months). RESULTS At final evaluation, Harris Hip Score 98.8. perioperative periprosthetic fracture occurred two a ceramic insert breakage observed hip. One hip had 3.5 postoperatively. In dislocation occurred. These (1.5%) revised due reasons not associated stem. has aseptic asymptomatic polyethylene inlay wear. squeezing reported. There cases loosening migration stems osteolysis all around stems. have moderate thigh pain. radiological survival 98.5% 100% after 10 on average. DISCUSSION Although improved reported standard stems, some problems still prevail: pain, proximal stress shielding, difficult removal an effort reduce these problems, Proxima ultra-short anatomical developed. Several studies show that design provides good short- mid- term results, but only limited number relatively short follow-up. Furthermore, initial fears early absence diaphyseal fixation confirmed. CONCLUSIONS provided excellent years. Key words: total arthroplasty,