Acta Chir Orthop Traumatol Cech. 1993; 60(5):284-286
[Experience with non-cemented stems in Schenker hip prosthesis].
- Ortopedická klinika ILF, FNsP na Bulovce, Praha.
In 1986-1988 at the Orthopaedic clinic of the Institute for Postgraduate Medical Training 56 stems on non-cemented total endoprostheses of the hip joint type Schenker were implanted. The non-cemented stem was combined in all patients with a cemented socket Poldi. The endoprosthesis was indicated in particular in young patients in 59% in hip joints affected with secondary postdysplastic arthritis of the hip joint. The group was checked by Harris' method, the mean follow-up period in 1992 was 58 months. Of 36 followed up patients 21 operated patients reported pain in the area of the hip joint, 10 patients used analgetics. In nine patients reimplantation of the non-cemented Schenker stem was performed on account of aseptic loosening, in 11 patients the X-ray check revealed obvious signs of aspectic loosening associated with subjective complaints. The dependence of aseptic loosening on the quality of primary implantation is marked. In patients with perfect cortical contact of the stem aseptic loosening developed in 27% of the patients, in patients with inadequate cortical contact aseptic loosening was recorded in 80% of the operated patients. The general evaluation according to Harris comprised 42% excellent results, 30% good results, 14% satisfactory results and 14% poor results. This evaluation does not include patients who on account of pain and loosening of the femoral Schenker component were already re-operated. Because of the considerable number of complications implantation of this type of prosthesis was discontinued at the authors' department.
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