[Bilateral ankylosing paraarticular ossifications of the hip joint with involvement of the sciatic nerve].

In December 1997 a 48 year-old man was treated by resection of the bilateral paraarticular ankylosing ossifications that developed after 6 weeks of unconsciousness after necrotic pancreatitis. The ossifications on the posterior part of the hip joint involved a highly separated sciatic nerve. There was a bilateral osseous ankylosis of the hip joint and total denervation of sciatic nerve.

[Initial experience with implantation of the cemented Beznoska/S.V.L. total knee joint endoprosthesis].

Purpose Of The Study: The authors present the results of their first trial of a new, Beznoska/S. V. L.

[Distal shortening osteotomy of the metatarsals using the Weil technique: surgical treatment of metatarsalgia and dislocation of the metatarsophalangeal joint].

Purpose: Weil technique of the distal shortening osteotomy of metatarsal is a relatively new method of the surgical treatment of metatarsalgia and dislocation of metatarsophalangeal (MTP) joints. A retrospective study evaluates the first experience in Weil osteotomy at the authors' department.

Material: Between May 1999 and the end of 2000 twelve patients (14 feet) were operated on in which the Weil technique of the osteotomy was performed on 28 metatarsals.

[Revision of total hip replacement operations at the Orthopedic Clinic IPVZ in Prague, 1999].

Purpose Of The Study: The aim of the work is to evaluate the results of revision surgeries of total hip replacements at the Orthopaedic Department IPVZ in 1999.

Material: Revision surgery of 61 THR was performed at the Orthopaedic Department IPVZ in 1999. Most of them (54) were reoperated for aseptic loosening of the cup or both components, 4 patients for aseptic loosening of the stem, 1 patient was reoperated for recurring dislocation of THR and 2 patients for septic loosening.

[The Zweymuller endoprosthesis in hip joint revision surgery].

Purpose Of The Study: The aim of the study is the verification of the applicability of the Zweymüller system of total hip replacement in dependence on the size of defects of acetabulum and femur and evaluation of early results in patients operated on in 1998 and 1999.

Material: In 1998 and 1999 we reimplanted 125 total hip replacements. In 60 revision surgeries we used at least one component of Zweymüller Bicon Plus system.