[Acetabular roof remodeling after varus derotation osteotomy in congenital hip dysplasia]. / Przebudowa stropu panewki stawu biodrowego po osteotomii detorsyjno-dewalgizujacej w leczeniu rozwojowej dysplazji stawu biodrowego.

The aim of this paper was to evaluate the acetabular roof remodelling process and changes of the Wiberg angle after proximal femur varus drotational osteotomy up to skeletal maturity. The analysis included 33 patients after 48 osteotomies (in 15 patients on both sides). The age at the time of surgery ranged from 1.0 to 9.8 years, mean 4.7 years. Follow-up time ranged from 7.6 to 15.9 years, mean 12.0 years. Statistical analysis showed significant differences in acetabular index, Sharp's angle, acetabular ratio and Wiberg's angle between early post-operative x-rays and radiograms taken at the last follow-up. Comparison not only of the remodelling dynamics, but also final radiological measurements confirm the necessity for surgical of severely dysplastic acetabular roof, especially in older age groups.

[Proximal femur remodeling after proximal femur varus-derotational osteotomy in treatment of developmental dysplasia of the hip]. / Przebudowa blizszego konca kosci udowej po osteotomii detorsyjno-dewalgizujacej w leczeniu rozwojowej dysplazji stawu biodrowego.

The aim of this paper was to assess proximal femur remodelling after proximal femur varus-derotational osteotomy in treatment of developmental dysplasia of the hip up to skeletal maturity. The analysis included 48 osteotomies performed in 33 children between 1st and 10th year of life. The follow-up period was on average 12 years. Supported by statistical evaluation the analysis showed persistent increase of the neck-shaft angle after proximal femur varus-derotational osteotomy, especially in the younger age groups. It also correlated strongly with the amount of varus fixed at the time of operation. On other hand femoral antetorsion corrected during surgery remained unchanged till skeletal maturity.

[The influence of the amount of variation of cervical-thoracic angle on the hip status and radiological results of the treatment of developmental hip dysplasia by torsion osteotomy]. / Wplyw wartosci waryzacji kata szyjkowo-trzonowego na przebudowe stawu biodrowego i radiologiczne wyniki leczenia rozwojowej dysplazji stawu biodrowego osteotomia detorsyjno-dewalgizujaca.

The aim of this paper was to determine the differences in hip remodeling and final outcomes of hip dysplasia treatment by fixing a certain amount of varus during varus-detorsion osteotomy of the proximal femur. The analysis included 33 children who underwent 48 osteotomies. During final follow-up at skeletal maturity it was found that the amount of varus fixed during the osteotomy influenced significantly femur remodeling and some containment measurements. However it played only slight part in acetabular remodeling. The outcomes at final follow-up proved significantly better in the group in whom a greater amount of varus was fixed.

[Surgical resection of primary soft-tissue sarcoma of the extremities]. / Chirurgiczne leczenie oszczedzajace w przypadku miesaków tkanek miekkich konczyn.

We evaluated 5 patients who had soft tissue sarcoma of the extremity treated by limb sparing surgery. All tumors were adjacent to bone, with no features of infiltration. According to the Surgical Staging System, all tumors were IIB. The mean follow-up was 13 months. To achieve wide resections of the tumors in such cases we recommend resections of the tumor with part of the bone, which is in direct contact with the tumor. Wide resection margins were achieved in all patients and none had local recurrence during the observation period.

[Limb-sparing surgical treatment in osteosarcoma]. / Chirurgiczne leczenie oszczedzajace w przypadku miesaka kosciopochodnego.

From 1998 we performed limb-sparing surgery in 6 patients with osteosarcoma. No evidence of disease or local recurrence was noted in any of the patients after a mean follow-up period of 13 months. Age at the time of operation ranged from 8 to 14 years. Wide resection margins were achieved in all patients. The results of functional evaluation according to Enneking were excellent in 5 cases and poor in one. Bony defects created by limb-sparing procedures may be reconstructed by many methods. In growing children, limb-sparing surgery needs special consideration to avoid later limb-length discrepancy and expandable prostheses have been used to anticipate this problem.

[Atypical picture of osteosarcoma situated in fibula of a 14-year-old boy]. / Nietypowy obraz miesaka kosciopochodnego kosci strzalkowej u 14-letniego chlopca.

This paper presents the case of osteogenic sarcoma, situated in fibula of 14-year-old boy. The X-ray picture of this tumor was typical of unicameral cyst, but histopathological examination showed traits of osteosarcoma. Only magnetic resonance suggested the presence of malignant neoplasm.