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Stupina T.A.,Ilizarov Scientific Center for Restorative Traumatology and Orthopedics
Morfologii{combining double inverted breve}a (Saint Petersburg, Russia) | Year: 2013

Light microscopy and computerized morpho- and stereometry were used to examine the changes in the knee joint articular cartilage and synovial membrane studied during experimental canine shin lengthening by 15% of initial length by autodistraction at increased rate - 3 mm per day with switching on the automatic device 120 times. By the end of distraction period (10 days) the destructive changes in articular cartilage were more marked in the superficial and deep zones, synovitis of moderate and mild degree was observed accompanied by the destructive changes in the blood vessels and nerves of the subsynovial layer. Regeneration of articular cartilage was incomplete, and regressive neurovascular changes persisted in synovial membrane 30 days after the device removal. Comparison of these results with the previous data obtained using the distraction rate of 3 mm applied 180 times, leads to the conclusion, significant for functional prognosis, of the worsening the parameters of structural cartilage recovery in case of distraction pitch increase from 0.017 mm to 0.025 mm.

Shchurov V.A.,Ilizarov Scientific Center for Restorative Traumatology and Orthopedics | Dolganova T.I.,Ilizarov Scientific Center for Restorative Traumatology and Orthopedics | Dolganov D.V.,Ilizarov Scientific Center for Restorative Traumatology and Orthopedics
Biomedical Engineering | Year: 2014

A dynamometer for measuring the strength of the femoral muscles (crus and femur flexors and extensors) was developed. Dynamometric parameters of femoral muscles in the norm and their dependence on age (7-40 years old) were determined. Two working modes of the muscles of the hip joint in patients with ankylosis were highlighted. The pathognomonic symptoms include the lack of hip joint mobility and fixed abnormal position of the extremity. Any extremity motion is performed at the expense of the healthy part of the hip joint. The results of the tests allowed therapy tactics to be elucidated and corrected. © 2014 Springer Science+Business Media New York.

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