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Introduction. Healing of finger flexor tendons after reconstructive operations takes place under the conditions of scary changes in fibro-osseous canals. Determining factor for the functional outcome is the intensity of commissural process around the flexor tendon. The problem of conventional treatment is the impossibility to ensure the ingrowth of fibrous tissue into the scar zone with simultaneous formation of smooth canal wall.Patients and methods. Eighty six patients with 94 finger flexor tendon injuries along the fibroosseous canals were operated on. Eighteen operations with primary delayed deep flexor tendon suture, 8 operations with repeated suture and 7 operations of tendon tenolysis after primary suture were supplemented with the proposed method of temporary isolation of the reconstructed tendon within a dissected polymeric tube. The tube isolates the tendon from blood clots, forms the smooth canal wall.Results.Finger function was assessed in 6 and 12 months. After operations supplemented by temporary isolation of the tendon within the polymeric tubes excellent and good results were achieved at shorter terms, no tenolysis was required and one-step tenoplasty could be performed instead of two-step reconstruction.

Comparison of biochemical composition and biophysical properties showed the pathogenetic expediency of blood serum use as a corrector of synovial environment in joints affected by osteoarthritis. For serum modification the patients were preliminary given a single dose of drug only. Then patient's blood was collected in the period of its maximum saturation by preparation. Serum obtained was applied in patients with knee joint osteoarthritis of 2-3 stages using three intra-articular injections. The evaluation of treatment results 5-6 months after treatment completion showed a significantly better and more stable therapeutic effect in test group as compared with patients from control group. Positive effect was stipulated by pain decrease, normalization of articular tissue trophicity, depression of local inflammation and cartilage lubrication improvement.