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A new method for closed lavsanoplasty of the knee ligaments and an instrument suggested for its performance are described. The method is applied successfully in the clinic for the treatment of patients with neglected ruptures of the knee ligaments. The article shows the advantages of the method over those previously existing, which is evidence that its wide use in Soviet medical practice is promising. The work also deals with the force parameters of stretching of the implanted ligament, which were determined for the first time, in experiments and in the clinic, owing to the created measuring device Surgical apparatus for lavsanodesis.

The work is based on the analysis of examination and treatment (external +transosseous osteosynthesis) of 172 patients with ununited fractures and false joints of the long tubular bones complicated by purulent infection and posttraumatic osteomyelitis. All patients were divided into 4 clinical groups according to the activity of the purulent wound infection and choice of the surgical tactics. Some risk factors were taken into consideration in choosing the tactics of treatment and predicting the outcomes. The clinical course of the wound process in the groups of the patients studied and the errors and complications of operative treatment are analysed. The necessity for active postoperative management of patients and endolymphatic and +intra-arterial administration of antibiotics is substantiated. Good and satisfactory results of treatment were produced in 85.6% of patients.

The authors have proposed a method of surgical treatment of posttraumatic coxa vara. The treatment was given to 19 patients aged 16 to 43 years. The essence of the operation consists in oblique intertrochanteric osteotomy of the femur, osteotomy of the lesser trochanter and a muscular pedicle graft formation from the lesser trochanter which is used in grafting the defect observed after the correction of the spatial position of the proximal end of the femur.

The results of treatment of 315 cases of osteogenic sarcoma are presented. Available methods of primary tumor therapy fail to prevent dissemination of neoplastic disease by blood circulation. However, following a prophylactic course of chemotherapy (adriamycin, vincristine, cyclophosphamide, sarcolysine), 3- and 5-year survival rates in 45 cases of limb amputation for osteosarcoma increased to 38.1% and 30.5%, respectively. No recurrences were observed in 39 patients with extensive segmental resection of bone who preoperatively received intra-arterial infusions and radiation therapy; the 3-year survival rates were a high as 43.9% and patients showed good performance. The method offers good advantages in the treatment of patients with osteogenic sarcoma.

A method of the operative treatment of the II stage of aseptic necrosis of the femur by subchondral autoplasty (with bone chips with crystal chymotrypsin) is described. In 18 of 22 patients operated upon good results were noted, in 3 patients results were satisfactory during 2-5 years.

The method and results of intercondylar endoprosthesis of the knee joint in combination with the removal from the joining surfaces of the epicondyle of the articular cartilage with the subchondral plate are described. The method was used in experiment in 25 dogs on 27 joints. Early and persistent recovery of the joint function and the supporting abilities of the extremity was achieved. The proposed method of endoprosthesis of the knee joint is thought to be expedient in the clinical practice.