Athanasios P. Fortis

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We investigated the strain pattern developed in the anterior and posterior part of the fixed patella during knee motion. Eight fresh cadaver knees were used but two were excluded because of non reliable measurements due to misplacement of gauges. Two strain gauges were bonded in the midline of the anterior and two in the posterior surface of the patella.(More)
A cadaveric biomechanical study was performed to investigate the fracture energy absorbed by strips of bone from the proximal femur in relation to age and gender, under impact loading conditions. Four groups (young male, young female, old male, old female) of four cadaveric proximal femurs were used in each case. Four bone strips were taken from the neck(More)
A case of an adverse reaction to the stabilizing bolts after an ACL reconstruction is presented. A 21-year-old patient had an ACL reconstruction using the Mark II system. Six months post op, he presented to clinic having formed a pretibial swelling with serous discharge. There was mild tenderness over the femoral scar. Successive cultures of the tibial cyst(More)
PURPOSE To evaluate the functional outcomes and complications after endoscopically assisted percutaneous repair of Achilles tendon rupture. METHODS An arthroscopically assisted percutaneous repair was performed in 20 patients between the ages of 28 and 47 years. Two patients were suffering from a long-standing rupture. Follow-up was 2.5 years. Evaluation(More)
We report our experience in conservative treatment of 30 patients with trigger digits followed up for an average of 22.3 months. In 26 patients (86.6%) the pain disappeared and the others experienced a remarkable improvement. Locking resolved in 23 patients (76.6%): in 19 patients immediately after the injection and in the other four gradually thereafter.(More)
Nontraumatic, hematogenous osteomyelitis of an unfused patella occurred in a 62-year-old female patient, 50 years after septic arthritis of the knee was treated in childhood by femorotibial fusion. This extremely rare condition was successfully treated by a patellectomy, continuous irrigation, and antibiotics. This occurrence seems not to have been reported(More)
Fracture fixation using rigid plates leads to direct bone union, but it also may lead to complications because of stress protection osteopenia. This study aims to compare the mechanical characteristics restored during the callus formation after an osteotomy is fixed with two types of internal plate fixation. Twenty-four adult female sheep were divided(More)
OBJECTIVE To evaluate and present our current clinical experience in the treatment of closed and open tibial shaft fractures using the expandable intramedullary nailing system. DESIGN Prospective study. SETTING One level-1 trauma centre. PARTICIPANTS Twenty-six patients with acute tibial shaft fractures with at least 10 cm of intact cortex on both(More)
OBJECTIVE This study examines viscoelastic properties of the 'unaffected' tibial condyle in unicompartmental osteoarthritic knees, in order to determine whether to preserve it or not in knee replacement operations. DESIGN The viscoelastic properties of longitudinal strips of cartilage and subchondral bone from osteoarthritic and healthy knees were(More)
PURPOSE The purpose of this study was to evaluate the biomechanical results of meniscal repair in vitro by a nitinol suture and compare them with Ethibond (Ethicon, Somerville, NJ) and nylon. METHODS The 6 testing groups consisted of nitinol, Ethibond, and nylon sutures (No. 2-0 and No. 3-0). Sixty bovine menisci with a vertical longitudinal tear were(More)