Jyrki Kankare

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STUDY DESIGN A randomized controlled trial. OBJECTIVES To assess the effectiveness of decompressive surgery as compared with nonoperative measures in the treatment of patients with lumbar spinal stenosis. SUMMARY OF BACKGROUND DATA No previous randomized trial has assessed the effectiveness of surgery in comparison with conservative treatment for spinal(More)
STUDY DESIGN The presence and abundance of inflammatory cells was studied immunocytochemically in lumbar disc herniations (DH) and macroscopically normal discs for comparison. OBJECTIVES The objective of the study was to characterize inflammatory cells that appear in herniated disc tissue and to study the relative abundance of various types of(More)
Bioactive glass (BAG)-S53P4 is an osteoconductive bone substitute with proven antibacterial and bone bonding properties. In a multicentre study 11 patients with verified chronic osteomyelitis in the lower extremity and the spine were treated with BAG-S53P4 as a bone substitute. The cavitary bone defect and the surrounding of a spinal implant were filled(More)
Biodegradable self-reinforced polyglycolide screws and rods were constructed for internal fixation of fractures in cancellous bone. The self-reinforced texture was achieved by embedding polyglycolide fibres in a polyglycolide matrix. In a prospective clinical study, a total of 37 patients at least 65 years of age with displaced malleolar fractures were(More)
29 alcohol abusers with displaced malleolar fractures were randomized to treatment with biodegradable self-reinforced polyglycolide screws or metallic implants. During an average follow-up time of 7 (0-15) months, 8 patients out of 16 treated with biodegradable fixation had postoperative redisplacement of the fracture and 6 were reoperated. 1 fracture in 13(More)
We randomised a total of 94 patients with long-standing moderate lumbar spinal stenosis (LSS) into a surgical group and a non-operative group, with 50 and 44 patients, respectively. The operative treatment comprised undercutting laminectomy of stenotic segments, augmented with transpedicular-instrumented fusion in suspected lumbar instability. The primary(More)
The treatment of fractures of the distal third of the tibia remains still controversial. It is often difficult to get and retain good reduction by non-operative or nailing methods. Open reduction and plate fixation offers good reduction and retention of the achieved position. However, increased soft tissue damage and high complication rate has led to search(More)
Six patients with displaced split-depression-type tibial condylar fractures were treated with absorbable, self-reinforced polyglycolide screws. One patient underwent reoperation because of an unacceptable primary fracture reduction unrelated to the implant material. The others healed well, with good functional and anatomical results despite one slight(More)
BACKGROUND AND AIMS Bioactive glass S53P4 is an antibacterial bone substitute with bone-bonding and osteostimulative properties. The bone substitute has been successfully used clinically in spine; trauma; orthopedic; ear, nose, and throat; and cranio-maxillofacial surgeries. Bioactive glass S53P4 significantly reduces the amount of bacteria in vitro and(More)