Background and purpose - There is a general call for phased introduction of new implants, and one step in the introduction is an early evaluation of micromotion. We compared the micromotion in the Triathlon and its predecessor, the Duracon total knee prosthesis, concentrating especially on continuous migration over 5 years of follow-up. Patients and methods - 60 patients were randomized to rece...

We describe a case of Salmonella enteritidis infection of a prosthetic knee joint that was cured with ceftriaxone therapy for 6 weeks and replacement of the tibial component of the prosthesis. Eleven other cases of salmonella prosthetic joint infection have been reported in the English-language literature. Five infections occurred within 20 days of prosthesis placement, and seven occurred sever...

BACKGROUND Special high-flexion prosthetic designs show a small increase in postoperative flexion compared to standard designs and some papers show increased anterior knee pain with these prosthesis. METHODS A prospective double blind randomized controlled trial investigates the difference in flexion and anterior knee pain between standard and high-flexion total knee arthroplasty. In total 47...

BACKGROUND Abiotrophia species have rarely been implicated in osteoarticular infections. We report one case of an A. defectiva knee prosthesis infection. CASE PRESENTATION A 71-year-old man of Italian origin presented with pain and swelling of the knee four years after the implantation of a total knee replacement prosthesis. While standard culturing of the synovial fluid resulted in no isolat...

©2006 British Editorial Society of Bone and Joint Surgery doi:10.1302/0301-620X.88B2. 16381 $2.00 J Bone Joint Surg [Br] 2006;88-B:141-8. Functional fracture bracing, described in 1967, 1 was inspired by the patellar-tendonbearing prosthesis which had recently been developed for below-knee amputees. This prosthesis had eliminated the traditional thigh corset and allowed the transfer of weight-b...

We describe a patient with multiple sclerosis (MS), who developed recurrent dislocations after total knee arthroplasty. She had both knees replaced using similar mobile-bearing knee prostheses, but the outcome was worse in the leg which was more severely affected with MS.

BACKGROUND Amputees walk with an asymmetrical gait, which may lead to future musculoskeletal degenerative changes. The purpose of this study was to compare the gait asymmetry of active transfemoral amputees while using a passive mechanical knee joint or a microprocessor-controlled knee joint. METHODS Objective 3D gait measurements were obtained in 15 subjects (12 men and 3 women; age 42, rang...

Objective The purpose of this study was to establish the feasibility of manipulating a prosthetic knee directly by using a brain-computer interface (BCI) system in a transfemoral amputee. Although the other forms of control could be more reliable and quick (e.g., electromyography control), the electroencephalography (EEG)-based BCI may provide amputees an alternative way to control a prosthesis...

The relationship between gait and prosthetic design was studied during level walking and stair-climbing for twenty-six asymptomatic patients after total knee replacement. An age-matched group of fourteen control subjects was also studied. Five designs of total knee replacement Geomedic, Gunston, total condylar, duopatellar, and Cloutier were used. Differences in gait could be identified on the ...

Because conventional above-knee prostheses are passive type device with constant mechanical properties, knee joint motions are not similar to that of normal persons. On the other hand, active type prostheses can improve swing phase gait but these are expensive, heavy and consume large energy. So the semi-active type prostheses are presented. We propose to use the rotary MR damper. The torque di...