Periosteal transplantation to the rabbit patella.

Autologous periosteal transplantation (without chondrocyte cell transplantation) for treating traumatic articular cartilage defects of the patella gives pain relief in uncontrolled clinical studies. To study the whole transplanted area macroscopically and microscopically, animal studies are motivated. In this pilot study, we reproduce the surgical technique for periosteum transplantation on human patella to a rabbit model. A full-thickness cartilage defect of the whole patella was created in eight adult female rabbits. The defect was treated with autologous periosteal transplantation. After surgery, the rabbits were allowed free activity. This is the difference compared to the treatment in humans, where our group uses CPM for 5 days and non-weight-bearing for 12 weeks. After 21 weeks, there was a diffuse synovitis in all transplanted knees, and in five of eight knees there were signs of osteoarthritis in the patello-femoral joint. Histologically, in three animals, small islands of hyaline cartilage surrounded by fibrocartilage were seen in the transplanted area. In the other five animals, fibrocartilage was the predominant tissue. In contrast to previous experimental studies using a rabbit model, we did not achieve hyaline cartilage resurfacing.

Reliability of the Body Awareness Scale-Health.

In physical therapy the clinical assessment Body Awareness Scale-Health (BAS-H) focusing on the quality of movements and movement behaviour has previously been studied for validity. The aim of this study was to address the inter-rater reliability and test-retest reliability in three groups. The groups assessed were: patients in psychiatric care with eating disorders (n = 26), patients in rehabilitation of prolonged musculoskeletal pain (n = 22) and healthy individuals (n = 22). Results revealed inter-rater reliability (n = 70) of the BAS-H total to be 79.9 % with acceptable agreement (accepting one scale-step of difference) and 48.7% with perfect agreement. Weighted Kappa ranged between 0.34 and 0.92. Test-retest reliability (n = 54) as a mean for both raters were found to be 90.5% for the BAS-H total with acceptable agreement and 60.4% with perfect agreement. Weighted Kappa ranged between 0.65 and 0.92. The BAS-H seems to be a reliable assessment in the rehabilitation of patient with prolonged pain, psychiatric disorders and healthy controls when used according to the manual. The authors, however, suggest some revisions.