Biomedical subjects

I Onna

Publications and source records attributed to I Onna.

3 recordsLinked to original sources

PubMed1992

A Swedish knee-cage for stabilizing short below-knee stumps.

Stump length is an important factor in attaining successful prosthetic rehabilitation in below-knee (BK) amputees. Stability of the stump-prosthesis complex is impaired in the case of a stump shorter than 10 cm. Thus, fitting a prosthesis to a BK amputee with a stump which is very short often requires the use of different prosthetic techniques. In this work, the authors suggest the use of a Swedish knee-cage attached to a conventional patellar-tendon-bearing prosthesis as an alternative solution in the case of a short BK stump. Objective evaluation was performed by an analysis of gait and the foot-ground reaction forces. The results obtained indicate an improvement in all the measured parameters resulting from the modified stump-prosthesis complex.

Adult↗

PubMed1986

A modified knee disarticulation. A case report.

A 36-year-old man with posttraumatic transarticular knee (TK) amputation illustrates the difficulties of prosthetic fitting. The excessively long and deformed stump was successfully overcome by an unusual surgical technique consisting of the shortening of the femoral bone by an osteotomy and plate fixation with preservation of the integrity of the condyles to correct the deformity. A short review of the literature concerning the advantages and limitations of TK amputations demonstrates some of the previously-reported surgical techniques.

Adult↗

PubMedDate not supplied

The control of genu recurvatum by combining the Swedish knee-cage and an ankle-foot brace.

Genu recurvatum is a consequence of a poor control over the knee joint due to muscle weakness, impaired tonus and deficit in joint proprioception. Uncontrolled locking of the knee during ambulation causes recurrent microtrauma which leads to degenerative changes and instability. Known methods to control hyperextension of the knee during ambulation often fail. We have used the Swedish knee-cage attached to ankle-foot brace in an attempt to improve control over the knee in three patients. Gait analysis was performed to evaluate the effectiveness of this combined orthosis. Quality of gait improved, as demonstrated by a decrease in stance time asymmetry in the order of 45%; stride increased by 29% and speed of ambulation increased by 72%.

Braces↗