Goodacre John
Annu Int Conf IEEE Eng Med Biol Soc. 2016 Aug;2016:2382-2385. doi: 10.1109/EMBC.2016.7591209.
From sit-stand-sit movements performed by healthy and osteoarthritic knees in three different age bands, this paper presents the investigation of the relationship between joint angular movement measured using electro-goniometers and acoustic emission measured using piezoelectric sensors. By partitioning joint movement in each sit-stand-sit cycle into sub-movement phases based on ascending and descending as well as acceleration and deceleration, the statistical analysis reveals aged and osteoarthritic knees exhibiting increased asymmetry and more variable angular movement compared with young and age-matched healthy knees, particularly in the descending-deceleration phase. With further evidence of a clear difference in the number of acoustic emission events detected from different knee groups, the study suggests the descending-deceleration phase likely to be most informative for quantitative assessment of knee aging and condition.
本文通过对三个不同年龄组的健康膝关节和骨关节炎膝关节进行从坐起到坐下的动作研究，探讨了使用电子测角仪测量的关节角运动与使用压电传感器测量的声发射之间的关系。通过根据上升和下降以及加速和减速将每个坐起到坐下周期中的关节运动划分为子运动阶段，统计分析表明，与年轻且年龄匹配的健康膝关节相比，老年膝关节和骨关节炎膝关节表现出更大的不对称性和更可变的角运动，尤其是在下降减速阶段。有进一步证据表明不同膝关节组检测到的声发射事件数量存在明显差异，该研究表明下降减速阶段可能对膝关节老化和状况的定量评估最具信息量。
