From the Department of Physical Medicine and Rehabilitation, University Hospital of Ioannina, Ioannina, Greece.
Am J Phys Med Rehabil. 2021 Dec 1;100(12):e194-e197. doi: 10.1097/PHM.0000000000001852.
Heterotopic ossification is the formation of pathological bone in soft tissues. It is postulated that continuous passive motion is a helpful adjuvant in the halt of the heterotopic ossification progression and the maintenance or increase of the joint mobility. The purpose of this clinical case study is to present the effectiveness of continuous passive motion. A 46-yr-old male patient experiencing right hemiparesis arrived in our rehabilitation department with limitation on passive flexion of the right hip. On x-ray of the pelvis, immature heterotopic bone formation was found. To halt this ongoing process of heterotopic bone formation, a program of continuous passive motion was implemented. In addition, risedronate was administrated. We started the continuous passive motion at 50 degrees of flexion for 30 mins that was increased to 100 degrees for 3 hrs daily. The final range of motion at the hip was: flexion 85 degrees, extension 0 degrees, internal rotation 10 degrees, external rotation 10 degrees, abduction 10 degrees, and adduction 10 degrees. Based on our results, continuous passive motion plays a role in heterotopic ossification maturation. The effectiveness of continuous passive motion implementation against HO should be further investigated for selected cases.
异位骨化是指在软组织中形成病理性骨。有人假设，持续被动运动有助于阻止异位骨化的进展，维持或增加关节活动度。本临床病例研究的目的是展示持续被动运动的效果。一名 46 岁的男性患者因右侧偏瘫来到我们的康复科，其右侧髋关节被动屈曲受限。骨盆 X 光片发现不成熟的异位骨形成。为了阻止异位骨形成的持续过程，实施了持续被动运动方案。此外，还给予利塞膦酸钠。我们开始时将持续被动运动的角度设定为 50 度，每次 30 分钟，每天增加到 100 度 3 小时。髋关节的最终活动范围为：屈曲 85 度，伸展 0 度，内旋 10 度，外旋 10 度，外展 10 度，内收 10 度。根据我们的结果，持续被动运动在异位骨化成熟中发挥作用。应进一步研究针对特定病例的持续被动运动对异位骨化的效果。
