Onibere Oruaro Adebayo, Stevenson Iain, Gill Fraser Jonathan
Trauma and Orthopaedic Department, Dr Gray's Hospital, Elgin IV30 1SN, UK.
Trauma and Orthopaedic Department, Aberdeen Royal Infirmary, Aberdeen, UK.
Radiol Case Rep. 2017 Apr 21;12(3):549-551. doi: 10.1016/j.radcr.2017.03.002. eCollection 2017 Sep.
Unicondylar knee replacement is a relatively common elective orthopedic procedure but is not often seen in the Emergency Department setting. Familiarity with normal clinical and radiological appearances is difficult to gain. Dislocation of the mobile bearing component "spacer" is a known complication of unicondylar knee replacements, and these patients will initially present to the accident and Emergency Department. In this setting, an accurate and prompt diagnosis is necessary to appropriately manage the patient's condition. There is normally a radiological challenge in identifying dislocated mobile bearings on plain radiographs. These patients may need to have further imaging, such as a computer tomographic scan to identify the dislocated mobile bearing.
单髁膝关节置换术是一种相对常见的择期骨科手术，但在急诊科并不常见。很难熟悉其正常的临床和放射学表现。活动轴承部件“垫片”脱位是单髁膝关节置换术已知的并发症，这些患者最初会前往急诊科就诊。在这种情况下，准确及时的诊断对于妥善处理患者病情至关重要。在普通X线片上识别脱位的活动轴承通常存在放射学挑战。这些患者可能需要进一步的影像学检查，如计算机断层扫描，以识别脱位的活动轴承。
