Transient lateral patellar dislocation: Review of imaging findings, patellofemoral anatomy, and treatment options

被引：27
作者：
Earhart C. [1 ]
Patel D.B. [1 ]
White E.A. [1 ]
Gottsegen C.J. [1 ]
Forrester D.M. [1 ]
Matcuk G.R. [1 ]
机构：
[1] Department of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033
来源：
Emergency Radiology | 2013年 / 20卷 / 1期
关键词：
Patellofemoral anatomy; Transient lateral patellar dislocation;
D O I：
10.1007/s10140-012-1073-9
中图分类号：
学科分类号：
摘要：
Transient patellar dislocation is a common sports-related injury in young adults. Although patients often present to the emergency department with acute knee pain and hemarthrosis, spontaneous reduction frequently occurs, and half of cases are unsuspected clinically. Characteristic magnetic resonance imaging (MRI) findings often lead to the diagnosis. The purpose of this review is to illustrate the MRI findings of lateral patellar dislocation and concomitant injuries, such as kissing contusions of the medial patella and lateral femoral condyle; osteochondral and avulsion fractures; and injuries of the medial patellofemoral ligament/retinacular complex. This article will also briefly review patellofemoral anatomy and passive, active, and static stabilizers. Predisposing factors for patellar instability, including trochlear dysplasia, patella alta, and lateralization of the patella or tibial tuberosity and their relevant measurements will also be highlighted. Treatment options, including surgery, such as medial patellofemoral ligament reconstruction, tibial tuberosity transfer, and trochleoplasty, and their postoperative imaging appearances will also be discussed. © 2012 Am Soc Emergency Radiol.
引用
收藏
页码：11 / 23
页数：12
相关论文
共 32 条
  • [1] Neubert M., Steinbruck K., Patellar dislocation in athletes. Arthroscopic diagnosis and therapy, Unfallchirurg, 94, 2, pp. 73-76, (1991)
  • [2] Sperner G., Benedetto K.P., Glotzer W., The value of arthroscopy following traumatic patellar dislocation, Sportverletz Sportschaden, 2, 1, pp. 20-23, (1988)
  • [3] Kirsch M.D., Fitzgerald S.W., Friedman H., Rogers L.F., Transient lateral patellar dislocation: Diagnosis with MR imaging, American Journal of Roentgenology, 161, 1, pp. 109-113, (1993)
  • [4] Casteleyn P.P., Handelberg F., Arthroscopy in the diagnosis of occult dislocation of the patella, Acta Orthopaedica Belgica, 55, 3, pp. 381-383, (1989)
  • [5] Crotty J.M., Snow R.D., Brogdon B.G., DeMouy E.H., Magnetic resonance imaging of trauma patterns in the knee, Emergency Radiology, 5, 4, pp. 237-244, (1998)
  • [6] Robinson R.J., Et al., Wii knee, Emerg Radiol, 15, 4, pp. 255-257, (2008)
  • [7] Zaidi A., Et al., MRI of traumatic patellar dislocation in children, Pediatr Radiol, 36, 11, pp. 1163-1170, (2006)
  • [8] Ali S.A., Helmer R., Terk M.R., Analysis of the patellofemoral region on MRI: Association of abnormal trochlear morphology with severe cartilage defects, AJR Am J Roentgenol, 194, 3, pp. 721-727, (2010)
  • [9] Elias D.A., White L.M., Imaging of patellofemoral disorders, Clinical Radiology, 59, 7, pp. 543-557, (2004)
  • [10] Senavongse W., Amis A.A., The effects of articular, retinacular, or muscular deficiencies on patellofemoral joint stabilitiy, Journal of Bone and Joint Surgery - Series B, 87, 4, pp. 577-582, (2005)
1234