Sonographic Diagnosis and Treatment of Fabella Syndrome: A Neglected Posterolateral Knee Pain

1Department of Medicine, Koo Foundation Sun Yat-Sen Cancer Center, Taiwan, R.O.C. (Previous institutional affiliation when research was conducted) 2Department of Physical Medicine & Rehabilitation, Taipei Veterans General Hospital, National Yang Ming Chiao Tung University, Taiwan, R.O.C. Correspondence: Chung-Lan Kao, MD, PhD, Department of Physical Medicine & Rehabilitation, No.201, Sec. 2, Shipai Rd., Beitou District, Taipei City, Taiwan 11217, R.O.C. Phone: 886-2-28757364 Ext 513 E-mail: [email protected] Competing Interests: None declared. Funding, grants or equipment provided for the project from any source: There was no financial support for this manuscript. Financial benefits to the authors: There was no financial benefits to the authors. Details of any previous presentation of the research, manuscript, or abstract in any form: This manuscript has not been previously presented.