Zheng Chao1, Liu Junpeng1, Du Junjie1, Ma Wei1, Chen Xuanyu2, Wu Ji1
1Department of Orthopedics, Air Force Medical Center, Air Force Medical University, Beijing 100142, China; 2Department of Orthopedics, Capital Medical University Electric Teaching Hospital, Beijing 100173, China
Abstract：ObjectiveTo explore the clinical diagnostic features and the causes of misdiagnosis of Keegan′s disease. Methods3 patients with Keegan's disease treated in Orthopedics Department of Air Force Medical Center Affiliated to Air Force Medical University from March 2018 to December 2020 were selected. Their diagnosis, differential diagnosis and outcomes were analyzed, and the relevant literatures were reviewed. ResultsThere were 3 patients, 1 male and 2 females, aged 36, 36 and 47 years old, respectively. All the patients had restricted abduction of the right shoulder without obvious inducement, and lateral soreness when lifting the right upper arm. The muscle strength of deltoid muscle and biceps brachii of the right upper limb was significantly reduced, with no symptoms and signs of spinal cord damage and paresthesia. There were typical selective “high spots” in MRI T2WI, and clear neurological damage of the deltoid and biceps in electrophysiology, in line with all the clinical features of Keegan′s disease. With conservation treatment, all patients began to get better 2 to 3 weeks and recovered 11 to 13 weeks after onset. ConclusionShoulder abductor dysfunction without paresthesia is a typical clinical feature of Keegan′s disease.
