Ischiofemoral impingement syndrome masked by proximal hamstring tendinopathy as a cause of gluteal pain in a marathon runner

1Toronto Rehabilitation Institute, University Health Network, Toronto, Canada 2Department of Rehabilitation Medicine, Tan Tock Seng Hospital, Singapore 3Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Toronto Corresponding author: Matthew Rong Jie Tay, MD, Department of Rehabilitation Medicine, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, Singapore 308433. E-mail address: [email protected] The authors have no disclosures with respect to competing interests, funding, grants, equipment, or financial benefits to the authors. This work has not been previously published or presented elsewhere. Matthew Rong Jie Tay is in training.