title: Reply.
authors.affiliation: Departments of Orthopedics & Rehabilitation, Radiology, and Family Medicine, University of Iowa Sports Medicine Center, Iowa City, IA(∗).
authors.forename: Mederic M
authors.initials: MM
authors.lastname: Hall
authors.affiliation: Department of Orthopedics & Rehabilitation, University of Iowa Sports Medicine Center, Iowa City, IA(†).
authors.forename: Sathish
authors.initials: S
authors.lastname: Rajasekaran
authors.affiliation: Department of Orthopedics & Rehabilitation, University of Iowa Sports Medicine Center, Iowa City, IA(‡).
authors.forename: Timothy W
authors.initials: TW
authors.lastname: Thomsen
authors.affiliation: Departments of Pediatrics and Orthopedics & Rehabilitation, University of Iowa Sports Medicine Center, Iowa City, IA(§).
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Peterson