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This study applied the principles of continuum mechanics to statistical shape modeling (SSM) and determined 3\u2010D metrics for the evaluation of shape deformations in normal growth, LCPD, and SCFE. CT scans were obtained from 32 patients with asymptomatic, LCPD, and SCFE hips ((0.5\u20130.9\u2009mm)<jats:sup>2<\/jats:sup> in\u2010plane resolution, 0.63\u2009mm slice thickness). SSM was performed on segmented proximal femoral surfaces, and shape deformations were described by surface displacement, strain, and growth plate angle metrics. Asymptomatic normal femurs underwent coordinated, growth\u2010associated surface displacements and anisotropic strains that were site\u2010specific and highest at the greater trochanter. After size\u2010 and age\u2010based shape adjustment, LCPD femurs exhibited large displacements and surface strains in the femoral head and neck, with associated changes in femoral head growth plate angles. Mild SCFE femurs had contracted femoral neck surfaces, and surface displacements in all regions tended to increase with severity of slip. The results of this paper provide new 3\u2010D metrics for characterizing the shape and biomechanics of the proximal femur. Statement of Clinical Significance: Quantitative 3\u2010D metrics of shape may be useful for understanding and monitoring disease progression, identifying target regions for shape modulation therapies, and objectively evaluating the success of such therapies. \u00a9 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1526\u20131535, 2018.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jor.23791","type":"journal-article","created":{"date-parts":[[2017,10,31]],"date-time":"2017-10-31T15:47:25Z","timestamp":1509464845000},"page":"1526-1535","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["3\u2010dimensional metrics of proximal femoral shape deformities in Legg\u2013Calv\u00e9\u2013Perthes disease and slipped capital femoral epiphysis"],"prefix":"10.1002","volume":"36","author":[{"given":"Elaine F.","family":"Chan","sequence":"first","affiliation":[{"name":"Department of Bioengineering Center for Musculoskeletal Research University of California\u2014San Diego 9500 Gilman Dr. La Jolla California 92093"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7615-3749","authenticated-orcid":false,"given":"Christine 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92093"},{"name":"Department of Orthopaedic Surgery Center for Musculoskeletal Research University of California\u2014San Diego 9500 Gilman Dr. La Jolla California 92093"},{"name":"Institute of Engineering in Medicine Center for Musculoskeletal Research University of California\u2014San Diego 9500 Gilman Dr. La Jolla California 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