title: Surgical decision making for stage IV adult acquired flatfoot disorder.
abstract: Adult acquired flatfoot deformity is a debilitating musculoskeletal condition affecting the lower extremity. Posterior tibial tendon dysfunction (PTTD) is the primary etiology for the development of a flatfoot deformity in an adult. PTTD is classified into 4 stages (with stage IV subdivided into stage IV-A and IV-B). This classification is described in detail in this article.
authors: Advanced Foot and Ankle Surgical Fellowship, Orthopedic Foot and Ankle Center, 300 Polaris Parkway, Suite 2000, Westerville, OH 43082, USA. Electronic address: ofacresearch@orthofootankle.com.
authors: Kyle S
authors: KS
authors: Peterson
authors: Advanced Foot and Ankle Surgical Fellowship, Orthopedic Foot and Ankle Center, 300 Polaris Parkway, Suite 2000, Westerville, OH 43082, USA.
authors: Christopher F
authors: CF
authors: Hyer
mesh_terms: D000328:Adult; D000843:Ankle Joint / Q000601:surgery; D003657:Decision Making; D005413:Flatfoot / Q000145:classification / Q000000981:diagnostic imaging / Q000601:surgery*; D033023:Foot Joints / Q000601:surgery; D006801:Humans; D008023:Ligaments, Articular / Q000601:surgery; D019637:Orthopedic Procedures; D010808:Physical Examination; D037081:Posterior Tibial Tendon Dysfunction / Q000145:classification / Q000601:surgery; D011859:Radiography
keywords: Adult acquired flatfoot deformity; Ankle valgus; Deltoid ligament insufficiency; Deltoid ligament reconstruction; Posterior tibial tendon dysfunction