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Acute Posterior Tibial Tendon Rupture Can Induce a Rapid Development of Progressive Collapsing Foot Deformity: A Case
Alexander Chang1, Avinaash Korrapati, Ian Foran
1Department of Orthopaedic Surgery, University of California San Diego, San Diego, California.
JBJS Case Connector
|October 31, 2025
Summary
Posterior tibial tendon (PTT) rupture can rapidly cause progressive collapsing foot deformity (PCFD) after an injury. Early PTT injury recognition is key to preventing severe foot deformity progression.
Area of Science:
- Orthopedics
- Podiatry
- Foot and Ankle Surgery
Background:
- Progressive collapsing foot deformity (PCFD) is a complex condition affecting foot alignment.
- The posterior tibial tendon (PTT) plays a crucial role in maintaining foot arch support.
- Understanding the etiology and progression of PCFD is vital for effective treatment.
Purpose of the Study:
- To present a case study illustrating the link between PTT rupture and the rapid onset of PCFD.
- To provide chronologic insight into the development of tendon-driven PCFD.
- To emphasize the importance of early PTT injury recognition in PCFD management.
Main Methods:
- A case report detailing a 78-year-old female patient with a history of a fall.
- Utilized pre- and post-injury imaging to assess PTT integrity and foot alignment.
- Documented the progression of foot deformity following a traumatic event.
Main Results:
- Preinjury imaging showed an intact PTT and normal foot alignment.
- Postinjury imaging revealed a PTT rupture.
- The patient developed classic features of PCFD after the injury, indicating rapid deformity progression.
Conclusions:
- PTT rupture can be a direct precipitating factor for the rapid development of PCFD.
- This case highlights the tendon's critical role in preventing foot collapse.
- Early diagnosis and management of PTT injuries are essential to mitigate PCFD progression.
Keywords:
AAFDMRIMeary anglePCFDPTTPTTDX-rayabnormal alignmentadult acquired flatfoot deformityelderlyfemaleflatfootflatfoot deformityfoot alignmentfoot archground-level fallmagnetic resonance imagingnormal alignmentpainplain filmsposterior tibial tendonposterior tibial tendon dysfunctionposterior tibial tendon ruptureposterior tibialis tendonposterior tibialis tendon ruptureprogressive collapsing foot deformityradiographsrapid onsettalar declinationtalonavicular coverageRelated Concept Videos
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