The Plantar Plate of the First Metatarsophalangeal Joint

Author:

Lucas Douglas E.123,Philbin Terrence123,Hatic Safet123

Affiliation:

1. Doctor’s Hospital, Columbus, Ohio (DL)

2. Orthopedic Foot and Ankle Center, Westerville, Ohio (TP)

3. Orthopedic Associates of SW Ohio, Inc, Dayton, Ohio (SH)

Abstract

The plantar plate of the first metatarsophalangeal (MP) joint is a critical structure of the forefoot that has been identified as a major stabilizer within the capsuloligamentous complex. Many studies have clarified and documented the anatomy of the lesser toe MP plantar plates, but few have looked closely at the anatomy of the first MP joint. Ten cadaveric specimens were examined to identify and document the objective anatomic relationship of the plantar plate, tibial sesamoid, and surrounding osseus structures. The average distance of the plantar plate distal insertion from the joint line into the proximal phalanx was 0.33 mm. The plantar plate was inserted into the metatarsal head on average 17.29 mm proximal from the joint line. The proximal aspect of the sesamoid was 18.55 mm proximal to the distal attachment of the plantar plate to the phalanx. The distal aspect of the sesamoid averaged 4.69 mm away from the distal attachment into the proximal phalanx. The footprint of the distal plate insertion was on average 6.33 mm in length in the sagittal plane. The authors hope that these objective data measures can aid in the understanding and subsequent surgical repair of this important forefoot structure. Level of Evidence: Level V: Cadaver study

Publisher

SAGE Publications

Subject

Orthopedics and Sports Medicine,Podiatry,Surgery

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