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Surgical management of a double-layered patella: a case report

  • Sascha Goebel
  • Andre F. Steinert
  • Thomas BarthelEmail author
Arthroscopy and Sports Medicine

Abstract

The double-layered patella (DLP) is a rare intra-articular disorder that in most cases is associated with multiple epiphyseal dysplasia (MED). The DLP usually consists of an anterior and a posterior layer with a cartilaginous interface between the two parts. In this article, we present a case of bilateral DLP of a 17-year-old female adolescent with MED, suffering clinical symptoms on her left knee. Upon clinical examination, a painful “snapping” of the patella at 30–40° flexion of the left knee was evident and two osseous layers could be identified in standard radiographs. Arthroscopic examination revealed a transient cranial displacement of the posterior osteochondral layer at 30–40° knee flexion that replaced beyond 40° knee flexion with a visible jump. Surgical management in this case of DLP comprised open debridement of the soft tissue interface and fusion of the two osseous layers using double-threaded screws leading to an excellent outcome at 12 months follow-up.

Keywords

Double-layered patella Surgical management Multiple epiphyseal dysplasia Knee Arthroscopy 

Supplementary material

Video 1 (MPG 9119 kb)

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Sascha Goebel
    • 1
  • Andre F. Steinert
    • 1
  • Thomas Barthel
    • 1
    Email author
  1. 1.Division of Sports Medicine and Arthroscopy, Orthopedic Clinic, König-Ludwig-HausUniversity of WürzburgWürzburgGermany

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