The Pellegrini-Stieda Lesion Dissected Historically
Matthijs Paul Somford1, Lorenzo Lorusso2, Alessandro Porro3
1Department of Orthopedic Surgery, Rijnstate, Arnhem, Gelderland, The Netherlands.
The Journal of Knee Surgery
|July 31, 2017
Summary
The Pellegrini-Stieda lesion, a knee calcification, has debated origins. This review highlights the medial collateral ligament (MCL) as the most frequent proposed source, though definitive origin remains unclear.
Area of Science:
- Orthopedics
- Radiology
- Medical History
Background:
- The Pellegrini-Stieda lesion is a common radiographic finding, characterized by calcification on the medial side of the knee.
- Its precise anatomical origin has been a subject of ongoing discussion among researchers and clinicians.
Observation:
- A systematic review of 27 PubMed/MEDLINE articles, supplemented by 10 additional sources, analyzed proposed origins of the Pellegrini-Stieda lesion.
- Proposed origins included the medial collateral ligament (MCL), medial gastrocnemius muscle, adductor magnus, and vastus medialis.
- Magnetic resonance imaging (MRI) and surgical findings were scrutinized for definitive origin identification.
Findings:
- The medial collateral ligament (MCL) was the most frequently cited origin (54% overall, 25% on MRI, 57% during surgery).
- However, a significant percentage of cases remained undecided (50% on MRI) or lacked a specific identified origin (29% during surgery).
- The diverse proposed origins support the eponymous term 'Pellegrini-Stieda lesion,' reflecting historical debate.
Implications:
- The Pellegrini-Stieda lesion's origin remains multifactorial, with the MCL being the most commonly implicated structure.
- Magnetic resonance imaging (MRI) emerges as a valuable noninvasive tool for future research into the lesion's etiology.
- Further investigation is warranted to definitively establish the origin and optimize diagnostic and treatment strategies for this common knee condition.
