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Suprapatellar plica classification and suprapatellar plica syndrome
Machiko Akao1,2, Tatsunori Ikemoto1,2, Takuya Takata1
1Department of Orthopaedic Surgery, Aichi Medical University, Nagakute, Aichi, 480-1195, Japan.
Summary
Suprapatellar plica syndrome, though rarely reported, can cause knee pain. This study found that patients with this syndrome had complete septum suprapatellar plicae, suggesting a link between plica morphology and knee symptoms.
Area of Science:
- Orthopedic Surgery
- Knee Arthroscopy
- Anatomical Variations
Background:
- Plicae are normal knee structures, but suprapatellar plica syndrome can cause symptoms.
- The pathological contribution of plicae to knee symptoms is rarely reported.
- This study investigates the clinical significance and morphology of suprapatellar plicae in symptomatic knees.
Purpose of the Study:
- To investigate the clinical significance of suprapatellar plicae.
- To analyze the morphological characteristics of suprapatellar plicae in patients undergoing arthroscopic knee surgery.
- To explore the relationship between plica morphology and primary knee diseases.
Main Methods:
- 125 patients undergoing primary arthroscopic knee surgery were included.
- Suprapatellar plicae were classified using the Dandy classification.
- Suprapatellar plica syndrome was diagnosed based on clinical symptoms, MRI, and exclusion of other pathologies.
Main Results:
- Meniscus and ACL injuries were the most common primary diseases (approx. 80%).
- No significant relationship was found between plica morphology and primary disease type (p=0.35).
- Two patients with suprapatellar plica syndrome and complete septum plicae experienced symptom resolution after plica resection.
Conclusions:
- No correlation between plica remnant forms and primary knee disease type was observed.
- All diagnosed suprapatellar plica syndrome cases presented with complete septum suprapatellar plicae.
- Further large-scale studies are needed to confirm these findings.
