Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association · 2026
Anatomic and Histologic Analyses of the Popliteal Hiatus Area of the Lateral Meniscus Reveal the Meniscofibular Ligament and the Posteroinferior Popliteomeniscal Fascicle Are Ligamentous Tissue.
СтатьяНазвание и аннотация: Перевод в очереди
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Zhu Heng, Yan Su, Tu Pengcheng, Ma Xiaozhong, Wang Yunchen, Shu Hao, Sun Luning
Аннотация
PURPOSE: To characterize the anatomical structure and histological composition of connective tissue around the popliteal hiatus of the lateral meniscus (LM): the posterosuperior popliteomeniscal fascicle (PS-PMF), posteroinferior popliteomeniscal fascicle (PI-PMF), and anterior popliteomeniscal fascicle (A-PMF), meniscofibular ligament (MFL), and popliteofibular ligament (PFL).
METHODS: Six fresh-frozen cadaveric knees from unpaired donors with intact anatomy, no history of surgical intervention, and no gross pathological alterations were labeled and dissected, including 3 male and female donors, with a mean age of 53 years (range: 39-68 years). The PS-PMF, PI-PMF, A-PMF, MFL, and PFL were examined anatomically, and histological analysis was performed.
RESULTS: The PS-PMF originated from the posterior aspect of the popliteus tendon (PT), crossing its posterior border (n = 5/6) or originating from the superior aspect (n = 1/6), and inserted onto the LM superiorly. The PI-PMF originated from the anterior border of the PT (n = 5/6) or its superior aspect (n = 1/6) and inserted onto the LM inferiorly. Adipose tissue consistently separated the PS-PMF and the PI-PMF. An interfascicular interval between the MFL and PI-PMF was observed (n = 5/6). The MFL originated from the LM, connected superiorly to the A-PMF, and converged inferiorly with the PFL. Histologically, the MFL and PI-PMF exhibited ligamentous characteristic, and the A-PMF and the PS-PMF had a vascular synovial structure.
CONCLUSIONS: The PS-PMF, PI-PMF, A-PMF, MFL, and PFL are distinct anatomical components. The PS-PMF and the PI-PMF form a combined encapsulation around the PT. The MFL and PI-PMF are ligamentous. Given the limited intrinsic healing capacity of MFL injuries, surgical repair combined with trephination of the PT or microfracture is recommended.
CLINICAL RELEVANCE: This study enhances understanding of lesions in the connective tissue around the popliteal hiatus area, supporting more anatomically precise and biologically informed interventions.
METHODS: Six fresh-frozen cadaveric knees from unpaired donors with intact anatomy, no history of surgical intervention, and no gross pathological alterations were labeled and dissected, including 3 male and female donors, with a mean age of 53 years (range: 39-68 years). The PS-PMF, PI-PMF, A-PMF, MFL, and PFL were examined anatomically, and histological analysis was performed.
RESULTS: The PS-PMF originated from the posterior aspect of the popliteus tendon (PT), crossing its posterior border (n = 5/6) or originating from the superior aspect (n = 1/6), and inserted onto the LM superiorly. The PI-PMF originated from the anterior border of the PT (n = 5/6) or its superior aspect (n = 1/6) and inserted onto the LM inferiorly. Adipose tissue consistently separated the PS-PMF and the PI-PMF. An interfascicular interval between the MFL and PI-PMF was observed (n = 5/6). The MFL originated from the LM, connected superiorly to the A-PMF, and converged inferiorly with the PFL. Histologically, the MFL and PI-PMF exhibited ligamentous characteristic, and the A-PMF and the PS-PMF had a vascular synovial structure.
CONCLUSIONS: The PS-PMF, PI-PMF, A-PMF, MFL, and PFL are distinct anatomical components. The PS-PMF and the PI-PMF form a combined encapsulation around the PT. The MFL and PI-PMF are ligamentous. Given the limited intrinsic healing capacity of MFL injuries, surgical repair combined with trephination of the PT or microfracture is recommended.
CLINICAL RELEVANCE: This study enhances understanding of lesions in the connective tissue around the popliteal hiatus area, supporting more anatomically precise and biologically informed interventions.