A Detailed Examination of Meniscotibial Attachments of the Caudal Canine Medial Meniscus

Introduction: Injuries to the caudal medial meniscus are prevalent in canine stifle disease. Previous studies often describe meniscal attachments in terms of joint capsule connections, yet anatomical details of specific meniscotibial ligamentous structures are lacking. A refined understanding of these structures may guide surgical interventions aimed at preserving stifle stability and enhancing postoperative outcomes in CrCL-deficient dogs.

Materials and Methods: Eleven adult canine cadavers underwent dissection to preserve the caudal joint compartment, followed by digital imaging and formalin fixation. Measurements were taken of two specific meniscocapsular enlargements attaching the caudal meniscus to the tibia. Histopathological analysis was conducted on two decalcified samples with hematoxylin and eosin staining to examine structural characteristics.

Results: Two ligamentous-like attachments were consistently observed in all cadavers. An oblique band extended from the caudal meniscus to the tibia near the medial popliteal notch, with a mean length of 7.45 ± 1.38 mm and width of 6.46 ± 0.79 mm. The second, broadband, originating from the caudal meniscus and extending inferior to attach on the caudal-medial tibia, measured a mean width of 9.8 ± 1.07 mm and length of 2.6 ± 2.6 mm, covering an average of 31.5% of the meniscal circumference. Histological evaluation showed both bands as hypocellular and collagenous structures suggesting distinct mechanical roles.

Discussion/Conclusion: The caudal medial meniscus is anchored by two bands connecting to the tibia, distinct from the caudal meniscotibial ligament. These findings suggest a complex meniscotibial anchoring mechanism that may inform surgical repair strategies in canine meniscal injuries.

Acknowledgment

None.

Publikationsverlauf

Artikel online veröffentlicht:
15. Juli 2025