Please review our privacy policy. Chronic rupture of the posteior tibial tendon. Archived from the original PDF on 21 October Posterior tibial tendon tear combined with a fracture of the accessory navicular: Other less frequent accessory bones include the os sustentaculi, os supranaviculare, os vesalianum, os calcaneus secundarius, os subtibiale and the os subfibulare. This article has been cited by other articles in PMC. Newer imaging techniques have shown that damage to the soft tissues in the region may be significant contributors to lameness and that multiple causes may result in visible lameness.

Support Center Support Center. Thus, the patient was treated by excision of the accessory bone. The accessory navicular synchondrosis. Although such fractures can partly also be diagnosed by means of a navicular series, as already stated, it is not permissible to exclude the presence of a fracture if there are no abnormal findings in the navicular quartet whereas clinical findings are positive. Os naviculare carpi bipartitum bilaterale. We concluded that the MR imaging findings of painful type II accessory navicular bone are a persistent edema pattern in the accessory navicular bone and within the synchondrosis, indicating osteonecrosis, inflammation and destruction of the cartilage cap, with these findings being compatible with chronic stress-related injury.

Accessory bones of the foot: Beitrage Zur Orthopadie und Traumatologie 18 2: Finally, because the patient wanted to participate in sports activities, we decided on surgical treatment.

Since synovitis is considered to be an early clinically observable stage in the development of PTT tear, it navicuulare also possible that the synovitis in the chronic tears had already resolved or had developed into fibrosis 15 At surgery, posterior tibial tendon degeneration was observed. Herein, the author describes a previously unreported accessory bone of foot, which was not encountered even in large series on accessory bones of the feet.


Symptomatic Os Infranaviculare

Acta Radiologica 22 4: Retrieved 11 January Ein Beitrag zur Differentialdiagnose Navicularpseudarthrose-Os naviculare bipartitum carpi. Fourteen of these pathologic specimens also showed frayed cartilage surface, which was observed as altered signal intensity on MR imaging.

The term navicular bone or hand navicular bone was formerly used for the scaphoid bone[1] one of the carpal bones of the wrist. However, it is conceivable for clinically described synovitis not to be manifested on MR imaging. Please review our privacy naviculwre.

This article has been cited by other articles in PMC. Am J Orthop Surg.

Jae Kwang Kim, MD. Foot, abnormalities; Foot, MR; Normal variant. A Axial view and B sagittal view. The MR imaging findings were as follows: It is seen over the medial pole of the navicular bone at between nine and 11 years of age 3. Please review our privacy policy. The tibialis posterior is the only muscle that attaches to the navicular bone. Pathologic analysis revealed severe destruction of the cartilage cap in two of these three patients and it could han be performed in the third patient, because the carilage cap was severely damaged.


Symptomatic Os Infranaviculare

The type I tears represented partial ruptures with a longitudinal split and tendon enlargement, while the naviculaer II tears represented partial rupture with a decrease in the size of the tendon, and the type III tears signified complete disruption. Bones of the human footwith Navicularis labeled at nand left in image. The changes in the signal intensity were compared to those of the adjacent fatty marrow. The white arrow indicates the articular surface between the accessory bone and the intermediate cuneiform.

Tendinosis manifests as a change in tendon size or internal signal. Biomechanics of the accessory navicular synchondrosis.

The main portion of the muscle inserts into the tuberosity of the navicular bone. This page was last edited on 27 Novemberat Even seie type II accessory navicular bones may be symptomatic, plain radiographs may be not helpful in their diagnosis. Bones of the human leg. Contribution to the vascular supply of the os naviculare of the hand.

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