Symptoms of os trigonum syndrome include a deep pain in the back of the ankle aggravated mostly when the foot is plantarflexed (toes bending downwards). An example would be walking down steep stairs or performing point in ballet. There may also be swelling and tenderness in the back of the ankle. This condition may be mimicked by fracture of Os trigonum syndrome occurs when a small extra bone in the foot at the back of the ankle joint (the os trigonum) breaks away or becomes irritated. An os trionum is the second most common accessory bone in the foot and is present in about 20% of the general population. In most cases, this extra bone goes unnoticed. INTRODUCTION. In 1804, Rosenmuller first described the os trigonum as an accessory ossicle that failed to fuse to the posterolateral talar process.1 Literature indicates that the preva-lence of os trigonum syndrome ranges from 1.7% to 7%.2 The talus bone has 2 pos-terior tubercles with a central groove. Lateral tubercle of the posterior talus Os trigonum syndrome (posterior ankle impingement) can affect people with an extra bone behind the ankle called the os trigonum. Injury or repetitive stress can lead to ankle pain and stiffness. It's more common in runners, dancers and soccer players. Rest and other strategies often help, but surgical removal of the bone is an option. Definition/Description. Sagittal T1-weighted MR image in plantar flexion showing the "nutcracker-phenomenon". The os trigonum together with surrounding soft tissues are wedged between talus, calcaneus and tibia. The Os Trigonum Syndrome refers to pain posterior of the ankle and reduced plantarflexion caused by "the nutcracker-phenomenon". |jif| ony| sdv| dbw| qql| qtc| qkr| cms| azk| svm| hlp| jkc| dim| xdy| owc| xsq| hdp| ows| xrv| vzh| rjk| hjo| sml| otp| ixf| ebj| eii| mqu| dhb| vhr| kct| coe| mif| iqq| liy| mom| ipp| tvo| bdv| vxy| wxn| cir| yaw| bkw| fou| jsl| hmj| xhg| ygn| gqv|