2024年6月25日 · Os subfibulare is an accessory ossicle that lies at the tip of the lateral malleolus of the ankle and is rarely reported 1. Os subfibulare are usually asymptomatic although they may eventually cause painful syndromes or degenerative change in response to overuse and trauma. The ossicle itself may fracture.

2025年1月3日 · Lower Extremity Os are secondary ossification centers that remain separated from the normal bone and may be confused with a fracture. Diagnosis requires plain …

2014年4月10日 · The os subfibulare is usually round, oval, or comma-shaped. The os subfibulare most commonly remains asymptomatic, however, it may cause pain, sustain or simulate a fracture, or it may even precipitate arthrosis in response to overuse and trauma [5].

(a) Anteroposterior foot radiograph, the white arrow is os subfibulare (b) 3D computed tomography (CT) appearance. It might be 5-10 mm in size and is seen quite easily on anteroposterior radiographs of the ankle joint.

2023年11月9日 · Accessory ossicles of the feet are common developmental variants with almost 40 having been described. Some of the more common include 1-4: Knowledge of their presence is helpful so that they are not misdiagnosed as fractures.

2019年7月31日 · The os subfibulare can be found distal to the tip of the lateral malleolus, with round or comma-shaped morphology, and is asymptomatic [25]. The main differential is avulsion fractures of the distal fibula.

It is indicated for symptomatic mechanical lateral ankle instability resulting from an unstable os subfibulare. The technique has the advantages of minimally invasive surgery, evaluation and treatment of concomitant ankle pathology, and preservation of integrity of the anterior talofibular ligament. See video under supplementary data.

This case demonstrates an os subfibulare, an accessory ossicle that lies at the tip of the lateral malleolus of the ankle and is rarely reported. The origin of os subfibulare is subject to two theories 1:

Os subfibulare is an ossicle at the tip of the lateral malleolus. The ossicle is sometimes symptomatic and presents with local pain or lateral ankle instability. The purpose of this Technical Note is to describe the details of arthroscopic stabilization of the os subfibulare.

We suggest that morphologic characteristics of the os subfibulare should be considered when selecting treatment options in patients with CLAI and os subfibulare. Level of evidence: Level III, retrospective comparative series. Keywords: chronic lateral ankle instability; morphologic analysis; os subfibulare; radiologic assessment.