[verified] | Piriform

The piriformis serves a critical function as an external rotator of the hip; it allows the leg to turn outward, a movement essential for balance and agility. Furthermore, it acts as a postural stabilizer when the body is standing. However, the piriformis is best known in medical literature not for its movement, but for its proximity to the sciatic nerve. The sciatic nerve, the largest nerve in the human body, passes directly beneath or, in some anatomical variations, directly through the piriformis muscle. When this muscle becomes tight, inflamed, or spasming, it can compress the sciatic nerve, resulting in a condition known as "piriformis syndrome." This condition mimics the symptoms of a herniated disc, causing radiating pain down the leg, and serves as a prime example of how a structure’s shape can influence its clinical pathology.

: It is highly excitable and often involved in the initiation and spread of seizures. piriform

| Dataset | Source | Label | |---------|--------|-------| | Pelvic CT 100 cases | TCIA (e.g., CT Pelvis) | Piriformis mask | | Hip MRI 50 cases | Private hospital data | Piriformis + aperture | | Augmentation | Rotation, scaling, elastic deform | — | The piriformis serves a critical function as an

| Category | Requirement | |----------|--------------| | Input | 3D volume (NIfTI/DICOM) or 2D image (PNG/JPEG) | | Output | Highlighted region + measurements (depth, width, angle) | | ML model | Segmentation U-Net trained on pelvic/hip CT scans | | Interaction | Click-to-select, toggle visibility, measurement overlay | | Platform | Web (Three.js + TensorFlow.js) or desktop (VTK + PyTorch) | The sciatic nerve, the largest nerve in the

: A phylogenetically ancient three-layered allocortex.