Bulls Eye Sign

Other Names

Intramuscular isolated injuries of the rectus femoris. Axial and coronal/sagittal MR images in fluid-sensitive sequences. a Marginal or paraseptal muscular edema with gap of the muscle fibers (circles). b Edema, fiber distortion, and areas of tear surrounding the central septum (short arrows) without retraction. c Circumferential pattern of fibers rupture encompasses the entire central septum with loss of its tension (large arrows)

Demonstration of the Bulls Eye sign. There is peritendous fluid and edema surrouding the indirect tendon which is moderately retracted.

• Bulls Eye Sign
• Bull's Eye Sign

---

Introduction

• Classic MRI finding seen in rectus femoris muscle tears
• Coined by Hughes et al (need citation)
• Describe the increased signal around the rectus femoris intrasubstance tendon
• Seen in 65% of players
• Represents evolving stages of injury, early edema/hemorrhage, lateral hypervascularity/scarring

---

Pathology

• Rectus Femoris Muscle Injuries

---

Evidence

• Unknown

---

See Also

• Radiology Main
• Hip Pain Main
• Physical Exam Hip
• Hip Anatomy Main

---