Intra-articular hip injections using ultrasound guidance: accuracy using a linear array transducer.

Objective: To describe the accuracy of sonographically guided intra-articular hip injections with a linear array transducer.

Design: Retrospective review.

Setting: Private outpatient clinic.

Methods: A single experienced operator performed 11 ultrasound-guided intra-articular hip injections by using a linear array transducer. Intra-articular placement was confirmed with contrast agent and fluoroscopy.

Main Outcome Measurements: Assessment of injected contrast within the hip joint via fluoroscopic imaging.

Results: All 11 sonographically guided hip injections were accurately placed within the hip joint by the use of a linear array transducer (100% accuracy).

Conclusion: This retrospective review suggests that physicians who use a linear array transducer can accurately perform intra-articular hip injections in an outpatient setting.