Comparison of Two Injection Techniques for Intra-articular Hip Injections

Area of Science:

• Orthopedic Surgery
• Radiology
• Pain Management

Background:

• Intra-articular hip injections traditionally use image guidance for accuracy.
• Musculoskeletal ultrasound (US) is a popular tool for guiding hip injections.
• Automated injection delivery systems may enhance efficiency and reduce procedural risks.

Purpose of the Study:

• To compare patient-reported outcomes and clinical efficiency of US-guided hip injections using an automated system versus traditional syringes.
• To test the hypothesis that automated systems offer superior clinical efficiency.

Main Methods:

• A level 1 randomized prospective study involving 40 patients undergoing hip injections.
• Patients were randomized to receive injections via an automated system or traditional syringe.
• Patient-reported outcomes and preparation times were collected at baseline and 1, 6, and 12 weeks post-injection.

Main Results:

• No significant differences in patient-reported outcomes between the automated and traditional syringe groups at any time point.
• Automated system showed a statistically significant improvement in subjective global assessment at 6 and 12 weeks.
• No difference in patient-reported pain between groups; however, younger age, female sex, and smoking history predicted increased pain.
• Automated system preparation time was significantly longer than traditional syringes (P < .0001).

Conclusions:

• Automated delivery systems for US-guided hip injections do not offer superior efficiency or patient comfort over traditional syringes.
• Intra-articular corticosteroid injections improve pain and function regardless of delivery method.
• Smoking history and female sex are independent predictors of increased injection pain.