Infiltration Technique Descriptions
4
THA Anterior Approach
Injection solution includes bupivacaine liposomal injectable suspension (EXPAREL)
20 mL and 0.25% bupivacaine with epinephrine 30 mL. Normal saline 10-20 mL may
be added if extra volume is needed.
Infiltration Technique
Local
Analgesic
Volume
Step 1: Deep Injection
Before placing the prosthesis, inject 20 mL into the anterior capsule,
superior capsule, medial capsule, posterior capsule, deep antero-lateral
capsule, gluteus minimus and obturator externus.
20 mL
Note: Observe caution during the posterior injection due to the proximity of the
sciatic nerve
Step 2: Anterior Injection
Aer placing the prosthesis, inject 10 mL into the rectus femoris muscle
and sheath and tensor fascia lata.
10 mL
Step 3: Superficial Injection
Aer placing the prosthesis, inject 20 mL into the superficial fascia,
subcutaneous layer and skin.
20 mL