Compare the surgical use of Topaz with the Standard Of Care in the treatment of Greater Trochanteric Pain Syndrome (a type of hip pain). The hypothesis is that there is a difference between the two treatment groups.

Inclusion Criteria:

1. Female or male aged between 40-70 years old, females and males are eligible
2. A history of > 6 months of conservative care treatment for lateral hip pain, including but not limited to local anaesthetic and steroid injections into the trochanteric bursa
3. Pre-operative MRI and ultrasound with evidence of GTPS within the previous 24 weeks
4. Willing to comply with the protocol and follow-up visits
5. Signed the Independent Ethics Committee (IEC) approved Informed Consent Form

Exclusion Criteria:

1. Previous surgery to the hip such as hip replacement, fracture neck of femur fixation, or repair of gluteal tendons
2. Subjects with sero-positive or sero-negative arthropathy
3. Long term steroid use > 6 weeks
4. Allergy to drugs to be used in the procedure
5. Medical co-morbidities that preclude surgical intervention
6. Inability to understand or respond to the study questionnaires
7. Females who are pregnant, or pregnancy is suspected or planned within the clinical investigation timeframe
8. Subjects who are simultaneously participating in another device or pharmaceutical investigation

Intra-operative Exclusion:

1. Abductor tears
2. Severe tendinopathy