Robotic Arm-assisted THA Vs. Conventional THA in Legg-Calvé-Perthes Disease

Zhejiang University

Status: Invitation-only

Conditions: Legg-Calvé-Perthes Disease

Treatments: Procedure: conventional total hip replacement; Procedure: robotic arm-assisted total hip replacement

Study type: Interventional

Funder types: Other

Identifiers

NCT07122323

2025-1100

Details and patient eligibility

About

Flat hip, also called Legg-Calvé-Perthes disease, is clinically characterized by flattened femoral head, shortened femoral neck, and a center of rotation of the femoral head lower than the apex of the greater trochanter. Joint replacement is difficult, with high intraoperative and postoperative complications. Especially, issues such as unequal limb length, postoperative dislocation, postoperative neurological damage, and prosthesis impact have always plagued clinical practice.

The robotic arm-assisted joint replacement technology has been developed and clinically applied for over 10 years, but it was not until the past 3 years that it began to be widely implemented worldwide. Existing research data indicates that robotic arm-assisted joint replacement technology can significantly improve the placement of prostheses and lower limb force lines in patients, and improve their short-term clinical prognosis. However, its application in complex hips, such as flat hip, is limited. More relevant literature is needed to further enrich people's understanding of this technology. In theory, robot assisted technology can solve many challenges faced in flat hip replacement.

Enrollment: 50 estimated patients

Sex: All

Ages: 18 to 80 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• patients with Legg-Calvé-Perthes disease and accept total hip replacement in our center

Exclusion criteria

• infection, cannot complete follow-up

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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50 participants in 2 patient groups

conventional total hip replacement

Active Comparator group

Description:

applying conventional total hip replacement in patients with Legg-Calvé-Perthes disease

Treatment:

Procedure: conventional total hip replacement

robotic arm-assisted total hip replacement

Experimental group

Description:

applying robotic arm-assisted total hip replacement in patients with Legg-Calvé-Perthes disease

Treatment:

Procedure: robotic arm-assisted total hip replacement