Robotic Arm-assisted THA Vs. Conventional THA in Legg-Calvé-Perthes Disease
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: robotic arm-assisted total hip replacement, conventional total hip replacement.
- Who it may be relevant to
- Registry conditions: Legg-Calvé-Perthes Disease. Basic parameters: 18 years — 80 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- China
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Comparison of Robotic Arm-assisted THA and Conventional Manual THA in Patients With Legg-Calvé-Perthes Disease: a Prospective Cohort Study
Overview
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.
Interventions
- Procedure robotic arm-assisted total hip replacement
using robotic total hip replacement in patients with Legg-Calvé-Perthes disease - Procedure conventional total hip replacement
applying conventional total hip replacement in patients with Legg-Calvé-Perthes disease
Primary outcome measures
- inclination angle [Time frame: 2 days after surgery]
- anteversion angle [Time frame: 2 days after surgery]
- Hospital for Special Surgery Score score (HSS score) [Time frame: before the surgery, 1 week after surgery, 1 month after surgery, 6 months after surgery, 1 year after surgery]
Secondary outcome measures (3)
- operation duration [Time frame: during the operation]
- blood loss [Time frame: during the operation]
- Visual Analogue Scale score (VAS score) [Time frame: before the surgery, 1 week after surgery, 1 month after surgery, 6 months after surgery, 1 year after surgery]
Eligibility criteria
Inclusion criteria
- patients with Legg-Calvé-Perthes disease and accept total hip replacement in our center
Exclusion criteria
- infection, cannot complete follow-up
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Non-randomized
- Model
- Parallel assignment
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
China · 1 center
- Second Affiliated Hospital of Zhejiang University School of Medicine — Hangzhou
Identifiers
NCT: NCT07122323 · 2025-1100