Outcomes 8 Years After Minimal Invasive THA

Technische Universität Dresden

Status: Completed

Conditions: Osteoarthritis, Hip

Treatments: Other: surgical approach

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT03657953

THA MIC

Details and patient eligibility

About

There exists only limited scientific evidence concerning medium- to long-term benefits concerning minimally invasive (MI) total hip arthroplasty (THA). The investigators examined in a randomized study design 157 patients 8 years after THA, which were performed via 3 different surgical approaches.

Full description

In contrast to reported short-term advantages of minimally invasive (MI) total hip arthroplasty (THA) there exists only limited scientific evidence concerning medium- to long-term benefits.

The investigators therefore sought to answer the following questions: Is the functional medium-term outcome in THA patients with MI-anterior(MI-A) and MI-anterolateral (MI-AL) approach superior to those treated by direct lateral approach (DLA)? Is the level of life quality increased by MI-THA? Is patient satisfaction higher by MI-THA? Is the revision rate reduced by MI-THA?

Enrollment: 157 patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• clinical and radiologic signs of advanced hip joint Degeneration
• Patients from age 18 to 75

Exclusion criteria

• osteoporosis and
• osteomalacia,
• preceding surgery or radiation therapy in the proximity of the affected hip joint,
• progressive neoplasia,
• preceding or manifest infection of the affected joint and its surrounding soft tissues,
• rheumatoid arthritis,
• hip dysplasia Hartofilakidis type 2 or 3,
• non-compliance,
• chronic neurological or psychiatric diseases,
• ongoing pregnancy

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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157 participants in 3 patient groups

anterior (MI-A) surgical approach

Active Comparator group

Description:

The minimally invasive anterior surgical approach was carried out using a modified Smith-Petersen access as described by Bender et al. (Bender et al. 2009) with the patient in supine position.

Treatment:

Other: surgical approach

anterolateral (MI-AL) surgical approach

Active Comparator group

Description:

For the minimally invasive anterolateral surgical approach, a modified Watson-Jones approach according to Röttinger (Rottinger et al. 2006) was applied with the patient in supine position.

Treatment:

Other: surgical approach

direct lateral (DLA) surgical approach

Active Comparator group

Description:

The direct lateral surgical approach was performed according to the technique described by Hardinge et al. (Hardinge et al. 1982) with the patient positioned supine

Treatment:

Other: surgical approach