Pillow Use During Total Hip Arthroplasty

Ottawa Hospital Research Institute

Status: Unknown

Conditions: Arthroplasty, Replacement, Hip; Hip Replacement, Total

Treatments: Procedure: Pillow

Study type: Interventional

Funder types: Other

Identifiers

NCT03825029

20190058

Details and patient eligibility

About

The purpose of this study is to find out whether placing a pillow between the legs during hip surgery will result in a better aligned hip replacement.

Full description

During hip replacement surgery the cup is placed on specific planned angles. Cup placement has an effect on the patients' pain-free range of movement, dislocation rates and satisfaction. However, the angles of the cup orientation (i.e. the tilt and rotation), which are preoperatively planned and postoperatively measured on radiographs, have a high variability even when an experienced surgeon is performing the surgery. One of the reasons this occurs is because the operated leg can move the pelvis to a different position in the time between set-up and actual implantation which may lead to the cup being placed in a non-optimal position. This study aims to see if the difference between planned and achieved cup angles and pelvic movement can be lessened by putting a pillow in between the legs to keep it in a stable horizontal position.

Enrollment: 40 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patient awaiting primary total hip arthroplasty using a posterior approach in a lateral decubitus position
• Patients capable of reading, understanding, and willing to sign the informed consent form

Exclusion criteria

• Total hip arthroplasty not using a posterior approach in a lateral decubitus position
• Prior hip osteotomy or fracture osteosynthesis on the index hip

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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40 participants in 2 patient groups

Pillow Group

Experimental group

Description:

There will be a pillow placed between the patients legs during their operation.

Treatment:

Procedure: Pillow

Control Group

No Intervention group

Description:

They will receive a normal total hip arthroplasty.