Pillow Use During Total Hip Arthroplasty

Not Applicable

• Conditions: Hip Replacement, Total; Arthroplasty, Replacement, Hip
• Interventions: Procedure: Pillow

• Registration Number: NCT03825029
• Lead Sponsor: Ottawa Hospital Research Institute

Brief Summary

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.

Detailed 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.

Study Timeline

• Study First Submitted: 2019-01-29
• Study First Submitted QC: 2019-01-29
• Study First Posted: 2019-01-31
• Study Start: 2019-07-22
• Status Verified: 2020-08
• Last Update Submitted: 2020-08-11
• Last Update Posted: 2020-08-12
• Primary Completion: 2021-06
• Study Completion: 2021-09

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 40

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Pillow Group	Pillow	There will be a pillow placed between the patients legs during their operation.

Primary Outcome Measures

Name	Time	Method
Change in radiographic cup inclination angle	Intra-operatively and post-operatively (within one month after the surgery)	The difference between the operative and postoperative radiographic cup inclination angle

Trial Locations

Locations (1)

The Ottawa Hospital; 🇨🇦 Ottawa, Ontario, Canada