Muscular and Functional Performance in FAIS Patients

Completed

• Conditions: Femoroacetabular Impingement
• Interventions: Other: Testing of performance

• Registration Number: NCT03669471
• Lead Sponsor: Hvidovre University Hospital

Brief Summary

Following hip arthroscopy for femoroacetabular impingement syndrome (FAIS) decreased hip muscle strength for adduction, extension, flexion, and external rotation including impaired functional performance have been observed. However, no studies are lacking on more demanding muscular and functional parameters such as hip muscle rate of force development and reactive strength index. Information on such muscular properties following hip arthroscopy for FAIS may help guide future planning of post-operative rehabilitation strategies.

This is a cross-sectional study with an embedded prospective non-randomized study. The aim of the cross-sectional study is to investigate hip muscle function and functional performance in patients who have undergone hip arthroscopy for FAIS during the preceding 6-30 months.

The aim of the prospective non-randomized study is to investigate the effect of a 12-week structured and supervised physiotherapy-led intervention aiming at improving hip muscular function on self-reported hip and groin function including hip muscle function and functional performance.

Forty-five subjects from the Capital Region with an age of 18-40, who have undergone a hip arthroscopy for FAIS during the last 6-30 months, will be included in the cross-sectional study. Additionally, all included subjects will be offered to take part in the prospective non-randomized study consisting of 12 weeks of supervised and structured physiotherapy-led treatment.

The below measures will be obtained at baseline, and at 12-weeks follow-up if subjects are included in the prospective study. All testing, and supervised physiotherapy-led treatment, will be performed at Hvidovre Hospital:

1. Hip muscle function

2. Single leg jump performance

3. Self-reported hip and groin function

4. Evaluation of return to sport

5. Evaluation of satisfaction regarding usual-care post-operative rehabilitation

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2018-09-07
• Study First Submitted QC: 2018-09-11
• Study Start: 2018-09-13
• Study First Posted: 2018-09-13
• Primary Completion: 2019-09-10
• Status Verified: 2019-12
• Study Completion: 2019-12-15
• Last Update Submitted: 2019-12-15
• Last Update Posted: 2019-12-17

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 45

Inclusion Criteria

• Male/female at the age of 18-40 years at the time of surgery
• Undergone hip arthroscopy for FAIS during the previous 6-30 months (surgical procedure: cam resection and labral surgery)
• Pre-operative cam morphology specified as an alpha angle ≥55°

Exclusion Criteria

• Pre-surgery joint space width <3 mm
• Any of the following surgical procedures at any time: extra articular surgery of the hip joint (except capsular closure), microfracture, periacetabular osteotomy, and surgery of the ligamentum teres; previous hip arthroscopy in the same hip joint; previous hip pathology such as Perthes' disease, slipped upper femoral epiphysis, hip dysplasia (Lateral Center Edge Angle <25°), and/or avascular necrosis; Any rheumatoid disease in the hip joint such as synovial chondromatosis.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
FAIS group	Testing of performance	Subjects who have had a hip arthroscopy for femoroacetabular impingement during the preceding 6-30 months

Primary Outcome Measures

Name	Time	Method
Peak force	Baseline (week 0)	Peak isometric hip torque (Nm/kg) of abduction, adduction, extension, and flexion
Rate of force development	Baseline (week 0)	0-100 ms and 0-200 ms rate of torque development (Nm/s/kg) of abduction, adduction, extension, and flexion
Self-reported hip and groin function (subjects included in prospective study)	Baseline (week 0) and follow-up (week 12)	Obtained using the Copenhagen Hip and Groin Outcome Score (HAGOS); Scale from 0 (extreme hip and groin problems) to 100 (no hip and groin problems)

Secondary Outcome Measures

Name	Time	Method
Single leg jump performance	Baseline (week 0)	Reactive strength index obtained during a single leg drop jump test
Self-reported hip and groin function	Baseline (week 0)	Obtained using the Copenhagen Hip and Groin Outcome Score (HAGOS); Scale from 0 (extreme hip and groin problems) to 100 (no hip and groin problems)
Return to sport	Baseline (week 0)	Obtained using a return to sport questionnaire; Scale: Preinjury sport at preinjury level vs. not preinjury sport at preinjury level.
Satisfaction regarding usual-care post-operative rehabilitation	Baseline (week 0)	Obtained using a questionnaire; Scale: Satisfied with regular post-operative rehabilitation vs. not satisfied with post-operative rehabilitation.
Change in Peak force (subjects included in prospective study)	Baseline (week 0) and follow-up (week 12)	Peak isometric hip torque (Nm/kg) of abduction, adduction, extension, and flexion
Change in rate of force development (subjects included in prospective study)	Baseline (week 0) and follow-up (week 12)	0-100 ms and 0-200 ms rate of torque development (Nm/s/kg) of abduction, adduction, extension, and flexion
Change in Single leg jump performance (subjects included in prospective study)	Baseline (week 0) and follow-up (week 12)	Reactive strength index obtained during a single leg drop jump test

Trial Locations

Locations (1)

Testing and exercise-based intervention will be conducted at Hvidovre Hospital; 🇩🇰 Copenhagen, Denmark