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NCT Number: NCT03669471

Muscular and Functional Performance in FAIS Patients

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

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Key information

Conditions

Femoroacetabular Impingement Femoracetabular Impingement Joint Diseases Musculoskeletal Diseases Pathologic Processes Pathological Conditions, Signs and Symptoms

Age range

18 year–40 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Testing and exercise-based intervention will be conducted at Hvidovre Hospital

Copenhagen, Denmark

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Testing of performance

Other

The cross-sectional evaluation will involve assessment of:

  • Hip muscle function
  • Single leg jump performance
  • Self-reported hip and groin function
  • Evaluation of return to sport
  • Evaluation of satisfaction regarding usual-care post-operative rehabilitation

The exercise-based treatment will involve criteria-based physiotherapy aiming at improving muscle function around the hip and trunk.

Other names: Exercise-based treatment

Primary outcomes

  1. Peak force

    Time frame: Baseline (week 0)

    Peak isometric hip torque (Nm/kg) of abduction, adduction, extension, and flexion

  2. Rate of force development

    Time frame: Baseline (week 0)

    0-100 ms and 0-200 ms rate of torque development (Nm/s/kg) of abduction, adduction, extension, and flexion

  3. Self-reported hip and groin function (subjects included in prospective study)

    Time frame: 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 outcomes

  1. Single leg jump performance

    Time frame: Baseline (week 0)

    Reactive strength index obtained during a single leg drop jump test

  2. Self-reported hip and groin function

    Time frame: 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)

  3. Return to sport

    Time frame: Baseline (week 0)

    Obtained using a return to sport questionnaire; Scale: Preinjury sport at preinjury level vs. not preinjury sport at preinjury level.

  4. Satisfaction regarding usual-care post-operative rehabilitation

    Time frame: Baseline (week 0)

    Obtained using a questionnaire; Scale: Satisfied with regular post-operative rehabilitation vs. not satisfied with post-operative rehabilitation.

  5. Change in Peak force (subjects included in prospective study)

    Time frame: Baseline (week 0) and follow-up (week 12)

    Peak isometric hip torque (Nm/kg) of abduction, adduction, extension, and flexion

  6. Change in rate of force development (subjects included in prospective study)

    Time frame: 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

  7. Change in Single leg jump performance (subjects included in prospective study)

    Time frame: Baseline (week 0) and follow-up (week 12)

    Reactive strength index obtained during a single leg drop jump test

Sponsors and collaborators

Lead sponsor

Hvidovre University Hospital

Other

Registry information

Official study title

Muscular and Functional Hop Test Performance in Femoroacetabular Impingement Syndrome Patients 6-30 Months Post Hip Arthroscopy - a Cross-sectional Study

Important dates

Study start
2018
Primary completion
2019
Study completion
2019
First posted
Sep 13, 2018
Registry last updated
Dec 17, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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