Evaluation of Non-Surgical and Arthroscopic Treatment for Hip Microinstability

Mean Change from Baseline in Hip Function on the International Hip Outcome Tool (iHOT-12) at 24 Months

Participant-reported hip function. Minimum score 0, maximum score 100 (higher score mean a better outcome).

Time frame: 24 Months

Mean Change from Baseline in Hip Function on the Copenhagen Hip and Groin Outcome Score (HAGOS) at 24 Months

Participant-reported hip function. Minimum score 0, maximum score 100 (higher score mean a better outcome).

Time frame: 24 Months

Mean Change from Baseline in Maximal Isometric Hip Muscle Force in Newton at 24 Months

Maximal hip isometric muscle force will be assessed using a dynamometer (Hoggan MicroFET2, Hoggan, Scientific L.L.C., Salt Lake City, USA) for hip flexion, adduction, abduction, and extension. The maximal developed force in Newton will be recorded. Higher Newton value means a better outcome.

Time frame: 24 Months

Mean Change from Baseline in Hop Performance at 24 Months

Hop performance will be measured with 3 single-leg hops: vertical hop (Muscle lab, Ergotest Technology, Oslo, Norway), hop for distance and a 30-second side-hop test. Each hop test is performed with the patients holding their hands behind their back. For the vertical hop, the time from take-off to landing is converted into hop height in centimeters. In the hop for distance test, the distance between top of the toes at take-off to heel at landing is measured in centimeters. For the 30 second side hop test, one trial per leg is allowed, where the patient is instructed to hop as many times as possible over 2 lines 40 centimeters apart. The number of hops is recorded. Higher height, longer distance and higher number of hops means a better outcome.

Time frame: 24 Months