Hip and groin pain is a common injury in athletes participating multidirectional sports, and resulting in decreased sports participation and quality of life. The Copenhagen Hip And Groin Outcome Score (HAGOS) specifically targets young to middle-aged physically active individuals with long-standing hip and/ or groin pain, it consists of six separate subscales about symptoms, pain, physical function in daily living, physical function in sports and recreation, participation in physical activities and hip and/ or groin related quality of life (QoL), which all subscales have shown to have adequate validity, reliability and responsiveness in the original version of the questionnaire. Lacking of the specifical questionnaire for physically active people with hip and/or groin pain, the purpose of the study is to translate and cross-culturally adapt HAGOS into Chinese version (HAGOS-C) according to the guidelines from Beaton et al.

Hip and groin pain is a common injury in athletes participating multidirectional sports, and resulting in decreased sports participation and quality of life. The Copenhagen Hip And Groin Outcome Score (HAGOS) specifically targets young to middle-aged physically active individuals with long-standing hip and/ or groin pain, it consists of six separate subscales about symptoms, pain, physical function in daily living, physical function in sports and recreation, participation in physical activities and hip and/ or groin related quality of life (QoL), which all subscales have shown to have adequate validity, reliability and responsiveness in the original version of the questionnaire. Lacking of the specifical questionnaire for physically active people with hip and/or groin pain, the purpose of the study is to translate and cross-culturally adapt HAGOS into Chinese version (HAGOS-C) according to the guidelines from Beaton et al.

We translated the questionnaire from the English version involved following steps: (1)initial translation with two bilingual translators (2) holding consensus meeting for the preliminary Chinese version (3) back translation with other two bilingual back translators (4) another consensus meeting for ensuring the consistency with original English version (5) pretesting for wording and understanding (6) Wording, rephrasing and format corrected to obtain final Chinese version of the HAGOS.

The aim of the study is to determine the validity, reliability and responsiveness of HAGOS-C by recruiting young to middle-aged physically active individuals with long-standing hip and/ or groin pain.

Inclusion Criteria:

• physically active at least 2.5 hrs/week
• tenderness on iliopsoas, inguinal, hip adductors, pubic symphysis
• hip and/ or groin pain during motion with restriction or giving way sensation, or clicking sound in hip joint.
• pain lasting for 2 to 6 month and no obvious changes within 3 week recently.

Exclusion Criteria:

• other symptoms in lumbar, knee or ankle joint.

The individuals with long-standing hip and/ or groin pain lasting 2 to 6 month, which hip and/ or groin pain during motion with restriction or giving way sensation, or clicking sound in hip joint, and tenderness on iliopsoas, inguinal, hip adductors, pubic symphysis will be included . The individuals with other symptoms in lumbar, knee or ankle joint will be excluded.