• Pain and Functional Performance by Oxford Hip Score [ Time Frame: Up to 5 years post-surgery ]
  The Oxford Hip score consist of 12 disease-specific questions measuring patient-reported pain and function of the hip joint. Responses to each question are formatted as a 5-point Likert scale, scored from 0 (the worst outcome/most symptoms) to 4 (the best outcome / least symptoms). The scores for each question are added together for a final result between 0 and 48.
• Implant survivorship by revision rates [ Time Frame: Up to 5 years post-surgery ]
  Cumulative survival rates using a Kaplan-Meier analysis.
• Quality of life by EQ-5D-5L questionnaire [ Time Frame: Up to 5 years post-surgery ]
  This 5-level EQ-5D version (EQ-5D-5L) consists of 2 pages: the EQ-5D descriptive system and the EQ visual analogue scale (EQ VAS). The descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems. A 1-digit number expresses the level selected for that dimension. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state. The health states may be converted into a single index value where 1 represents full health and 0 represents death. The EQ VAS records the patient's self-rated health on a vertical visual analogue scale, where the endpoints are labelled 'The best health you can imagine' and 'The worst health you can imagine'.
• Quality of life by JHEQ [ Time Frame: Up to 5 years post-surgery ]
  The Japanese Orthopaedic Association hip disease evaluation questionnaire (JHEQ) is a self-administered questionnaire that evaluates the quality of life in patients with hip disease. The questionnaire consists of three subscales: pain (28 points), movement (28 points), and mental (28 points), with higher scores indicating a better outcome. This measurement is applicable to Japanese population only.
• Pain and Functional Performance by JOA Hip Score [ Time Frame: Up to 5 years post-surgery ]
  The Japanese Orthopaedic Association (JOA) hip score consists of four subcategories: pain (Pain, 40 points), range of motion (ROM, 20 points), ability to walk (Gait, 20 points), and activities of daily life (ADL, 20 points), with higher scores indicating a better outcome. This measurement is applicable to Japanese population only.
• Adverse events reported [ Time Frame: Up to 5 years post-surgery ]
  Summary of adverse events by category, incidence and frequency

Inclusion Criteria:

• 55 to 80 years of age, inclusive
• Skeletally mature
• Have undergo treatment or in need of primary THA treatment of non-union, femoral neck fracture, unmanageable by other techniques
• Have G7 Dual Mobility system implanted or decision to have a G7 Dual Mobility system implanted was made independently and prior to recruitment into study
• Willing and able to complete scheduled follow-up evaluations as described in the study protocol
• Has participated in the Informed Consent process and is willing and able to sign an IRB/EC approved informed consent

Exclusion Criteria:

• Is septic, has an active infection or has osteomyelitis at the affected joint
• Has significant osteoporosis as defined by treating surgeon
• Has metabolic disorder(s) which may impair bone formation
• Has osteomalacia
• Has distant foci of infections which may spread to the implant site
• Has rapid joint destruction, marked bone loss or bone resorption on pre-operative radiographs
• Has vascular insufficiency, muscular atrophy at the implant site or neuromuscular disease which might jeopardize the outcome of the surgery
• Has any concomitant disease which is likely to jeopardize the functioning or success of the implant
• Is known to be pregnant
• Is a prisoner, known alcohol or drug abuser or mentally incompetent or unable to understand what participation in this study entails
• Has a known sensitively or allergy to one or more of