Enrollment and data collection insufficient to continue study.

The purpose of this study is to evaluate the use and efficacy of the Encore Linear™ Hip System in a group of 200 patients for whom data has already been collected.

Inclusion Criteria:

• Have hip joint disease related to one or more of the following

  • osteoarthritis
  • rheumatoid arthritis
  • femoral fracture
  • correction of a functional deformity
  • avascular necrosis of the natural femoral head

• Skeletal maturity

• Patient is likely to be available for evaluation for the duration of the study

• Able and willing to sign the informed consent and follow study procedures

• Patient is not pregnant

• No infection present

• No known materials sensitivity

• Patient is over 18 years of age

Exclusion Criteria:

• Skeletal immaturity
• Infection or sepsis
• Insufficient bone quality that may affect the stability of the implant
• Muscular, neurologic or vascular deficiencies which compromise the affected extremity
• Alcoholism or other addictions
• Prisoners
• High levels of physical activity
• Patient is pregnant
• Loss of ligamentous structures
• Materials sensitivity
• Patient is under 18 years of age

Individuals who meet the indications for use of the Linear Hip device AND who meet the inclusion/exclusion criteria