[Medium-term results using the cement-free individual femur replacement]

Area of Science:

• Orthopedic surgery
• Biomaterials science

Background:

• The Aldinger-type individual hip prosthesis was implanted in 183 patients between April 1985 and March 1989.
• A significant number of patients (39) had prior surgeries on the same hip.

Purpose of the Study:

• To evaluate the early clinical outcomes and complications of the Aldinger-type individual hip prosthesis.
• To assess patient-reported pain and satisfaction following implantation.

Main Methods:

• Retrospective analysis of 183 Aldinger-type hip prosthesis implantations.
• Follow-up period averaged 37.3 months.
• Data collected on revision surgeries, infection, aseptic loosening, pain, and patient satisfaction.

Main Results:

• 7 hip prostheses (3.8%) were removed due to complications.
• Infection necessitated replacement in 2 cases (1.1%) after 1-1.5 years.
• Aseptic loosening occurred in 5 cases (2.7%).
• 139 patients (76%) were pain-free.
• 159 patients (87%) were satisfied with the surgical outcome.
• One case of femoral shaft fissure was noted, but no fractures.

Conclusions:

• The Aldinger-type individual hip prosthesis shows promising early results.
• Further long-term follow-up is necessary to fully ascertain the prosthesis's durability and efficacy.
• While complications like infection and aseptic loosening occurred, a majority of patients reported positive outcomes regarding pain and satisfaction.