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This retrospective observational study analyses the surgical performance, clinical and radiologic outcome as well as the rate of infections with a main focus on revision surgeries after primary implantation of the Optimys short stem femoral prosthesis.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| retrospective analysis of surgical performance, clinical and radiologic outcome | Other | retrospective analysis of surgical performance, clinical and radiologic outcome |
| Measure | Description | Time Frame |
|---|---|---|
| rate of reoperations | rate of reoperations after primary implantation of the Optimys short stem prosthesis | one year follow-up period after Optimys femoral stem surgery |
| Measure | Description | Time Frame |
|---|---|---|
| rate of cortical hypertrophy | rate of cortical hypertrophy | at one year follow-up after Optimys femoral stem surgery |
| rate of fractures | rate of fractures after the implantation of short stem femoral implants |
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Inclusion Criteria:
Exclusion Criteria:
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Patients treated for a proximal femoral fracture at the University Hospital Basel between 29.10.2013 (date of introduction of the Optimys femoral component at the university hospital Basel) and 29.10.2018.
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| Name | Affiliation | Role |
|---|---|---|
| Martin Clauss, Dr. med | University Hospital, Basel, Switzerland | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Orthopaedics and Trauma Surgery (DOTS). | Basel | 4031 | Switzerland |
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| one year follow-up period after Optimys femoral stem surgery |
| rate of infections | rate of infections after the implantation of short stem femoral implants | one year follow-up period after Optimys femoral stem surgery |
| anatomic alignment on anterior-posterior (ap) view in Degree° | radiologic outcome defined by preciseness of the anatomic alignment compared to the contralateral side | at one year follow-up after Optimys femoral stem surgery |
| subsidence | radiologic outcome defined by rate of subsidence after the implantation of short stem femoral implants (mm) | at one year follow-up after Optimys femoral stem surgery |
| pain at rest (yes/no) | clinical outcome defined by pain at rest (yes/no) | at one year follow-up after Optimys femoral stem surgery |
| pain under stress (yes/no) | clinical outcome defined by pain under stress (yes/no) | at one year follow-up after Optimys femoral stem surgery |
| use of analgetics (yes/no) | clinical outcome defined by use of analgetics (yes/no) | at one year follow-up after Optimys femoral stem surgery |
| use of walking aids | clinical outcome defined by use of walking aids | at one year follow-up after Optimys femoral stem surgery |
| extent of periarticular ossification (PAO) according to Brooker classification system | Brooker classification system divides severity of PAO into 4 types: A: islands of bone within the soft tissues about the hip B: bone spurs originating from the pelvis or proximal end of the femur, leaving at least 1 cm between opposing bone surfaces C: bone spurs originating from the pelvis or proximal end of the femur, reducing the space between opposing bone surfaces to less than 1 cm D: bone ankylosis of the hip | at one year follow-up after Optimys femoral stem surgery |