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.
Study Type
OBSERVATIONAL
Enrollment
453
retrospective analysis of surgical performance, clinical and radiologic outcome
Department of Orthopaedics and Trauma Surgery (DOTS).
Basel, Switzerland
rate of reoperations
rate of reoperations after primary implantation of the Optimys short stem prosthesis
Time frame: one year follow-up period after Optimys femoral stem surgery
rate of cortical hypertrophy
rate of cortical hypertrophy
Time frame: at one year follow-up after Optimys femoral stem surgery
rate of fractures
rate of fractures after the implantation of short stem femoral implants
Time frame: one year follow-up period after Optimys femoral stem surgery
rate of infections
rate of infections after the implantation of short stem femoral implants
Time frame: 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
Time frame: 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)
Time frame: at one year follow-up after Optimys femoral stem surgery
pain at rest (yes/no)
clinical outcome defined by pain at rest (yes/no)
Time frame: at one year follow-up after Optimys femoral stem surgery
pain under stress (yes/no)
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clinical outcome defined by pain under stress (yes/no)
Time frame: at one year follow-up after Optimys femoral stem surgery
use of analgetics (yes/no)
clinical outcome defined by use of analgetics (yes/no)
Time frame: at one year follow-up after Optimys femoral stem surgery
use of walking aids
clinical outcome defined by use of walking aids
Time frame: 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
Time frame: at one year follow-up after Optimys femoral stem surgery