degeneration osteoarthritis
Conditions
Interventions
Two surgeons will be placing the NANOS stems. Both surgeons will use the direct
anterior approach (DAA) and the posterolateral approach (PLA). Both surgeons
have extensive experience with both these
Sponsors
Noordwest Ziekenhuisgroep
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: Patient is willing and able to participate in the study protocol Age between 18 and 75 years ASA Physical Status I & II Diagnosed with osteoarthritis of the hip Subjects for who it is decided that they will undergo an uncemented THA at Noordwest Ziekenhuis Groep, location Alkmaar.
Exclusion criteria
Exclusion criteria: Previous surgery to ipsilateral or contralateral hip. Patient has proven osteoporosis Pronounced coxa valga with a femoral neck angle > 145º Pronounced coxa vara with a femoral neck angle 30 Patients understanding of the language is insufficient for understanding the Patient Information and Consent
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Radiographic analysis will be done on standard AP and lateral view X-rays postoperative, 8 weeks, 12 months and 24 months. Only the two X-rays that are taken during the extra outpatient appointment at 24 months do not include the standard treatment for THR. Migration and stem positioning analysis will be done using the EBRA-FCA system and is measured in mm. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary study parameters are the clinical, functional and surgical outcome parameters compared between the DAA and PLA: * Perceived pain, measured using a Visual Analogue Scale (VAS) in the week before surgery, during hospitalization at days 1 to 3, at discharge, 6 weeks, three months, six months, one year after surgery and two years after surgey. * Hip pain and symptoms assessed using the symptoms, pain and activities of daily living (ADL) subscales of the Hip Dysfunction and Osteoarthritis Outcome Score (HOOS) in the week before surgery, at 6 weeks, three months, six months, one year after surgery and two years after surgey. * Hip range of motion in the week before surgery, at 6 weeks, three months, six months, one year after surgery and two years after surgey. * Quality of life assessed using the EQ-5D in the week before surgery, at 6 weeks, three months, six months, one year after surgery and two years after surgey. * Functioning during daily living assessed using the HOOS in the week before surgery, at 6 weeks, three months, six months, one year after surgery and two years after surgey. * Hip abductor strength and gait quality before surgery, at 6 weeks and after 12 months. * Length of hospital stay * Operation time, blood loss, and other parameters of the surgical procedures * All complications related to the surgery and rehabilitation * Health status will be classified using the ASA score. * Patient*s pre-operative status, surgical procedure as well as clinical and radiological outcome will be documented. 8.1.3 Other study parameters Patient characteristics such as age, gender, stature, body weight, body length, side of operation (left or right), smoking and comorbidities. | — |
Countries
Netherlands
Outcome results
None listed