Effectiveness of shorter femoral stems for hip replacement surgery, testing the biomechanics, using computer simulations, and comparing clinical outcomes between two types of short stems: one with a collar and one without

Short metaphyseal-fitting femoral stems in primary total hip arthroplasty: biomechanical testing, finite element analysis and randomized-prospective comparative clinical study of a collared and a non-collared short stem

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN12375281

Enrollment

160

Registered

2024-05-15

Start date

2024-01-20

Completion date

Unknown

Last updated

2024-06-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Total hip arthroplasty for hip osteoarthritis Surgery

Interventions

Total hip arthroplasty will be performed in patients with hip osteoarthritis and no hip surgery on the other side or hip dysplasia. The two stems compared will be a short-collared stem and a short ste

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Age 50 - 80 years old 2. Primary hip osteoarthritis 3. Inflammatory hip arthritis 4. Hip avascular necrosis 5. Post-traumatic arthritis

Exclusion criteria

Exclusion criteria: 1. Inability to participate 2. Hip anatomy that inhibits short stem fitting (Dorr C etc) 3. Active or recent infection 4. BMI >45 kg/m² 5. History of hip surgery 6. Commorbidities that would influence the final outcome (e.g. ankylosing spondylitis, neuromuscular diseases)

Design outcomes

Primary

Measure	Time frame
1. Patient-reported outcomes reported preoperatively and at 3, 6, 12 and 24 months using: 1.1. Hip pain and function measured using Forgoten Joint Score 12 (FJS-12) 1.2. Hip pain and function measured using Hip Disability and Osteoarthritis Outcome Score (HOOS) 1.3. Hip pain and function measured using Harris Hip Score (HHS) 1.4. Pain measured using Visual Analogue Scale (VAS) 2. Quality of life measured using Western Ontario and McMaster Universities Arthritis Index (WOMAC) and 12-Item Short Form Health Survey (SF-12) preoperatively and at 3, 6, 12 and 24 months 3. Stem subsidence measured using anteroposterior pelvis x-ray at 1, 3, 6 and 12 months	—

Measure

Time frame

1. Patient-reported outcomes reported preoperatively and at 3, 6, 12 and 24 months using: 1.1. Hip pain and function measured using Forgoten Joint Score 12 (FJS-12) 1.2. Hip pain and function measured using Hip Disability and Osteoarthritis Outcome Score (HOOS) 1.3. Hip pain and function measured using Harris Hip Score (HHS) 1.4. Pain measured using Visual Analogue Scale (VAS) 2. Quality of life measured using Western Ontario and McMaster Universities Arthritis Index (WOMAC) and 12-Item Short Form Health Survey (SF-12) preoperatively and at 3, 6, 12 and 24 months 3. Stem subsidence measured using anteroposterior pelvis x-ray at 1, 3, 6 and 12 months

—

Secondary

Measure	Time frame
1. Gait analysis using VICON 2.4 preoperatively and at 1 and 6 months postoperatively 2. Handgrip strength measured using a Jamar Hydraulic Hand Dynamometer at 3 max repetitions and capturing the best effort preoperatively	—

Countries

Greece

Contacts

Public ContactVasileios Giannatos

vasileiosgiannatos@outlook.com+30 6945608508

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026