Hip Arthritis
Conditions
Brief summary
The objective of this study is to compare the long-term survival as well as the functional and radiographic results of the rods in the alignment of the varus to the stems in the neutral alignment by comparing 2 groups of implanted Total Hip Arthroplasty. 1 group of stems implanted in varus position. 1 group of stems implanted in neutral position
Detailed description
ABSTRACT: Introduction: Femoral stem positioning in the frontal plane has always been considered a fundamental criterion for implant survival and for functional and radiographic outcomes in total hip arthroplasty (THA). The impact of implanting cementless femoral stems in varus alignment on long-term mechanical complications remains poorly defined in the literature. The aim of our study is to compare long-term survivorship as well as functional and radiographic outcomes of stems in varus alignment to stems in neutral alignment. Patients and Methods: This single center, multi-surgeon, retrospective case-control study will compare a group of 105 THA patients with varus stem alignment (VS) to a control group of 105 THA patients with neutral stem alignment (NS), operated in Brest center between January 2007 and December 2012. The primary outcome measure is implant survival. Secondary outcomes include functional outcomes: HHS, PMA, thigh pain, dislocation and hip ROM; and radiographic outcomes: radiolucency, Agora Roentgenography Assessment (ARA) score, osseointegration, heterotopic ossification, subsidence and stress shielding.
Interventions
PROCEDURETotal Hip Arthroplasty
Patient were operated, a Total hip arthroplasty was performed
Sponsors
University Hospital, Brest
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* PTH rod implanted in varus, * Having X-rays and clinical data in their file * Within a period of less than 6 months * No opposition
Exclusion criteria
* PTH in a context of fracture of the femoral neck * PTH 2nd intention * Lost to sight * Patients who died within 6 months * Refusal to participate
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Survival rate | It was measured in October 2021 | The main outcome measured was the survival of the implant |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| PMA score : | It was measured in October 2021 | Functional outcome : which assesses pain, gait and mobility with a maximum score of 18 |
| Thigh pain | It was measured in October 2021 | Functional outcome : we measured the rate of patients experiencing pain at the level of the thigh |
| Dislocation | It was measured in October 2021 | Functional outcome : hip disclocation rate over the follow up period |
| Hip ROM | It was measured in October 2021 | Functional outcome : Hip range of motion in flexion, adduction, extension, abduction and rotations |
| Radiolucency | It was measured in October 2021 | Radiographic outcome : - Radiolucency according to the Gruen/Callaghan zones |
| HHS | It was measured in October 2021 | Functional outcome : - The Harris Hip Score (HHS) \[26\] which assesses pain, function, deformity and range of motion (ROM) with a maximum score of 100 |
| Osseointegration | It was measured in October 2021 | Radiographic outcome mesured was described in Roentgenographic assessment of the biologic fixation of porous-surfaced femoral components Engh CA, Massin P, Suthers KE |
| Heterotopic ossification | t was measured in October 2021 | Radiographic outcome : - Brooker classification of heterotopic ossification |
| Subsidence | t was measured in October 2021 | Radiographic outcome : - Subsidence: considered significant if more than 5 mm between the immediate postoperative x-ray and the last follow-up x-ray. Subsidence was assessed by measuring the distance between the tip of the trochanter and the shoulder of the stem |
| Stress shielding. | t was measured in October 2021 | Radiographic outcome : we measured the rate of patients with Xray showing stress shielding signs |
| Agora Roentgenography Assessment (ARA) score | It was measured in October 2021 | Radiographic outcome : - Agora Roentgenography Assessment (ARA) score for cementless femoral stem stability according to Epinette |
Countries
France
Outcome results
None listed