Ankle Osteoarthritis
Conditions
Brief summary
Subtalar fusion is commonly performed in post-traumatic subtalar osteoarthritis, rheumatoid arthritis, posterior tibial tendon dysfunction, tarsal coalition and primary subtalar osteoarthritis. Patients with osteoarthritis or severe dysfunction involving both the ankle and the subtalar joint may benefit from an tibiotalocalcaneal fusion (TTC) or an ankle replacement and subtalar fusion. With the development of new prosthetic designs and of surgical techniques, total ankle replacements (TAR) became a reasonable alternative to fusion with functional and quality of life improvements. A gait analysis of patients that underwent TAR and simultaneous subtalar fusion allows to study with precision and reliability the ankle range of motion (ROM). On the contrary, in healthy subjects or in patients that underwent isolated TAR this is not possible because the ankle ROM is influenced by the ROM of the subtalar joint in such a way that it is not possible to analyze the two joints separately. Also, excluding the role of the subtalar joint, it is possible to accurately analyze and compare the consequences on ankle kinematics of two different prosthetic designs.
Detailed description
Patients who previously have underwent TAR and simultaneous subtalar fusion are retrospectively reviewed. Minimum follow-up after the surgery is 12 months.
Interventions
PROCEDURETAR through anterior approach and subtalar fusion
Simultaneous total ankle replacement through anterior approach and subtalar fusion
PROCEDURETAR through lateral approach and subtalar fusion
Simultaneous total ankle replacement through lateral approach and subtalar fusion
Sponsors
I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio
Study design
Observational model
CASE_CONTROL
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
20 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Patients who underwent ankle prosthesis (Hintegra ankle system, Zimmer Trabecular Metal Total Ankle) and simultaneous fusion of the subtalar joint with at least 12 months of follow-up willing and capable of adhering to postoperative clinical protocols and functional evaluations and who have signed a specific informed consent form approved by the Ethics Committee * Males or females aged between 20 and 80 years old. * Patients with diagnosis of primary not-inflammatory degenerative articular disease
Exclusion criteria
* Patients with Body Mass Index (BMI)\> 35. * Patients with active or suspected latent periprosthetic infection * Patients who underwent revision surgery. * Prosthesis of the hip, knee or ankle, homolateral or contralateral. * Fusion failure of subtalar joint. * Patients with chronic heart failure (NYHA stage\> 2) * Presence of neurological disorders, neuromuscular disorders or other major musculoskeletal pathologies * Cognitive deficits. * Impossibility to match questionnaires due to cognitive disorders or language dysfunctional disorders
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Gait analysis | 1 day | Differences in functional scores obtained by Mini-lab stereophotogrammetry-based Gait Analysis for Lower Limbs |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| VAS (Visual Analog Scale) | 1 day | Differences in Pain Scores on the Visual Analog Scale |
| AOFAS | 1 day | Differences in Functional Scores on the American Orthopaedic Foot and Ankle Society Score |
| Short Form Health Survey (SF-12) | 1 day | Differences in Health Scores on the 12-Item Short Form Health Survey |
Countries
Italy
Outcome results
None listed