Ankle arthrodesis

NewsBot · Nov 25, 2014

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Patient satisfaction and function after bilateral ankle arthrodeses
Philip Vaughan, David Gordon, Andy Goldberg, Nick Cullen, Dishan Singh
Foot and Ankle Surgery; Articles in Press

Highlights
•We report the outcome of a series of bilateral ankle arthrodeses.
•Following bilateral ankle arthrodesis the mean AOFAS score was 79.5 (range 71-90).
•Following bilateral ankle arthrodesis there is a high patient reported satisfaction.
•Following bilateral ankle arthrodesis the benefit lasts into the medium term.
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Background
The optimum way to manage patients with bilateral ankle arthritis (AA) is unclear.

Methods
This review was performed to report the midterm satisfaction and functional outcome of a series of patients who have undergone bilateral staged ankle arthrodesis.

Results
Eight patients, median age 68.5 yrs (range 59-80) were followed-up for a median of 58.5 months (range 24-100). All fusions united in a median time of 12.8 weeks (range 10-19) Their median AOFAS hindfoot score was 79.5 (range 71-90). Six patients (75%) were very satisfied, one was satisfied, and the other neither satisfied nor dissatisfied.Two patients developed symptomatic subtalar arthritis requiring subtalar fusion.

Conclusions
This is the first study to report the outcome of bilateral AA independent to that of unilateral AA. Bilateral AA appears to give patients a good functional result with high patient reported satisfaction into the medium term.
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Admin2 · Nov 25, 2014

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NewsBot · Nov 26, 2014

Improvement in Gait Following Combined Ankle and Subtalar Arthrodesis
Shay Tenenbaum, MD; Scott C. Coleman, MS, MBA; James W. Brodsky, MD
J Bone Joint Surg Am, 2014 Nov 19;96(22):1863-1869.

Background: This study assessed the hypothesis that arthrodesis of both the ankle and the hindfoot joints produces an objective improvement of function as measured by gait analysis of patients with severe ankle and hindfoot arthritis.

Methods: Twenty-one patients with severe ankle and hindfoot arthritis who underwent unilateral tibiotalocalcaneal arthrodesis with an intramedullary nail were prospectively studied with three-dimensional (3D) gait analysis at a minimum of one year postoperatively. The mean age at the time of the operation was fifty-nine years, and the mean duration of follow-up was seventeen months (range, twelve to thirty-one months). Temporospatial measurements included cadence, step length, walking velocity, and total support time. The kinematic parameters were sagittal plane motion of the ankle, knee, and hip. The kinetic parameters were sagittal plane ankle power and moment and hip power. Symmetry of gait was analyzed by comparing the step lengths on the affected and unaffected sides.

Results: There was significant improvement in multiple parameters of postoperative gait as compared with the patients’ own preoperative function. Temporospatial data showed significant increases in cadence (p = 0.03) and walking speed (p = 0.001) and decreased total support time (p = 0.02). Kinematic results showed that sagittal plane ankle motion had decreased, from 13.2° preoperatively to 10.2° postoperatively, in the operatively treated limb (p = 0.02), and increased from 22.2° to 24.1° (p = 0.01) in the contralateral limb. Hip motion on the affected side increased from 39° to 43° (p = 0.007), and knee motion increased from 56° to 60° (p = 0.054). Kinetic results showed significant increases in ankle moment (p < 0.0001) of the operatively treated limb, ankle power of the contralateral limb (p = 0.009), and hip power on the affected side (p = 0.005) postoperatively. There was a significant improvement in gait symmetry (p = 0.01).

Conclusions: There was a small loss of sagittal plane motion in the affected limb postoperatively. There were marked increases in gait velocity, ankle moment, and hip motion and power, documenting objective improvements in ambulatory function. The data showed that preoperative ankle motion was greatly diminished. This may suggest that pain is more important than stiffness in asymmetric gait.
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NewsBot · Nov 27, 2014

Functional and Clinical Assessment of Two Ankle Arthrodesis Techniques
Francesco Malerba, MD, Maria G. Benedetti, MD, Federico G. Usuelli, MD, Rossano Milani, MD, Lisa Berti, MD, Christine Champlon, MEng, Alberto Leardini, DPhil
The Journal of Foot and Ankle Surgery; Articles in Press

Isolated tibiotalar fusion is the preferred choice for isolated end-stage arthritis, joint destruction after infection, talar avascular necrosis, Charcot neuroarthropathy, and joint replacement failure. Combined tibiotalar and subtalar joint fusion with an intramedullary nail can achieve better alignment and save patients from prolonged non-weightbearing. The purpose of the present study was to functionally assess using instrumental gait analysis and clinically assess the effect of these 2 surgical techniques. Twelve patients with a mean follow-up duration of 70 (range 55 to 89) months after successful ankle fusion were analyzed, 6 isolated and 6 combined. The main outcome measure was the functional assessment performed using a stereophotogrammetric system and an established multisegment foot kinematics protocol. Standard clinical, imaging, and score systems were also assessed in the 2 groups, including radiographic-based classification of arthritic degeneration at the neighboring foot joints. No significant differences were found between the 2 groups using the scoring systems. Severe arthritic degeneration was found at the subtalar joint in the isolated fusion group and at the talonavicular and Lisfranc joints in the combined fusion group. From the gait analysis, no differences were found in the time-distance parameters; however, significant differences were observed in several joint rotations and planar angles. Isolated tibiotalar fusion allows for motion, however small, at the subtalar joint but can result in severe degeneration. Good clinical and functional results can also be obtained with combined tibiotalar and subtalar fusion, although this can result in degeneration of the adjacent joints of the foot.
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NewsBot · Jul 10, 2015

Hind- and Midfoot Motion After Ankle Arthrodesis
Laurens W. van der Plaat et al
Foot & Ankle International July 9, 2015

Background: After ankle arthrodesis (AA), compensatory increased range of motion in adjacent joints might lead to increased osteoarthritis. Evaluation of patient-reported outcomes after AA with validated questionnaires is rare. Likewise, reliable radiographic analysis of the position of the AA, expected to influence the range of motion of the hind- and midfoot, is lacking. Therefore, the current study was performed.
Methods: Seventeen patients with unilateral AA were included. Sagittal hind- and midfoot range of motion was measured radiographically. The position of the AA in the sagittal and coronal planes and osteoarthritis of adjacent joints were also evaluated radiographically. Measurements were compared to the contralateral side. Patient-reported outcomes via validated questionnaires were compared to a control group (n = 18).
Results: Average follow-up was 3.5 years. Mean combined hind- and midfoot sagittal range of motion after AA equaled that of the contralateral side (20.8 vs 21.0 degrees; P = .93). The tibiotalar angle after AA equaled that of the contralateral side (107 vs 107 degrees; P = .86). The talus was translated posteriorly after AA (T-T ratio 0.45 vs 0.34; P < .001). Low intraclass correlation coefficients (ICC) precluded reliable evaluation of the coronal position of the hindfoot (ICC, 0.07 and −0.34) and osteoarthritis in adjacent joints (ICC range, 0-0.54). SF-36 physical health scores after AA are lower as compared with those of controls (50 vs 56; P = .01). Scores on the Foot and Ankle Outcome Score and Ankle Osteoarthritis Scale were also significantly lower. Patient satisfaction with AA was high (average visual analog scale score, 83).
Conclusion: No increased sagittal range of motion in the hind- and midfoot after AA was found at 3.5 years of follow-up as compared with the contralateral side. Tibiotalar angles were equal. The talus was translated posteriorly. The hindfoot alignment view was not suitable to analyze the position of the hindfoot. Low ICC of the Kellgren and Lawrence scale precluded evaluation of osteoarthritis of adjacent joints. Patients scored lower than controls on self-reported outcome questionnaires but were satisfied with the result of AA.
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NewsBot · Jul 31, 2015

Effects of Ankle Arthrodesis on Biomechanical Performance of the Entire Foot.
Wang Y, Li Z, Wong DW, Zhang M
PLoS One. 2015 Jul 29;10(7)

BACKGROUND/METHODOLOGY:
Ankle arthrodesis is one popular surgical treatment for ankle arthritis, chronic instability, and degenerative deformity. However, complications such as foot pain, joint arthritis, and bone fracture may cause patients to suffer other problems. Understanding the internal biomechanics of the foot is critical for assessing the effectiveness of ankle arthrodesis and provides a baseline for the surgical plan. This study aimed to understand the biomechanical effects of ankle arthrodesis on the entire foot and ankle using finite element analyses. A three-dimensional finite element model of the foot and ankle, involving 28 bones, 103 ligaments, the plantar fascia, major muscle groups, and encapsulated soft tissue, was developed and validated. The biomechanical performances of a normal foot and a foot with ankle arthrodesis were compared at three gait instants, first-peak, mid-stance, and second-peak.
PRINCIPAL FINDINGS/CONCLUSIONS:
Changes in plantar pressure distribution, joint contact pressure and forces, von Mises stress on bone and foot deformation were predicted. Compared with those in the normal foot, the peak plantar pressure was increased and the center of pressure moved anteriorly in the foot with ankle arthrodesis. The talonavicular joint and joints of the first to third rays in the hind- and mid-foot bore the majority of the loading and sustained substantially increased loading after ankle arthrodesis. An average contact pressure of 2.14 MPa was predicted at the talonavicular joint after surgery and the maximum variation was shown to be 80% in joints of the first ray. The contact force and pressure of the subtalar joint decreased after surgery, indicating that arthritis at this joint was not necessarily a consequence of ankle arthrodesis but rather a progression of pre-existing degenerative changes. Von Mises stress in the second and third metatarsal bones at the second-peak instant increased to 52 MPa and 34 MPa, respectively, after surgery. These variations can provide indications for outcome assessment of ankle arthrodesis surgery.
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NewsBot · Jul 15, 2017

Sports Participation, Functional Outcome, and Complications After Ankle Arthrodesis: Midterm Follow-up.
Kerkhoff YRA et al
Foot Ankle Int. 2017 Jul 1:1071100717717221. doi: 10.1177/1071100717717221

BACKGROUND:
Ankle arthrodesis provides satisfactory functional outcome based on basic daily activities, but information regarding more demanding tasks is limited. Also, studies reporting longer term survival and complication rates are sparse and concern small study populations. This study reports functional outcome with more focus on demanding tasks and sports and reports the mid- to long-term union and complication rates in a large study population.
METHODS:
Between 2005 and 2010, an ankle arthrodesis was performed on 185 ankles. Clinical results were retrospectively assessed with the Foot Function Index (FFI), visual analog scale (VAS) for pain, and the Foot and Ankle Ability Measure (FAAM). Information regarding sports pre- and postoperatively was obtained through a questionnaire. In addition, postoperative complications, reoperations, and failures (defined as nonunion of the ankle arthrodesis) were determined. Mean follow-up time was 8 years.
RESULTS:
FFI scores significantly improved, the FAAM ADL score was 70%, and the mean VAS for pain at the ankle/hindfoot at follow-up was 20. Sports participation slightly diminished from 79.5% prior to the onset of disabling complaints to 68.9% postoperatively. Of the patients, 73.1% were able to hike with a median hiking time of 40 minutes (range, 2-600 minutes). Kneeling could be performed on average 10 minutes (range, 2-60 minutes) in 39.8% and jumping down from steps by 23.5% of the patients. A small selection of patients was able to sprint (14%), and 16.8% of the patients were able to run a median distance of 60 meters (range, 3-1000 meters). Failure occurred in 9.2% and other postoperative complications were present in 21.6%, requiring reoperation in 8.6% of the cases.
CONCLUSION:
Ankle arthrodesis led to satisfactory functional outcome and pain reduction. Most patients remained active in sports, but a transition to less demanding sporting activities was seen. The complication and failure rates were similar with previous literature, and the incidence of nonrevision secondary surgery was relatively low.
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NewsBot · Jun 15, 2021

Obesity and Postoperative Complications Following Ankle Arthrodesis: A Propensity Score Matched Analysis
Pramod N Kamalapathy et al
J Foot Ankle Surg. 2021 May 17;S1067-2516(21)00173-3

Obese patients undergoing orthopedic procedure have been reported to have higher rates of postoperative complications, but the published associations have numerous confounders. This study aims to evaluate the independent effect of obesity on postoperative complications and hospital utilization following ankle arthrodesis. A database review of a Medicare database was performed on patients less than 85 years old who underwent ankle arthrodesis between 2005 and 2014. Patient cohorts were defined using International Classification of Diseases-9 coding for body mass index (BMI)-obese (30-40 kg/m2), and morbidly obese (>40 kg/m2). Normal BMI patients were defined as those without the respect codes for obesity (30-40 kg/m2), morbidly obese (>40 kg/m2), or underweight (<19 kg/m2). All groups were propensity score matched by demographics and comorbidities. Outcomes of interest included 90-day major and minor medical complications, and hospital burden. Morbid obesity was associated with an increased risk of acute kidney injury (4.4% vs 2.4%, OR 1.94, 95% CI 1.37-2.74, p < .001), urinary tract infection (5.2% vs 3.2%, OR 1.66, 95% CI 1.21-2.25, p = .001), readmission (13.6% vs 10.8%, OR 1.33, 95% CI 1.10-1.61, p = .003), and overall minor complications (16.0% vs 11.8%, OR 1.44, 95% CI 1.19-1.74, p < .001) compared to normal BMI patients, and an increased risk for acute kidney injury (4.4% vs 1.9%, OR 2.25, 95% CI 1.32-3.97, p = .003) compared to obese patients. Obesity was not associated with increased medical complications (p > .05). While morbid obesity was associated with an increase in the postoperative complications, obesity was not associated with any increase in postoperative complications following ankle arthrodesis.
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NewsBot · Jul 21, 2021

Sport activity levels following ankle fusion
Maged Hanna et al
Int Orthop. 2021 Jul 6

Purpose: Ankle arthrodesis (AA) is frequently employed in the treatment of end-stage ankle arthritis, which is common following trauma and athletic injuries. While AA remains a popular therapeutic option, little data exists about activity and sporting capacity following AA. The objective of this research was to determine functional outcomes and sporting activity levels in patients following Ankle Arthrodesis.

Methods: Validated questionnaires were emailed to 35 patients with a history of AA at an average follow-up of 52 months. Functional outcomes were assessed using the Foot and Ankle Disability Index (FADI), as well as the associated FADI-Sport. Responses were compared to those from a control population of RESULTS: 24 patients scheduled for AA, at an average pre-operative visit of three months. Activity levels were assessed prior to injury as well as pre- and post-operatively using the Tegner activity level scale. Average Tegner scores of the 35 surgical patients decreased from 3.82 ± 0.38 before their injury, to 1.15 ± 0.19 immediately pre-op, with recovery to 2.67 ± 0.26 following fusion. Average post arthrodesis FADI and FADI-sport scores in our patients were 76.5 ± 3.19% and 33.8 ± 23.06%. For the pre-operative control population, corresponding scores were 47.41 ± 2.61% and 22.24 ± 1.03%. Following AA, we found that patients improved upon their pre-op Tegner score, although they did not return to their pre-injury level of sporting participation. Additionally, patients reported that they had no current dysfunction with their lower leg.

Conclusion: Patients undergoing Ankle Arthrodesis should expect improved lower leg function, though will not likely return to their pre-injury level of activity.
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NewsBot · Oct 8, 2021

Sport activity levels following ankle fusion
Maged Hanna, Emily A. Whicker, Brian Traub, Emad Allam & Sameh A. Labib
International Orthopaedics volume 45, pages2347–2354 (2021)

Purpose
Ankle arthrodesis (AA) is frequently employed in the treatment of end-stage ankle arthritis, which is common following trauma and athletic injuries. While AA remains a popular therapeutic option, little data exists about activity and sporting capacity following AA. The objective of this research was to determine functional outcomes and sporting activity levels in patients following Ankle Arthrodesis.

Methods
Validated questionnaires were emailed to 35 patients with a history of AA at an average follow-up of 52 months. Functional outcomes were assessed using the Foot and Ankle Disability Index (FADI), as well as the associated FADI-Sport. Responses were compared to those from a control population of

Results
24 patients scheduled for AA, at an average pre-operative visit of three months. Activity levels were assessed prior to injury as well as pre- and post-operatively using the Tegner activity level scale. Average Tegner scores of the 35 surgical patients decreased from 3.82 ± 0.38 before their injury, to 1.15 ± 0.19 immediately pre-op, with recovery to 2.67 ± 0.26 following fusion. Average post arthrodesis FADI and FADI-sport scores in our patients were 76.5 ± 3.19% and 33.8 ± 23.06%. For the pre-operative control population, corresponding scores were 47.41 ± 2.61% and 22.24 ± 1.03%. Following AA, we found that patients improved upon their pre-op Tegner score, although they did not return to their pre-injury level of sporting participation. Additionally, patients reported that they had no current dysfunction with their lower leg.

Conclusion
Patients undergoing Ankle Arthrodesis should expect improved lower leg function, though will not likely return to their pre-injury level of activity.
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NewsBot · Oct 23, 2021

Functional outcomes and quality of life in patients with posttraumatic arthrosis undergoing open or arthroscopic talocrural arthrodesis – a retrospective cohort with prospective follow-up
Thirza A. Berk, MD
October 21, 2021

Fusion remains the gold standard for posttraumatic osteoarthritis after ankle fractures in many institutes. Patient-reported outcomes on long-term quality of life and functionality of talocrural arthrodesis remain relatively unknown. In literature, low patient numbers and inadequate outcome measures provide a poor foundation for patient expectation management. Additionally, the surgical approach is often omitted. This study presents a retrospective cohort of patients who underwent open or arthroscopic talocrural arthrodesis for posttraumatic arthritis between 2008 and 2019 with prospective follow-up by questionnaire. Participants completed the EuroQol five-dimensional three-level questionnaire (EQ-5D-3LTM), EuroQol Visual Analogue Scale (EQ-VASTM), Foot and Ankle Outcome Score Dutch Language Version (FAOS-DLV), and four additional questions. Thirty-five patients were included in the cohort and 32 were included for follow-up. Trauma mechanism was mainly a low fall or motor vehicle accident causing a talocrural fracture-dislocation in most cases. For open versus arthroscopic treatment respectively, patients reported a median EQ-5D-3LTM index of 0.775 and 0.775, EQ-VASTM of 80 and 88, FAOS-DLV of 57.0 and 63.9, and satisfaction of 90 and 88 out of 100 after a median of 6.0 and 6.5 years. This study is unique as it is the largest series on patient-reported outcomes in patients with posttraumatic arthrosis with validated questionnaires. In general, patients were satisfied with relatively high questionnaire scores, especially concerning pain and daily living. These functional scores are of importance when setting patient expectations regarding talocrural arthrodesis and recovery. Additionally, the subscale values may help preoperatively in weighing the intervention's advantages and disadvantages for individual patients.
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NewsBot · Sep 5, 2022

Ilizarov Ankle Arthrodesis: A Simple Salvage Solution for Failed and Neglected Ankle Fractures
Ajit Chalak et al
Indian J Orthop. 2022 Jun 23;56(9):1587-1593

Background: Infection around the ankle joint after fracture fixation, or septic arthritis with active discharging sinuses is often challenging to manage with conventional procedures of arthrodesis. The Ilizarov method of arthrodesis gives a better alternative for salvage in such cases.

Methods: This was a retrospective study including 20 patients who were subjected to tibiotalar arthrodesis with Ilizarov method. The major pathologies included internal fixation of ankle fractures complicated by infection, posttraumatic infected ankle arthritis, and osteomyelitis. The patients were evaluated on the basis of Association for the Study and Application of the Method of Ilizarov (ASAMI) criteria. The aim of the surgery was to achieve plantigrade, stable, and painless foot with no signs of infection.

Results: A total of 20 patients were operated and reviewed at our institute. The study comprised of 15 male and 5 female patients with a mean age of 43.9 years (range 33-55 years). Out of 20 patients, 4 patients had complications of pin-tract infection and one had wire breakage of the forefoot ring. According to the ASAMI criteria, 17 patients had excellent bone scores and 18 patients had good functional scores. Union was achieved in all patients with resolution of infection and the mean limb length discrepancy was 1.92 cm (range 1-2.5 cm).

Conclusions: The Ilizarov fixator for ankle arthrodesis provides an excellent way for strong bone fusion, infection eradication, early weight-bearing, and the added benefits of compression at the arthrodesis site post-operatively.
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NewsBot · Aug 8, 2023

Radiographic Measurements of the Foot and Ankle After Ankle Arthrodesis
Jordan Boivin et al
Foot Ankle Orthop. 2023 Jul 24;8(3)

Background: Ankle arthrodesis is an established treatment for ankle arthritis. For patients with ankle arthritis, the position of the talus during ankle arthrodesis may affect the radiographic parameters of the foot. The purpose of this study is to assess the radiographic relationship between talar alignment and the longitudinal arch of the foot before and after ankle arthrodesis.

Methods: We retrospectively reviewed a single-surgeon series of 30 patients who had undergone ankle arthrodesis. Measured parameters included the lateral tibiotalar angle (LTTA), lateral talometatarsal angle (LTMA), lateral talocalcaneal angle (LTCA), cuneiform height (CH), and calcaneal pitch (CP). Additional data collected included demographics, fusion construct type, and visual analog scale (VAS) measurements.

Results: LTTA was increased from 68.2 ± 7.4 degrees preoperatively to 75.0 ± 6.4 degrees postoperatively (P = .001), LTMA increased from -2.0 ± 10.7 degrees to 4.0 ± 10.1 degrees (P < .001), CH increased from 20.1 ± 7.5 mm to 26.1 ± 8.4 mm (P < .001), LTCA and CP had no statistically significant change. VAS score decreased from 5.7 ± 2.7 to 1.3 ± 1.9 (P < .001).

Conclusion: Correcting the talar alignment in the sagittal plane during ankle arthrodesis improved the radiographic parameters of the foot, contributing to restoration of the longitudinal arch. The clinical significance of these findings is that in patients undergoing ankle arthrodesis, the surgeon should be aware that the alignment of the foot will be altered at the time of ankle arthrodesis and should be considered in preoperative planning. Further research is needed to determine the effect of ankle arthrodesis in patients determined to have pes planus preoperatively.
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NewsBot · Nov 9, 2023

Talocrural Arthrodesis Increases Osteoarthritis Severity in Adjacent Joints: A Midterm Computed Tomography Follow-Up Study
Annika Willems et al
Foot Ankle Spec. 2023 Nov 2

Background: After talocrural arthrodesis, adjacent joints (subtalar, talonavicular, and calcaneocuboid) are often affected by osteoarthritis (OA)). It is unclear if OA is pre-existing to talocrural arthrodesis, or whether it develops after talocrural arthrodesis. This retrospective study is unique because it is the first study with preoperative and follow-up computed tomography (CT). The aim of this study is to investigate whether OA develops in adjacent joints after talocrural arthrodesis or if OA is already pre-existing. In addition, associations between degree of OA and patient-reported outcomes are investigated.

Methods: Patients were selected from electronic files, and adjacent joint OA was assessed on preoperative CT and bilateral follow-up CT. Patient-reported outcomes were collected.

Results: Twenty-three patients were included with an average follow-up time of 7 years (SD = 2). In participants without pre-existing OA, OA significantly progressed in all adjacent joints. In participants with pre-existing OA, OA progressed in the subtalar joint. Patient-reported outcomes were not correlated to OA.

Conclusions: Osteoarthritis in the adjacent joints progresses after talocrural arthrodesis, especially in participants without pre-existing OA. The severity of OA is not related to patient-reported outcomes. Therefore, the clinical impact of the progression of OA seems to be limited.
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