scholarly journals The Effect of Ankle Arthrodesis on the Biomechanical Function of the Foot

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0002
Author(s):  
Michal Kozanek ◽  
James Brodsky ◽  
Justin Kane

Category: Ankle, Ankle Arthritis, Basic Sciences/Biologics, Hindfoot Introduction/Purpose: Several studies on the effect on gait of total ankle arthroplasty (TAA) have demonstrated significant functional improvement post-operatively, compared to the patients’ preoperative function. While there are many post-operative studies showing abnormalities of gait in patients who have had ankle arthrodesis, there are very limited published data in ankle fusion which compare post-operative gait to the patients’ own preoperative function. Moreover, there are no published correlation of those gait changes with patient reported outcomes. Methods: Twenty-six consecutive ankle arthrodesis patients were prospectively studied, with pre- and post-operative three- dimensional gait analysis. Kinematic data were collected at 100 Hz with a twelve-camera digital Vicon motion capture system, and two OR6-5 AMTI force plates. Patients walked barefoot at a self-selected speed over a 10-meter walkway. A minimum 20 gait cycles were used for averaging and statistical analysis for temporal-spatial and kinematic parameters and a minimum of five force plate readings for kinetic parameters. Gait parameters were collected for both operated and unaffected limbs (i.e. control). Demographic data were compiled. Prospectively collected patient-reported outcomes included SF-36, VAS, AOFAS scores, which were repeated annually postoperatively. Results: Mean age was 56 (19 – 80) years, BMI 29.7 (18.6 - 45.6), and follow-up 21.9 (12 - 69) months. There were multiple objective parameters of gait which showed statistically significant functional improvements compared to preoperative performance. Temporal-spatial: Improvements were detected in walking speed, step length and cadence; single and double limb support time. Kinematic parameters: Increase in maximum plantarflexion, decrease in maximum dorsiflexion, but total sagittal range of motion was not diminished, and slightly increased (mean 1.8 degrees). The preservation of total sagittal motion after arthrodesis suggested either precise postoperative compensation by the hindfoot, or that most of the preoperative motion was already occurring in the surrounding hindfoot joints. Kinetic parameters: Improvement in ankle moment and hip power were detected. Patient reported outcomes (table) Conclusion: Ankle arthrodesis improves gait in end-stage arthritis, as demonstrated by statistically significant improvements in multiple, objective parameters. Moreover, the increase in sagittal plane motion of the hindfoot, presumed in the literature to be compensatory to the arthrodesis, was shown to be present pre-operatively, as well, suggesting it is also an effect of tibiotalar stiffness due to end-stage arthritis. Improvements in gait corresponded to clinical improvements as well, as demonstrated by improvements in patient reported outcomes in this population. Biomechanical improvements corresponded to clinical outcomes.

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 275.2-276
Author(s):  
N. Fukui ◽  
P. G. Conaghan ◽  
K. Togo ◽  
N. Ebata ◽  
L. Abraham ◽  
...  

Background:Patients with knee osteoarthritis (OA) who do not achieve adequate pain relief and functional improvement with a combination of non-pharmacologic and pharmacologic therapies are recommended an arthroplasty as an effective option to relieve severe pain and functional limitations. However, some patients are reluctant to undergo surgical interventions, and clinicians may choose to avoid or delay surgery due to safety risks and/or the financial cost. It is of interest to understand if the use and perception of surgery differs between countries, however, few published data exist.Objectives:To demonstrate how surgery and the use of surgical procedures differs across Japan, United States of America (US) and 5 major European countries (EU5) and to evaluate patient perception towards surgery.Methods:Data were drawn from the Adelphi OA Disease Specific Programme (2017-18), a point-in-time survey of primary care physicians (PCP), rheumatologists (rheums), orthopaedic surgeons (orthos) and their OA patients. Patients with physician-diagnosed knee OA were included and segmented into two categories: had previous surgery (PS) and never had surgery (NS). A Fisher’s exact test was performed on the two groups. Physicians reported on patient demographics; whether patients had undergone surgery; type of surgery; success of surgery; how success was defined; and reasons for wanting to delay surgery. Patients reported their willingness to undergo surgery; reasons for not wanting surgery; how successful their surgery was; and how they defined this success.Results:Physician/patient reported data were available for 302,230 (Japan), 527,283 (US) and 1487,726 (EU5) patients with diagnosed knee OA. Patients were categorised by their physicians as mild (40% Japan; 34% US; 24% EU5), moderate (49% Japan; 49% US; 56% EU5) or severe (9% Japan; 17% US; 19% EU5). Patients in Japan were more likely to be female (78% vs 54% US; 58% EU5), older (73 vs 65 US; 66 EU5) and have a lower BMI than patients in the US and EU5. Obesity and diabetes were much less prevalent among patients in Japan. One in ten patients in Japan had undergone a surgery (10%), far fewer than in the US (22%) or EU5 (17%). When surgery was performed, this was more likely to be a total joint replacement (TJR) in Japan, whereas in the EU and US, arthroscopic washout was more commonly performed.For over half of Japanese patients (56%), successful surgery was more likely to be defined as having no more pain (vs. 35% US; 14% EU5). Improved mobility and a reduction in pain were also commonly reported reasons. Physicians (in each region) were more likely to suggest pain reduction, rather than no pain, and improved mobility as markers of success. Patients in Japan were much more likely to say they would not agree to surgery if recommended by their doctor, or were unsure (84% vs. 68% US; 62% EU5). The main reason for patient reluctance in Japan was fear of surgery, whereas in the US and EU5 the main reason given was that surgery was not needed. This finding was also evident among physicians in Japan, who frequently reported that patient reluctance was a key reason for delaying surgery. Physicians in Japan, do however, report that patient request was one of their main triggers for recommending surgery (45% vs 20% US; 16% EU5).Conclusion:Although surgery can be an effective option for those with OA who have exhausted other treatment options, some patients are reluctant to undergo surgery out of fear, especially in Japan, possibly due to the higher patient age. Physicians aiming to delay surgery were driven by patient reluctance in Japan, whereas cost to patient was a bigger factor in the US and EU5. The higher level of TJR vs. other surgery options among patients in Japan may suggest physicians are looking for higher levels of efficacy.Disclosure of Interests:Naoshi Fukui Speakers bureau: Pfizer, Consultant of: Pfizer, Philip G Conaghan Speakers bureau: Abbvie, Novartis, Consultant of: AstraZeneca, BMS, Eli Lilly, EMD Serono, Flexion Therapeutics, Galapagos, Gilead, Novartis, Pfizer, Kanae Togo Shareholder of: Pfizer, Employee of: Pfizer, Nozomi Ebata Shareholder of: Pfizer, Employee of: Pfizer, Lucy Abraham Shareholder of: Pfizer, Employee of: Pfizer, James Jackson: None declared, Jessica Jackson: None declared, Mia Berry: None declared, Hemant Pandit Paid instructor for: Bristol Myers Squibb, Consultant of: Johnson and Johnson, Grant/research support from: GSK


2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0001
Author(s):  
Monique Chambers ◽  
MaCalus Hogan ◽  
Dukens LaBaze

Category: Bunion, Midfoot/Forefoot Introduction/Purpose: Hallux rigidus is a degenerative disease of the first metatarsophalangeal joint. Severe, end-stage hallux rigidus can become debilitating with surgical intervention becoming necessary once conservative measures and shoe modifications have failed. Joint salvage procedures include metatarsal phalangeal (MTP) arthrodesis and MTP arthroplasty. The purpose of this study was to assess for differences in patient reported outcomes in two cohorts who underwent fusion or joint reconstruction. Methods: This study was a retrospective review of prospectively collected data of 385 patients from an academic medical institution. Patients who underwent surgical intervention from July 2015 to November 2016 were identified based on CPT codes for MTP arthrodesis (28750) and arthroplasty (28293). We extracted outcome scores including SF12-M, SF12-P, FAAM, and VAS scores. Exclusion criteria included poly-trauma, revision procedures, and lack of pre and post-operative outcome scores. Mann- Whitney t-test was performed using GraphPad Prism version 7.0b for Mac to compare procedure groups, with significance define by a p-value of 0.05. Results: A total of eighteen patients met the inclusion criteria, with 6 who underwent arthroplasty and 12 arthrodesis. The average age was 63.7 amongst the cohort, with a total of 16 female and 2 males. Patients who underwent arthrodesis had better outcomes across all parameters. When comparing preoperative and postoperative scores, arthrodesis patients showed greater improvement of SF12-M (arthrodesis 9 vs arthroplasty -2, p=0.05), and SF12-P (9 vs -16, respectively p=0.05) scores. Arthroplasty patients were more likely to have a decrease in their SF-12 scores. VAS scores and FAAM scores showed no statistical difference between the two cohorts. Postoperative VAS scores were worse in 33% of arthroplasty patients despite surgical intervention, compared to 10% of arthrodesis patients. Conclusion: Our results suggests that both procedures provide a statistically significant difference in pain with several patients having a Global Rate of Change that is “very much better”. However, fusion of the metatarsophalangeal joint results in improved pain and functional outcomes for patients with severe hallux rigidus. These findings are consistent with current reports in the literature, which are mostly case series reports. Larger studies are needed to provide appropriate power and better support the findings of this study.


2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0005
Author(s):  
Thomas L. Lewis ◽  
Robbie Ray ◽  
David Gordon

Category: Bunion Introduction/Purpose: The aim of this study was to explore the 2 year results of third generation (using screw fixation) Minimally Invasive Chevron and Akin osteotomies (MICA) for hallux valgus correction. There is a paucity of published data regarding the outcomes of this relatively new technique. We present the largest series in the literature, using three separate validated patient-reported outcome measures (EQ-5DL, VAS Pain and Manchester Oxford Foot Questionnaire (MOXFQ), for this time point. Methods: A single surgeon case series of patients with hallux valgus underwent primary third generation minimally invasive chevron and akin osteotomies for hallux valgus correction. Between August 2015 and January 2018, 290 MICAs were performed in 203 patients that were eligible for 2 year follow up. Baseline and 2 year post-operative patient reported outcomes were collected for 164 feet in 130 patients (124 females; 6 males). Paired t-tests were used to determine the statistical significance of the difference between pre- and post-operative scores. Results: The mean age was 56.6 (range 29.5-81.0, standard deviation (s.d.) 10.9). At two year follow up, mean MOXFQ scores improved for each domain: Pain; baseline 40.6 (range 0-100, s.d. 22.8), reduced to 11.3 (range 0-75, s.d. 16.0, p<0.001); Walking; 36.0 (range 0-100, s.d. 25.9) reduced to 8.2 (range 0-75.0, s.d. 16.0, p<0.001); Social interaction; 46.7 (range 0-100, s.d. 24.3), reduced to 7.7 (range 0-75.0, s.d. 13.9, p<0.001). Mean VAS Pain score improved from 30.4 (range 0.0-90.0, s.d. 23.6) to 9.4 (range 0.00-70.0, s.d. 15.6, p<0.001). Mean EQ-5D index score improved from 0.750 (range 0.066-1.000, s.d. 0.148) to 0.892 (range 0.410-1.000, s.d. 0.135, p<0.001). Mean EQ-5D VAS score did not significantly improve from 81.9 (range 0-100, s.d. 17.1) to 83.0 (range 0-100, s.d. 18.0, p=0.559). Conclusion: This is the largest prospective case series of short-term patient reported outcomes using a validated assessment method for hallux valgus, following third generation MICA to date. These data show that this technique is effective at improving foot and ankle specific patient reported outcomes at 2 years. This cohort is being followed over the longer term.


2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Kaoru Toguchi ◽  
Arata Nakajima ◽  
Yorikazu Akatsu ◽  
Masato Sonobe ◽  
Manabu Yamada ◽  
...  

Abstract Background Total knee arthroplasty (TKA) is the major surgical treatment for end-stage osteoarthritis (OA). Despite its effectiveness, there are about 20% of patients who are dissatisfied with the outcome. Predicting the surgical outcome preoperatively could be beneficial in order to guide clinical decisions. Methods One-hundred and ten knees of 110 consecutive patients who underwent TKAs for varus knees resulting from OA were included in this study. Preoperative varus deformities were evaluated by femorotibial angle (FTA), medial proximal tibial angle (MPTA) and lateral distal femoral angle (LDFA), and classified as a severe varus (SV) or a mild varus (MV) group. The osteophyte score (OS), which we developed originally, was also calculated based on the size of the osteophytes and classified as groups with more or less osteophytes. We compared preoperative and 1-year postoperative range of motion, the Knee Society Score, and Japanese Knee injury Osteoarthritis Outcome Score (KOOS) between SV and MV groups (varus defined by FTA, MPTA, or LDFA), in each group with more or less osteophytes. Results When varus deformities were defined by FTA, regardless of OS, postoperative KOOS subscales and/or the improvement rates were significantly higher in the SV group than in the MV group. When varus defined by MPTA, regardless of OS, there were no significant differences in postoperative KOOS subscales between groups. However, when varus defined by LDFA, scores for pain, activities of daily living (ADL), and quality of life (QOL) on postoperative KOOS and/or the improvement rates were significantly higher in the SV group than in the MV group only in patients with less osteophytes. No significant differences were found between groups in patients with more osteophytes. Conclusions We classified OA types by radiographic measurements of femur and tibia in combination with OS. Postoperative patient-reported outcomes were better in patients with SV knees but were poor in patients with knees with MV deformity and less osteophytes.


2016 ◽  
Vol 41 (1-3) ◽  
pp. 218-224 ◽  
Author(s):  
Shan Shan Chen ◽  
Saleem Al Mawed ◽  
Mark Unruh

Background: End-stage renal disease (ESRD) patients have poor health-related quality of life (HRQOL) comparing to general population and comparable HRQOL to patients with other major chronic diseases. Poor HRQOL is associated with shorter survival. There is a limited threshold to which dialysis dose and parameters management can improve HRQOL in ESRD patients. Numerous studies have sought to find interventions to improve HRQOL. This article is to review the symptoms associated with poor HRQOL and how frequent the quality of life (QOL) should be evaluated to improve the outcome. Summary: It is required by the Center for Medicare and Medicaid Services to evaluate HRQOL of dialysis patients annually. KDIGO recommends the symptoms to be assessed regularly and the treatment is redirected toward a patient-centered care model. Studies have shown that measuring patient-reported outcomes frequently, from 4 times a day to every 3-6 months, without intervention did not improve the HRQOL significantly. Appropriate intervention of the symptoms may improve the quality of life (QOL). Studies in oncology have also showed a similar result. The commonly used tools to evaluate the HRQOL in dialysis patients take up to 30 min for completion. Therefore, frequent assessment of all the symptoms can provide more burden than benefit to the patients. In addition to the annual HRQOL measurements, more frequent evaluation of targeted symptoms can be helpful. For appropriate intervention of the symptoms, effective communication between providers, as well as a multidisciplinary approach, is essential to improve HRQOL and outcomes in dialysis patients. Key Messages: Measurement of patient-reported outcomes may provide an opportunity to improve outcomes in ESRD. The frequent measurement of symptoms and QOL may be burdensome. Consider targeted measurement of symptoms to complement HRQOL measurement. Improved communication and the use of a multidisciplinary team provide mechanisms to improve HRQOL in ESRD.


2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0025
Author(s):  
Jessica M. Kohring ◽  
Jeffrey R. Houck ◽  
Sam Flemister ◽  
John P. Ketz ◽  
Irvin Oh ◽  
...  

Category: Ankle Arthritis Introduction/Purpose: Much research on outcomes after ankle fusion focuses on gait changes, progression of adjacent joint arthritis, and other clinical measures, but little has been reported on the patient’s perspective. The purpose of this study was to determine the change in physical function and pain after undergoing ankle arthrodesis as determined by patient reported outcomes (PROs). Methods: This was a retrospective review of prospectively collected patient reported outcomes data in 88 consecutive ankle arthrodesis procedures performed from May 2015 to March 2018. Patient reported physical function (PF) and pain interference (PI) were measured as part of the routine care via the PROMIS computerized adaptive test at 6 months and 1 year post- operatively. Descriptive data and Spearman correlations were determined for PF and pain at 6 months and 1 year. Results: The mean pre-operative PF T-score was 37, less than the pre-determined threshold value of 42, indicating that this cohort was impaired physically and would respond positively to surgical intervention. The mean pre-operative PI T-score was 63 indicating moderate to high baseline pain and greater than the threshold value of 60, indicating that this patient cohort would have decreased pain after surgical intervention. The meaningful clinically important difference (MCID) was achieved for PI at 6 months and 1 year post-operatively (T-score of 4 and 6, respectively). At 6 months and 1 year, there was a moderate inverse correlation between PF and PI (r=-0.49, r=-0.61 respectively) suggesting less pain and more function. Demographic data, mean follow-up time, and mean PROMIS T-scores are seen in Table 1. Conclusion: The results of this study indicate that patients can expect to have a clinically meaningful improvement in pain after undergoing ankle fusion. Although patients do improve marginally in physical function, it is most likely the improvement in pain that is the greatest benefit to these patients at one year after ankle arthrodesis. This information is important to share with patients to align patient expectations with surgical results.


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 9025-9025
Author(s):  
E. M. Basch ◽  
A. Iasonos ◽  
A. Barz ◽  
A. Culkin ◽  
M. G. Kris ◽  
...  

9025 Background: In cancer trials, clinicians are required to report patient toxicity symptoms using the NCI's Common Terminology Criteria for Adverse Events (CTCAE). Alternatively, patients could provide this information directly as patient-reported outcomes (PROs). This strategy is advocated by the FDA and is standard in non-oncology trials. But it remains unclear if this approach is feasible over long periods, or in patients with high symptom burdens. Methods: Lung cancer patients starting chemotherapy were selected for this feasibility assessment because they are relatively older, sicker, and less web avid than other cancer populations. A patient adaptation of the CTCAE was uploaded to a web portal for self-reporting, including 15 items common in this population. Over 16-months, participants were encouraged but not required to login and complete an online questionnaire at clinic visits via a touchscreen computer. Optional home access was provided without reminders. Results: Beginning in June 2005, 125 patients were approached and 107 enrolled. Reasons for refusal included “too distressed” and “dislike computers.” Mean enrollment was 42 weeks (1–71), during which 35% of participants died. The average number of clinic visits was 12 (1–40). At each consecutive visit most patients (75–85%) logged in without significant attrition over time, even up to the 40th visit. Reasons for failure to login included “lack of reminder” and “inadequate time.” Prior computer experience was associated with greater adherence (p=0.017), but there was no relationship with sex, age, education, stage, or performance status. Most (90%) found the system useful and would recommend it to others, but only 77% felt it improved communication. Although 76% had access to home computers, only 15% voluntarily self-reported from home. Conclusions: Self-reporting is a feasible long-term strategy for toxicity symptom monitoring in most chemotherapy patients, including those with high symptom burdens. In future evaluations, adherence may be improved with more consistent personal encouragement to login in clinic, electronic reminders for home users, consistent staff response to patients’ symptom reports and alternative data collection methods for those who fail to report electronically. No significant financial relationships to disclose.


2017 ◽  
Vol 35 (5_suppl) ◽  
pp. 216-216
Author(s):  
Noelle L. Williams ◽  
Ayesha Ali ◽  
Tu Dan ◽  
Kyle Ziemer ◽  
Benjamin E. Leiby ◽  
...  

216 Background: The importance of patient-reported outcomes (PROs) has been recognized and this data is increasingly being incorporated into modern radiotherapy (RT) trial design. Despite this, there is a lack of published data regarding collection and reporting of PRO data in the RT setting. We sought to systematically evaluate RT protocols to assess trends of PRO data collection and factors associated with reporting. Methods: We queried multi-institutional RT trials indexed on ClinicalTrials.gov, the Cochrane database, and MEDLINE and identified trials with full protocols available. We collected information in regards to study population, primary and secondary endpoints, quality of life measures, and PRO data. Descriptive and chi-squared analyses were employed to investigate trends and factors associated with PRO reporting. Results: 232 protocols were evaluable (1971-2014) from multiple cooperative groups. Of these, 198 were completed and 34 were in progress. Overall, only 41% of trials had protocol-specified collection of PROs. Of the 155 trials that had at least 1 published report, only 34 (22%) reported PRO data. All nine trials with PRO as a primary endpoint (9/9) had published reports with this information. Treatment era was associated with PRO collection, with 30% of trials collecting PRO data prior to 2005, 48% between 2006 and 2010, and 66% between 2011 and 2015 ( X2 [4, N = 232] = 15.79, p = 0.003). PROs were most likely to be collected in phase III trials ( X2 [4, N = 226] = 59.6, p < 0.0001). Conclusions: PROs are historically under collected and reported in cooperative group RT trials. Despite increasing PRO collection in modern trials, reporting remains suboptimal and may inaccurately inform survivorship issues. As digital literacy progresses, electronic PRO data may offer a potential avenue for improvement. Ultimately, PRO data will serve as a vital component to help define value in newly proposed payment models focused on improving quality of care while reducing cost of care.


2018 ◽  
Vol 39 (7) ◽  
pp. 763-770 ◽  
Author(s):  
Michael R. Anderson ◽  
Jeff R. Houck ◽  
Charles L. Saltzman ◽  
Man Hung ◽  
Florian Nickisch ◽  
...  

Background: A recent publication reported preoperative Patient-Reported Outcomes Measurement Instrumentation System (PROMIS) scores to be highly predictive in identifying patients who would and would not benefit from foot and ankle surgery. Their applicability to other patient populations is unknown. The aim of this study was to assess the validation and generalizability of previously published preoperative PROMIS physical function (PF) and pain interference (PI) threshold t scores as predictors of postoperative clinically meaningful improvement in foot and ankle patients from a geographically unique patient population. Methods: Prospective PROMIS PF and PI scores of consecutive patient visits to a tertiary foot and ankle clinic were obtained between January 2014 and November 2016. Patients undergoing elective foot and ankle surgery were identified and PROMIS values obtained at initial and follow-up visits (average, 7.9 months). Analysis of variance was used to assess differences in PROMIS scores before and after surgery. The distributive method was used to estimate a minimal clinically important difference (MCID). Receiver operating characteristic curve analysis was used to determine thresholds for achieving and failing to achieve MCID. To assess the validity and generalizability of these threshold values, they were compared with previously published threshold values for accuracy using likelihood ratios and pre- and posttest probabilities, and the percentages of patients identified as achieving and failing to achieve MCID were evaluated using χ2 analysis. Results: There were significant improvements in PF ( P < .001) and PI ( P < .001) after surgery. The area under the curve for PF (0.77) was significant ( P < .01), and the thresholds for achieving MCID and not achieving MCID were similar to those in the prior study. A significant proportion of patients (88.9%) identified as not likely to achieve MCID failed to achieve MCID ( P = .03). A significant proportion of patients (84.2%) identified as likely to achieve MCID did achieve MCID ( P < .01). The area under the curve for PROMIS PI was not significant. Conclusions: PROMIS PF threshold scores from published data were successful in classifying patients from a different patient and geographic population who would improve with surgery. If functional improvement is the goal, these thresholds could be used to help identify patients who will benefit from surgery and, most important, those who will not, adding value to foot and ankle health care. Level of evidence: Level II, Prospective Comparative Study


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