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  • 1
    In: Foot & Ankle International, SAGE Publications
    Abstract: Peritalar subluxation (PTS) is part of progressive collapsing foot deformity (PCFD). This study aimed to evaluate initial deformity correction and PTS optimization in PCFD patients with flexible hindfoot deformity undergoing hindfoot joint-sparing surgical procedures and its relationship with improvements in patient-reported outcome measures (PROMs) at latest follow-up. We hypothesized that significant deformity/PTS correction would be observed postoperatively, positively correlating with improved PROMs. Methods: A prospective comparative study was performed with 26 flexible PCFD patients undergoing hindfoot joint-sparing reconstructive procedures, mean age 47.1 years (range, 18-77). We assessed weightbearing computed tomography (WBCT) overall deformity (foot and ankle offset [FAO]) and PTS markers (distance and coverage maps) at 3 months, as well as PROMs at final follow-up. A multivariate regression model assessed the influence of initial deformity correction and PTS optimization in patient-reported outcomes. Results: Mean follow-up was 19.9 months (6-39), and the average number of procedures performed was 4.8 (2-8). FAO improved from 9.4% (8.4-10.9) to 1.9% (1.1-3.6) postoperatively ( P  〈  .0001). Mean coverage improved by 69.6% ( P = .012), 12.1% ( P = .0343) and 5.2% ( P = .0074) in, respectively, the anterior, middle, and posterior facets, whereas the sinus tarsi coverage decreased by an average 57.1% ( P  〈  .0001) postoperatively. Improvements in patient-reported outcomes were noted for all scores assessed ( P  〈  .03). The multivariate regression analysis demonstrated that improvement in both FAO and PTS measurements significantly influenced the assessed PROMs. Conclusion: This study demonstrated significant improvements in the overall 3D deformity, PTS markers, and PROMs following hindfoot joint-sparing surgical treatment in patients with flexible PCFD. More importantly, initial 3D deformity correction and improvement in subtalar joint coverage and extraarticular impingement have been shown to influence PROMs significantly and positively. Addressing these variables should be considered as goals when treating PCFD. Level of Evidence: Level II, prospective cohort study.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2129503-7
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  • 2
    In: Foot & Ankle International, SAGE Publications, Vol. 42, No. 6 ( 2021-06), p. 768-775
    Abstract: Lateral overload in progressive collapsing foot deformity (PCFD) takes place as hindfoot valgus, peritalar subluxation, and valgus instability of the ankle increase. Fibular strain due to chronic lateral impingement may lead to distraction forces over the distal tibiofibular syndesmosis (DTFS). This study aimed to assess and correlate the severity of the foot and ankle offset (FAO) as a marker of progressive PCFD with the amount of DTFS widening and to compare it to controls. Methods: In this case-control study, 62 symptomatic patients with PCFD and 29 controls who underwent standing weightbearing computed tomography (WBCT) examination were included. Two fellowship-trained blinded orthopedic foot and ankle surgeons performed FAO (%) and DTFS area measurements (mm 2 ). DTFS was assessed semiautomatically on axial-plane WBCT images, 1 cm proximal to the apex of the tibial plafond. Values were compared between patients with PCFD and controls, and Spearman correlation between FAO and DTFS area measurements was assessed. P values of less than .05 were considered significant. Results: Patients with PCFD demonstrated significantly increased FAO and DTFS measurements in comparison to controls. A mean difference of 6.9% ( P 〈 .001) in FAO and 10.4 mm 2 ( P = .026) in DTFS was observed. A significant but weak correlation was identified between the variables, with a Þ of 0.22 ( P = .03). A partition predictive model demonstrated that DTFS area measurements were highest when FAO values were between 7% and 9.3%, with mean (SD) values of 92.7 (22.4) mm 2 . Conclusion: To our knowledge, this was the first study to assess syndesmotic widening in patients with PCFD. We found patients with PCFD to demonstrate increased DTFS area measurements compared to controls, with a mean difference of approximately 10 mm 2 . A significantly weak positive correlation was found between FAO and DTFS area measurements, with the highest syndesmotic widening occurring when FAO values were between 7% and 9.3%. Our study findings suggest that chronic lateral impingement in patients with PCFD can result in a negative biomechanical impact on syndesmotic alignment, with increased DTFS stress and subsequent widening. Level of Evidence: Level III, retrospective comparative study.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2021
    detail.hit.zdb_id: 2129503-7
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 2022
    In:  Foot & Ankle Orthopaedics Vol. 7, No. 3 ( 2022-07), p. 247301142211156-
    In: Foot & Ankle Orthopaedics, SAGE Publications, Vol. 7, No. 3 ( 2022-07), p. 247301142211156-
    Type of Medium: Online Resource
    ISSN: 2473-0114 , 2473-0114
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2874570-X
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  • 4
    Online Resource
    Online Resource
    Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe) ; 2020
    In:  Journal of the Foot & Ankle Vol. 14, No. 2 ( 2020-08-30), p. 211-218
    In: Journal of the Foot & Ankle, Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe), Vol. 14, No. 2 ( 2020-08-30), p. 211-218
    Abstract: In this technical tip, we present the case of an obese 17-year-old female diagnosed with a severe, rigid, and symptomatic flatfoot on a background of exuberant talocalcaneal and residual calcaneonavicular coalition. Through a technical modification of the fusion resection, both coalitions were quickly and safely removed with two single cuts of an oscillating saw, resecting a medial wedge through a medial approach, without the need for “peel-off” tarsal coalition resection. To protect and guide the resection osteotomy, one Freer elevator ws inserted under direct visualization on the patent posterolateral aspect of the subtalar joint posterior facet and a second elevator was positioned underneath the talar neck. Under fluoroscopic guidance, an osteotomy was performed connecting these two points. The patient also received a bone-block subtalar joint arthrodesis and a Cotton osteotomy. Good short-term alignment correction and functional outcome were achieved. Level of Evidence V; Therapeutic Studies; Expert Opinion.
    Type of Medium: Online Resource
    ISSN: 2675-2980
    Language: Unknown
    Publisher: Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe)
    Publication Date: 2020
    detail.hit.zdb_id: 3040308-X
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  • 5
    Online Resource
    Online Resource
    Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe) ; 2021
    In:  Journal of the Foot & Ankle Vol. 15, No. 2 ( 2021-08-31), p. 183-187
    In: Journal of the Foot & Ankle, Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe), Vol. 15, No. 2 ( 2021-08-31), p. 183-187
    Abstract: Peroneal tendon instability is a common injury that occurs in physically active individuals, often as a result of trauma and in the context of an anatomically shallow distal fibular groove. Subluxation of these tendons over the lateral malleolus is accompanied by superior peroneal retinaculum injury. Several techniques have been described in the literature, including fibular groove deepening and retinaculum repair, but few reconstruction techniques are available for cases with insufficient residual retinaculum. We report the case of a 53-year-old man, without a history of trauma, who presented with chronic peroneal instability with a completely obliterated, unsalvageable retinaculum which we treated with a combination of fibular groove deepening and fibular periosteal flap to reconstruct the superior peroneal retinaculum. Level of Evidence V; Case Report; Expert Opinion. 
    Type of Medium: Online Resource
    ISSN: 2675-2980
    Language: Unknown
    Publisher: Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe)
    Publication Date: 2021
    detail.hit.zdb_id: 3040308-X
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  • 6
    Online Resource
    Online Resource
    Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe) ; 2022
    In:  Journal of the Foot & Ankle Vol. 16, No. 3 ( 2022-12-20), p. 215-221
    In: Journal of the Foot & Ankle, Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe), Vol. 16, No. 3 ( 2022-12-20), p. 215-221
    Abstract: Objective: The goal of this paper was to evaluate the validity of foot and ankle offset (FAO) measurements in the setting of severe foot and ankle deformities. Methods: This study included 57 feet (36 patients) that had a history of severe cavovarus deformity. Each participant received a weight-bearing computed tomography (WBCT) scan that was then used to measure FAO. This measurement was performed once using the traditional measurement technique and two additional times using a modified technique that allows for rotational correction of the images to align the talus. Results: Traditional FAO (TFAO) and modified FAO (MFAO) were found to have a significant correlation with one another (r (54)=0.92, p 〈 0.001). There was a high positive correlation between the variables of the two techniques (r=0.92) with the intraobserver reliabilities (ICC=0.95) for FAO measurements. The agreement between TFAO and Modified foot and ankle offset (MFAO) measurements was also considered excellent (ICC=0.99). Conclusion: The MFAO method provides statistically similar FAO measurements compared to the TFAO method in this population. Thus, the TFAO method could potentially expand its patient population to provide surgeons with a reliable tool for assessing more severe deformities. Level of Evidence IV; Retrospective Study.
    Type of Medium: Online Resource
    ISSN: 2675-2980
    Language: Unknown
    Publisher: Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe)
    Publication Date: 2022
    detail.hit.zdb_id: 3040308-X
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  • 7
    Online Resource
    Online Resource
    Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe) ; 2022
    In:  Journal of the Foot & Ankle Vol. 16, No. 3 ( 2022-12-20), p. 288-294
    In: Journal of the Foot & Ankle, Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe), Vol. 16, No. 3 ( 2022-12-20), p. 288-294
    Abstract: A 56-year-old male was admitted to an outpatient clinic five months after feeling a snap in his right heel while walking in the yard. Clinical and imaging evaluation demonstrated a discontinuity of Achilles tendon (AT). The measured gap between the insertion and the proximal stump was 13cm. The patient underwent reconstruction using a bio-absorbable synthetic graft associated with a Flexor Hallucis Longus (FHL) transfer. Good functional outcomes were noted. Achilles tendon reconstruction with the biosynthetic flexible band proved feasible for massive tendon defects by inserting a biological scaffold for native tendon healing, improving postoperative recovery and strength. Level of Evidence V; Therapeutic Studies; Expert Opinion.
    Type of Medium: Online Resource
    ISSN: 2675-2980
    Language: Unknown
    Publisher: Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe)
    Publication Date: 2022
    detail.hit.zdb_id: 3040308-X
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  • 8
    In: Journal of the Foot & Ankle, Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe), Vol. 16, No. 1 ( 2022-04-30), p. 52-58
    Abstract: Objective: To investigate the capability of biointegrative screws to achieve similar radiographical healing outcomes to metallic screws, measured using Hounsfield Unit (HU) algorithms, in medial displacement calcaneus osteotomies (MDCO). Our main hypothesis is that both implant methods would demonstrate comparable results. Methods: In this prospective comparative study, patients undergoing MDCO were allocated to either a biointegrative or a metallic group. Surgeon, primary diagnosis, technique, and displacement were the same for both groups. Patients were assessed using weight-bearing computed tomography preoperatively and at weeks 2, 6, and 12 postoperatively. A 40x40x40 mm cube was centered on the osteotomy site, defining a volume of interest (VOI). Image intensity (Hounsfield Units) profiles along lines perpendicular to the osteotomy line and crossing it were recorded. Graphical plots of the HU distributions were generated for each line and then used to calculate the HU contrast. Results: Three patients were allocated to the metallic group (age: 50.66; BMI: 27.78) and three to the biointegrative group (age: 47.33; BMI: 39.35). At two weeks, mean HU intensity was lower in the metallic group on the center (403.25 vs. 416.28; p=0.312) and superior lines (438.97 vs. 497.92), but not on the inferior line (513.24 vs. 386.57; p 〈 0.001). At six weeks, the mean HU intensity was higher in the biointegrative group on the center line (p 〈 0.001) and the superior line (p=0.018). At 12 weeks, the metallic group presented lower HU values on the center (p 〈 0.001) and inferior (p 〈 0.001) lines, but higher values on the superior line (p=0.010). Contrast was higher in the metallic group patients in the second (p=0.034) and 12th weeks (p=0.049). Conclusion: Bone healing radiographical status results were similar for metallic and bio-integrative screws. Maximum HU values were equivalent, indicating comparable results at the osteotomy sites. However, the biointegrative group had lower contrast, portraying lower variability of bone density over the area. Level of Evidence II; Prospective Comparative Study.
    Type of Medium: Online Resource
    ISSN: 2675-2980
    Language: Unknown
    Publisher: Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe)
    Publication Date: 2022
    detail.hit.zdb_id: 3040308-X
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  • 9
    Online Resource
    Online Resource
    Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe) ; 2020
    In:  Journal of the Foot & Ankle Vol. 14, No. 2 ( 2020-08-30), p. 158-162
    In: Journal of the Foot & Ankle, Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe), Vol. 14, No. 2 ( 2020-08-30), p. 158-162
    Abstract: Objective: To evaluate the profile of foot and ankle injuries in professional soccer. Methods: Data were collected prospectively during the 2016 São Paulo Soccer Championship using two electronic forms: an initial form (10 variables) and a follow-up form (6 variables). The results were standardized and evaluated in SPSS 23.0. Results: A total of 259 injuries were reported: 106 to the thigh (40.9%), 42 to the foot and ankle (16.2%), 39 to the knee (15.1%), 39 to the head or face (15.1%) and 33 in other locations (12.7%). Of the 42 foot and ankle injuries, 20 were lateral ankle sprains (47.6%), 5 were medial ankle sprains (11.9%), 3 were to the triceps surae (7.1%), 3 were leg contusions (7.1%), 3 were foot contusions (7.1%), 2 were myalgias (4.8%), in addition to 5 other types (11.9%). There was physical contact in 73.8% of the injuries (p 〈 0.001), and six injuries (14.3%) were considered severe, i.e., involving a time loss of at least one month. Of the severe injuries, four were treated surgically (three by osteosynthesis and one by tenorrhaphy). The mean time loss due to injury was 19.7 days, and the overall incidence rate was 3.5 injuries per 1000 hours of exposure, with 2.1 ligament injuries per 1000 hours. X-rays and magnetic resonance imaging were the most requested tests in the follow-up of these patients. Conclusion: Foot and ankle injuries were the second most frequent injury in Brazilian professional soccer, 73.8% of which resulted from physical contact (p 〈 0.001). Lateral ankle sprains accounted for 47.6% of these injuries, which reaffirms their high prevalence and importance for sports medicine. Level of Evidence III; Prognostic Studies; Prospective Study.
    Type of Medium: Online Resource
    ISSN: 2675-2980
    Language: Unknown
    Publisher: Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe)
    Publication Date: 2020
    detail.hit.zdb_id: 3040308-X
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  • 10
    In: Journal of the Foot & Ankle, Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe), Vol. 16, No. 3 ( 2022-12-20), p. 237-241
    Abstract: Objective: The objective of the study was to assess the efficacy of the LapiCotton procedure on patients with hallux valgus (HV) combined with medial longitudinal arch collapse. Methods: Preoperative and postoperative weight-bearing computed tomography (WBCT) scans were obtained from patients with HV submitted to the LapiCotton procedure. Semi-automatic measurements were applied to 22 WBCT images across 11 patients enrolled in the study using a software package (Bonelogic, Disior™, Helsinki, Finland). Significance level was set at 0.05. Results: The hallux valgus angle (HVA) was significantly larger (p=0.026) in the preoperative group (Mdn = 27.52) than in the postoperative group (Mdn = 20). In addition, the Meary sagittal measurement was found to be significantly increased (p=0.033) in the preoperative group (Mdn = -14.28) when compared to the postoperative group (Mdn = -11.15). It was also observed that the intermetatarsal angle was significantly larger (p=0.003) in the preoperative group (Mdn = 15.68) compared to the postoperative group (Mdn = 11.26). Conclusion: The LapiCotton procedure effectively corrected radiographic parameters in patients with HV combined with the medial longitudinal arch collapse. Level of Evidence III; Therapeutic Studies; Comparative Retrospective Study.
    Type of Medium: Online Resource
    ISSN: 2675-2980
    Language: Unknown
    Publisher: Associacao Brasileira de Medicina e Cirurgia do Tornozelo e Pe (ABTPe)
    Publication Date: 2022
    detail.hit.zdb_id: 3040308-X
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