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Wallace SB, Hamati M, Lendrum JA, Schultz L, Metzl J, Moon DK, Hunt KJ. Noninvasive Soft Tissue Expansion Strips and Wound Complications After Total Ankle Arthroplasty. Foot Ankle Int 2022; 43:1540-1547. [PMID: 36263464 DOI: 10.1177/10711007221120024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Total ankle arthroplasty through the anterior approach (TAR-AA) is an increasingly popular treatment for ankle arthritis, but it carries a known risk for wound complications. Several products have been investigated to mitigate this risk; however, most are either costly or invasive. Noninvasive skin expansion strips (NSESs) were designed to transfer tension away from the incision and induce new skin growth at the edges of the strips. We hypothesize that postoperative application of NSESs will decrease unplanned clinic visits and wound complications after TAR-AA. METHODS This is a prospective cohort study of 41 patients at a single institution (3 surgeons) treated with NSESs after undergoing TAR-AA. An additional 41 consecutive historical patients treated without NSESs were retrospectively included as a control group. Patients received application of NSESs in the operating room after routine wound closure and again 2 weeks postoperatively. No other changes were made to the surgeons' wound closure technique, immobilization, follow-up timing, or rehabilitation protocols. Primary outcomes included (1) additional clinic visit required for wound assessment or suture removal, (2) superficial wound complication, and (3) deep infection. RESULTS Baseline demographics did not differ significantly from our 41 consecutively treated historical controls. Additional clinic visits for suture removal or wound evaluation were significantly lower for patients treated with NSESs (15%, 6 of 41) compared to the control group (49%, 20 of 41) (P = .001). There was also a significant difference in the superficial wound complication rate in the treatment group vs control group, 2% and 12%, respectively (P = .04). There were no deep infections in either group. CONCLUSION Noninvasive skin expansion strips placed after TAR-AA with an anterior approach have the potential to decrease wound complications and unplanned clinic visits. Further high-volume or randomized studies are needed to clarify their cost effectiveness and effect on long-term outcomes. LEVEL OF EVIDENCE Level II, prospective cohort study.
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Affiliation(s)
- Stephen Blake Wallace
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Mary Hamati
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - James Alexander Lendrum
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Lindsey Schultz
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Joshua Metzl
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Daniel K Moon
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Kenneth J Hunt
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
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Schafer KA, Baldini T, Hamati M, Backus JD, Hunt KJ, McCormick JJ. Two Orthogonal Nitinol Staples and Combined Nitinol Staple-Screw Constructs for a First Metatarsophalangeal Joint Arthrodesis: A Biomechanical Cadaver Study. Foot Ankle Int 2022; 43:1493-1500. [PMID: 36036524 DOI: 10.1177/10711007221119157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND End-stage hallux metatarsophalangeal (MTP) joint arthritis is commonly treated with arthrodesis using stainless steel or titanium implants. These implants provide static compression that is maximal at the time of implant insertion. Alternatively, nitinol staples are capable of dynamic compression. They have most frequently been used for midfoot arthrodesis procedures. However, their biomechanical performance during hallux MTP arthrodesis has not been described. METHODS 8 matched pairs of cadaveric feet (4 female, 4 male) were prepared for hallux MTP arthrodesis using cup and cone reamers. Cadaveric pairs were then instrumented with either (1) a transarticular lag screw and dorsal nitinol staple or (2) orthogonal nitinol staples placed dorsally and medially. Walking in a short leg cast for 6 weeks was simulated by applying 90-N forces at 3 Hz to the plantar proximal phalanx for up to 250 000 cycles. Failure was defined as catastrophic implant failure or plantar gapping beyond 7 mm. RESULTS 15 of 16 specimens failed cyclic loading. All 8 specimens fixed with orthogonal staples failed at an average of 37 ± 81 cycles. 7 of 8 specimens fixed with a dorsal staple and crossed screw failed at 14 900 ± 39 000 cycles. Collectively, 5 specimens failed because of bone fracture (1 in orthogonal staples, 4 in staple-screw group) and 10 failed because of excessive gap formation (7 in orthogonal staples, 3 in staple-screw group). The number of cycles to failure was significantly lower (P = .0469) in the orthogonal staple constructs compared with the dorsal staple and crossed screw constructs. CONCLUSION The tested constructs permit significant motion at the first MTP fusion surface during simulated protected weightbearing. Although multiple in vivo factors should be considered when extrapolating results from this cadaveric study, this motion may result in clinical failure with early postoperative weightbearing protocols. CLINICAL RELEVANCE We report the first biomechanical evaluation of hallux MTP arthrodesis using modern nitinol staples in 2 separate constructs.
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Affiliation(s)
- Kevin A Schafer
- Department of Orthopedic Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Todd Baldini
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Mary Hamati
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Jonathon D Backus
- Department of Orthopedic Surgery, Washington University in St Louis, St Louis, MO, USA
| | - Kenneth J Hunt
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Jeremy J McCormick
- Department of Orthopedic Surgery, Washington University in St Louis, St Louis, MO, USA
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Li S, Zhu M, Gu W, Hamati M, Hunt KJ, de Cesar Netto C, Simonson TS, Myerson MS. Diagnostic Accuracy of the Progressive Collapsing Foot Deformity (PCFD) Classification. Foot Ankle Int 2022; 43:800-809. [PMID: 35301895 DOI: 10.1177/10711007221078000] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND A consensus group recently proposed the term progressive collapsing foot deformity (PCFD) and a new classification with 2 stages plus 5 classes to describe the complex array of flatfoot deformities. This study aimed to validate different diagnostic accuracy rates of the PCFD classification. METHODS This was a survey-based study distributed among 13 foot and ankle fellowship programs for 3 groups of participants with varied experience in practice (group 1: fellows in training, group 2: surgeons in practice for 1-4 years, and group 3: surgeons in practice for ≥5 years). Each participant was asked to assign 20 different cases of flatfoot deformity to the appropriate classes and stages using the PCFD classification. The overall diagnostic accuracy, class, and stage diagnostic accuracy rates for the 20 cases were calculated first for the entire cohort and then compared among the 3 groups. The misdiagnosis rate for each class of deformity (the sum of overdiagnosis and underdiagnosis rates) of the entire cohort was calculated and compared with the other classes. Mean and standard evidence were used to describe numerical data. One-way analysis of variance was used to compare values among the 3 groups and the 5 classes. P <.05 was considered statistically significant. RESULTS For the whole cohort, the overall diagnostic accuracy, class diagnostic accuracy, and stage diagnostic accuracy rates were 71.0%, 78.3%, and 81.7%, respectively There was a statistically significant difference between group 1 and 2, and group 1 and 3, in overall diagnostic accuracy and class diagnostic accuracy, with no significant difference among the 3 groups regarding stage diagnostic accuracy. Class B had a significantly higher overdiagnosis rate than the rest of the classes, whereas class D was significantly underdiagnosed than others. The misdiagnosis rates for classes A to E were 3.3%, 17.5%, 11.1%, 26.0%, and 3.7%, respectively. CONCLUSION The PCFD classification showed overall fair diagnostic accuracy rates. The highest diagnostic accuracy was for "hindfoot valgus deformity" and "ankle instability." Further content validation of the PCFD classification is needed to examine the terminology and interpretation of those classes with low diagnostic accuracy including "midfoot/forefoot abduction deformity," "forefoot varus deformity/medial column instability," and "peritalar subluxation/dislocation."Level of Evidence: Level II, prospective comparative study.
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Affiliation(s)
- Shuyuan Li
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, CO, USA.,Steps2Walk, Inc, Denver, CO, USA
| | - Mingjie Zhu
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, CO, USA
| | - Wanjun Gu
- University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Mary Hamati
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, CO, USA
| | - Kenneth J Hunt
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, CO, USA
| | - Cesar de Cesar Netto
- Department of Orthopaedic and Rehabilitation, University of Iowa, Carver College of Medicine, Iowa City, IA, USA
| | - Tatum S Simonson
- University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Mark S Myerson
- Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, CO, USA.,Steps2Walk, Inc, Denver, CO, USA
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Ouellette L, Hamati M, Flannigan M, Singh M, Bush C, Jones J. Epidemiology of and risk factors for iliopsoas abscess in a large community-based study. Am J Emerg Med 2018; 37:158-159. [PMID: 29784279 DOI: 10.1016/j.ajem.2018.05.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 05/13/2018] [Indexed: 12/11/2022] Open
Affiliation(s)
- Lindsey Ouellette
- Michigan State University College of Human Medicine, Department of Emergency Medicine, 15 Michigan St NE 736, Grand Rapids, MI 49503, United States
| | - Mary Hamati
- Michigan State University College of Human Medicine, Department of Emergency Medicine, 15 Michigan St NE 736, Grand Rapids, MI 49503, United States; Department of Emergency Medicine, Spectrum Health Hospitals, Grand Rapids, 15 Michigan St NE Suite 701, Grand Rapids, MI 49503, United States
| | - Matt Flannigan
- Michigan State University College of Human Medicine, Department of Emergency Medicine, 15 Michigan St NE 736, Grand Rapids, MI 49503, United States; Department of Emergency Medicine, Spectrum Health Hospitals, Grand Rapids, 15 Michigan St NE Suite 701, Grand Rapids, MI 49503, United States
| | - Matt Singh
- Michigan State University College of Human Medicine, Department of Emergency Medicine, 15 Michigan St NE 736, Grand Rapids, MI 49503, United States; Department of Emergency Medicine, Spectrum Health Hospitals, Grand Rapids, 15 Michigan St NE Suite 701, Grand Rapids, MI 49503, United States
| | - Colleen Bush
- Michigan State University College of Human Medicine, Department of Emergency Medicine, 15 Michigan St NE 736, Grand Rapids, MI 49503, United States; Department of Emergency Medicine, Spectrum Health Hospitals, Grand Rapids, 15 Michigan St NE Suite 701, Grand Rapids, MI 49503, United States
| | - Jeffrey Jones
- Michigan State University College of Human Medicine, Department of Emergency Medicine, 15 Michigan St NE 736, Grand Rapids, MI 49503, United States; Department of Emergency Medicine, Spectrum Health Hospitals, Grand Rapids, 15 Michigan St NE Suite 701, Grand Rapids, MI 49503, United States.
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Lagisetty PA, Priyadarshini S, Terrell S, Hamati M, Landgraf J, Chopra V, Heisler M. Culturally Targeted Strategies for Diabetes Prevention in Minority Population. Diabetes Educ 2017; 43:54-77. [PMID: 28118127 PMCID: PMC5408505 DOI: 10.1177/0145721716683811] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Purpose The purpose of this study is to (a) assess the effectiveness of culturally tailored diabetes prevention interventions in minority populations and (b) develop a novel framework to characterize 4 key domains of culturally tailored interventions. Prevention strategies specifically tailored to the culture of ethnic minority patients may help reduce the incidence of diabetes. Methods We searched PubMed, EMBASE, and CINAHL for English-language, randomized controlled trials (RCTs) or quasi-experimental (QE) trials testing culturally tailored interventions to prevent diabetes in minority populations. Two reviewers independently extracted data and assessed risk of bias. Inductive thematic analysis was used to develop a framework with 4 domains (FiLLM: Facilitating [ie, delivering] Interventions Through Language, Location, and Message). The framework was used to assess the overall effectiveness of culturally tailored interventions. Results Thirty-four trials met eligibility criteria. Twelve studies were RCTs, and 22 were QE trials. Twenty-five out of 34 studies (74%) that used cultural tailoring demonstrated significantly improved A1C, fasting glucose, and/or weight loss. Of the 25 successful interventions, 21 (84%) incorporated at least 3 culturally targeted domains. Seven studies used all 4 domains and were all successful. The least utilized domain was delivery (4/34) of the intervention's key educational message. Conclusions Culturally tailoring interventions across the 4 domains of facilitators, language, location, and messaging can be effective in improving risk factors for progression to diabetes among ethnic minority groups. Future studies should evaluate how specific tailoring approaches work compared to usual care as well as comparative effectiveness of each tailoring domain.
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Affiliation(s)
- Pooja A Lagisetty
- Department of General Internal Medicine, University of Michigan, Ann Arbor, Michigan (Dr Lagisetty, Ms Priyadarshini, Ms Terrell, Ms Hamati, Ms Landgraf, Dr Chopra, Dr Heisler)
- VA Center for Clinical Management Research, VA Ann Arbor Healthcare System, Ann Arbor, Michigan (Dr Lagisetty, Dr Heisler)
| | - Shubadra Priyadarshini
- Department of General Internal Medicine, University of Michigan, Ann Arbor, Michigan (Dr Lagisetty, Ms Priyadarshini, Ms Terrell, Ms Hamati, Ms Landgraf, Dr Chopra, Dr Heisler)
| | - Stephanie Terrell
- Department of General Internal Medicine, University of Michigan, Ann Arbor, Michigan (Dr Lagisetty, Ms Priyadarshini, Ms Terrell, Ms Hamati, Ms Landgraf, Dr Chopra, Dr Heisler)
| | - Mary Hamati
- Department of General Internal Medicine, University of Michigan, Ann Arbor, Michigan (Dr Lagisetty, Ms Priyadarshini, Ms Terrell, Ms Hamati, Ms Landgraf, Dr Chopra, Dr Heisler)
| | - Jessica Landgraf
- Department of General Internal Medicine, University of Michigan, Ann Arbor, Michigan (Dr Lagisetty, Ms Priyadarshini, Ms Terrell, Ms Hamati, Ms Landgraf, Dr Chopra, Dr Heisler)
| | - Vineet Chopra
- Department of General Internal Medicine, University of Michigan, Ann Arbor, Michigan (Dr Lagisetty, Ms Priyadarshini, Ms Terrell, Ms Hamati, Ms Landgraf, Dr Chopra, Dr Heisler)
| | - Michele Heisler
- Department of General Internal Medicine, University of Michigan, Ann Arbor, Michigan (Dr Lagisetty, Ms Priyadarshini, Ms Terrell, Ms Hamati, Ms Landgraf, Dr Chopra, Dr Heisler)
- VA Center for Clinical Management Research, VA Ann Arbor Healthcare System, Ann Arbor, Michigan (Dr Lagisetty, Dr Heisler)
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