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Aparisi Gómez MP, Aparisi F, Guglielmi G, Bazzocchi A. Particularities on Anatomy and Normal Postsurgical Appearances of the Ankle and Foot. Radiol Clin North Am 2023; 61:281-305. [PMID: 36739146 DOI: 10.1016/j.rcl.2022.10.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The anatomy of the ankle and foot is complex, allowing for a wide range of functionality. The movements of the joints represent a complex dynamic interaction. A solid understanding of the characteristics and actions of the anatomic elements helps explain the mechanisms and patterns of injury. This article reviews the anatomy, with special focus on concepts that are the object of recent study and the features that favor the development of symptoms. Good understanding of the surgical procedures helps in providing information to guarantee a favorable outcome. We review the commonly expected postsurgical appearances and the most common postsurgical complications.
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Affiliation(s)
- Maria Pilar Aparisi Gómez
- Department of Radiology, Auckland City Hospital, 2 Park Road, Grafton, Auckland 1023, New Zealand; Department of Radiology, IMSKE, Calle Suiza, 11, Valencia 46024, Spain.
| | - Francisco Aparisi
- Department of Radiology, Hospital Vithas Nueve de Octubre, Calle Valle de la Ballestera, 59, Valencia 46015, Spain
| | - Giuseppe Guglielmi
- Department of Radiology, Hospital San Giovanni Rotondo, Italy; Department of Radiology, University of Foggia, Viale Luigi Pinto 1, Foggia 71100, Italy
| | - Alberto Bazzocchi
- Diagnostic and Interventional Radiology, IRCCS Istituto Ortopedico Rizzoli, Via G. C. Pupilli 1, Bologna 40136, Italy
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Larsen SB, Søgaard SB, Nielsen MB, Torp-Pedersen ST. Diagnostic Considerations of Intermetatarsal Bursitis: A Systematic Review. Diagnostics (Basel) 2023; 13:diagnostics13020211. [PMID: 36673020 PMCID: PMC9857655 DOI: 10.3390/diagnostics13020211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/02/2023] [Accepted: 01/03/2023] [Indexed: 01/09/2023] Open
Abstract
Intermetatarsal bursitis (IMB) is an inflammation of the intermetatarsal bursas. The condition causes forefoot pain with symptoms similar to those of Morton's neuroma (MN). Some studies suggest that IMB is a contributing factor to the development of MN, while others describe the condition as a differential diagnosis. Among patients with rheumatic diseases, IMB is frequent, but the scope is yet to be understood. The aim of this paper was to investigate the diagnostic considerations of IMB and its role in metatarsalgia by a systematic review approach. We identified studies about IMB by searching the electronic databases Pubmed, Embase, Cochrane Library, and Web of Science in September 2022. Of 1362 titles, 28 met the inclusion criteria. They were subdivided according to topic: anatomical studies (n = 3), studies of patients with metatarsalgia (n = 10), and studies of patients with rheumatic diseases (n = 15). We conclude that IMB should be considered a cause of pain in patients with metatarsalgia and patients with rheumatic diseases. For patients presenting with spreading toes/V-sign, IMB should be a diagnostic consideration. Future diagnostic studies about MN should take care to apply a protocol that is able to differ IMB from MN, to achieve a better understanding of their respective role in forefoot pain.
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Affiliation(s)
- Sif Binder Larsen
- Department of Diagnostic Radiology, Rigshospitalet, 2100 Copenhagen, Denmark
- Correspondence: ; Tel.: +45-21457551
| | - Stinne Byrholdt Søgaard
- Department of Diagnostic Radiology, Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
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Zanetti M, Saupe N. Presurgical Perspective and Postsurgical Evaluation of Morton's Neuroma and Other Nerve Lesions. Semin Musculoskelet Radiol 2022; 26:710-716. [PMID: 36791739 DOI: 10.1055/s-0042-1760212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Magnetic resonance imaging (MRI) is a robust method used for both preoperative and postoperative evaluation of Morton's neuroma and other neural lesions. MRI is used to confirm the diagnosis and for precise localization, estimation of outcome, and differential diagnoses. The differential diagnoses include mechanically induced plantar plate ruptures with associated Morton's neuroma-like tumors in the intermetatarsal/interdigital spaces; mechanical fibrosis cushion formations and pseudo bursae in the plantar foot adipose tissue; rheumatologic affections, such as rheumatoid nodules, gouty nodules, and intermetatarsal bursitis; and lastly the tenosynovial giant cell tumor (formerly called pigmented villonodular synovitis). In the postoperative evaluation after resection of Morton's neuroma, the same differential diagnoses must be considered as in the preoperative evaluation. Similarly, a high prevalence (up to 25%) of asymptomatic Morton's neuroma-like findings in the intermetatarsal and interdigital spaces should be kept in mind when interpreting postoperative recurrent forefoot pain after Morton's neuroma resection.
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Affiliation(s)
- Marco Zanetti
- Centre of Musculoskeletal Radiology, Radiology Department, Clinic Hirslanden, Zurich, Switzerland
| | - Nadja Saupe
- Centre of Musculoskeletal Radiology, Radiology Department, Clinic Hirslanden, Zurich, Switzerland
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Ettehadi H, Saragas NP, Ferrao P. Patient reported outcomes following revision neurectomy through a dorsal approach for recurrent interdigital neuroma. Foot Ankle Surg 2022; 28:1210-1214. [PMID: 35393246 DOI: 10.1016/j.fas.2022.03.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/11/2022] [Accepted: 03/29/2022] [Indexed: 02/04/2023]
Abstract
Interdigital neuroma is one of the commonest causes of metatarsalgia. The reported success rate after excision of a primary neuroma is 74%. Recurrent symptoms after neurectomy can be due to a recurrent interdigital neuroma. Recurrent interdigital neuromas can be diagnosed using sound clinical examination and ultrasonography. Surgical excision is the best treatment modality with varying success reported in the literature. We report on the clinical outcome following surgical excision of recurrent interdigital neuromas through a dorsal approach. All patients who had undergone excision of a recurrent interdigital neuroma by a single surgeon between 01/2010 and 12/2019 were identified. Inclusion criteria included patients having a preoperative ultrasound and postoperative histology report. The exclusion criteria were preexisting neuropathy or tarsal tunnel syndrome. Demographic data was collected, and a self-reported foot and ankle score questionnaire (SEFAS) was completed by the patient at their most recent follow-up. Twenty-three patients (25 feet) were included in the study. Mean time of follow-up was 75 (range 14-189) months. The mean age was 49 (range 15-71) years. Eleven (44%) recurrent neuromas were excised from the second webspace and 14 (56%) were excised from the third webspace. All excised masses were confirmed as recurrent neuromas histologically. Regarding the SEFAS score, 17 (73.93%) patients scored as excellent, one (4.34%) as good, three (13.04%) as fair, and two (8.69%) as poor. This long term follow-up study on outcomes after surgery for recurrent interdigital neuroma suggests that excision through a dorsal approach is an effective treatment option with a high patient satisfaction.
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Affiliation(s)
- Hossein Ettehadi
- The Orthopaedic Foot and Ankle Unit, Netcare Linksfield Hospital, Johannesburg, South Africa; Department of Orthopaedic Surgery, University of the Witwatersrand, Johannesburg, South Africa.
| | - Nikiforos Pandelis Saragas
- The Orthopaedic Foot and Ankle Unit, Netcare Linksfield Hospital, Johannesburg, South Africa; Department of Orthopaedic Surgery, University of the Witwatersrand, Johannesburg, South Africa
| | - Paulo Ferrao
- The Orthopaedic Foot and Ankle Unit, Netcare Linksfield Hospital, Johannesburg, South Africa; Department of Orthopaedic Surgery, University of the Witwatersrand, Johannesburg, South Africa
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Sajid IM, Parkunan A, Frost K. Unintended consequences: quantifying the benefits, iatrogenic harms and downstream cascade costs of musculoskeletal MRI in UK primary care. BMJ Open Qual 2021; 10:e001287. [PMID: 34215659 PMCID: PMC8256731 DOI: 10.1136/bmjoq-2020-001287] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 06/07/2021] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVES The largest proportion of general practitioner (GP) magnetic resonance imaging (MRI) is musculoskeletal (MSK), with consistent annual growth. With limited supporting evidence and potential harms from early imaging overuse, we evaluated practice to improve pathways and patient safety. METHODS Cohort evaluation of routinely collected diagnostic and general practice data across a UK metropolitan primary care population. We reviewed patient characteristics, results and healthcare utilisation. RESULTS Of 306 MSK-MRIs requested by 107 clinicians across 29 practices, only 4.9% (95% CI ±2.4%) appeared clearly indicated and only 16.0% (95% CI ±4.1%) received appropriate prior therapy. 37.0% (95% CI ±5.5%) documented patient imaging request. Most had chronic symptoms and half had psychosocial flags. Mental health was addressed in only 11.8% (95% CI ±6.3%) of chronic sufferers with psychiatric illness, suggesting a solely pathoanatomical approach to MSK care. Only 7.8% (95% CI ±3.0%) of all patients were appropriately managed without additional referral. 1.3% (95% CI ±1.3%) of scans revealed diagnoses leading to change in treatment (therapeutic yield). Most imaged patients received pathoanatomical explanations to their symptoms, often based on expected age or activity-related changes. Only 16.7% (95% CI ±4.2%) of results appeared correctly interpreted by GPs, with spurious overperception of surgical targets in 65.4% (95% CI ±5.3%) who suffered 'low-value' (ineffective, harmful or wasteful) post-MRI referral cascades due to misdiagnosis and overdiagnosis. Typically, 20%-30% of GP specialist referrals convert to a procedure, whereas MRI-triggered referrals showed near-zero conversion rate. Imaged patients experienced considerable delay to appropriate care. Cascade costs exceeded direct-MRI costs and GP-MSK-MRI potentially more than doubles expenditure compared with physiotherapist-led assessment services, for little-to-no added therapeutic yield, unjustifiable by cost-consequence or cost-utility analysis. CONCLUSION Unfettered GP-MSK-MRI use has reached unaccceptable indication creep and disutility. Considerable avoidable harm occurs through ubiquitous misinterpretation and salient low-value referral cascades for two-thirds of imaged patients, for almost no change in treatment. Any marginally earlier procedural intervention for a tiny fraction of patients is eclipsed by negative consequences for the vast majority. Only 1-2 patients need to be scanned for one to suffer mismanagement. Direct-access imaging is neither clinically, nor cost-effective and deimplementation could be considered in this setting. GP-MSK-MRI fuels unnecessary healthcare utilisation, generating nocebic patient beliefs and expectations, whilst appropriate care is delayed and a high burden of psychosocial barriers to recovery appear neglected.
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Affiliation(s)
- Imran Mohammed Sajid
- NHS West London Clinical Commissioning Group, London, UK
- University of Global Health Equity, Kigali, Rwanda
| | - Anand Parkunan
- Healthshare Community NHS Musculoskeletal Services, London, UK
| | - Kathleen Frost
- NHS Central London Clinical Commissioning Group, London, UK
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Abstract
BACKGROUND Morton's neuroma is a frequent cause of metatarsalgia. Operative treatment is indicated if nonoperative management has failed. The objective of the present study was to describe a technique of Morton's neuroma excision by a minimally invasive commissural approach and evaluate the long-term outcome and complications. METHODS A retrospective study of 108 patients with Morton's neuroma treated surgically with a commissural approach between September 1990 and December 2010 was performed. The surgical technique is described. Clinical outcomes and complications were evaluated. The average follow-up was 121 months. Eleven patients were men and 97 women. The average age was 49.4 years; 56.8% neuromas were at the third space and 43.2% at the second space. Six patients presented 2 neuromas in the same foot, and 9 patients had bilateral neuroma. RESULTS The visual analog scale (VAS) average pain score was 5.4 points preoperatively and 0.2 points at the final follow-up. The author found a significant difference between the VAS scores preoperatively and postoperatively (P < .01). Excellent and good satisfaction outcomes were achieved in 93.6%. The postoperative complication incidence was 3%. CONCLUSION The author believes a minimally invasive commissural approach has advantages over a dorsal or plantar incision. It is a simple and reproducible technique, with satisfactory outcomes, low complication rates, and a quick return to usual activities. LEVEL OF EVIDENCE Level IV, retrospective case series.
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Song JH, Kang C, Hwang DS, Kang DH, Kim YH. Dorsal suspension for Morton's neuroma: A comparison with neurectomy. Foot Ankle Surg 2019; 25:748-754. [PMID: 30342917 DOI: 10.1016/j.fas.2018.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 08/07/2018] [Accepted: 09/26/2018] [Indexed: 02/04/2023]
Abstract
BACKGROUND The purpose of this study was to investigate and compare the clinical outcomes of dorsal suspension with those of neurectomy for the treatment of Morton's neuroma. METHODS We conducted a retrospective study of dorsal suspension and neurectomy group. The dorsal suspension was performed by dorsal transposition of neuroma over the dorsal transverse ligament after neurolysis. The visual analog scale (VAS), the Foot and Ankle Ability Measure (FAAM), postoperative satisfaction, and complications were evaluated. RESULTS Both groups reported significant pain relief, and there were no significant differences between the groups with respect to postoperative pain. The postoperative FAAM outcomes showed no significant between-group differences. Satisfaction analysis showed 'excellent' and 'good' results in the dorsal suspension and neurectomy groups (95% and 77.7%, respectively). Complications of numbness and paresthesia reported in the dorsal suspension group (5% and 5%, respectively) were significantly fewer than those of neurectomy group (61.1% and 33.3%, respectively) (both, p<.05). CONCLUSIONS With its favorable results, dorsal suspension can be another operative option for the treatment of Morton's neuroma. LEVEL OF EVIDENCE Level III, retrospective comparative case series.
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Affiliation(s)
- Jae Hwang Song
- Department of Orthopedic Surgery, Konyang University Hospital, Konyang University School of Medicine, Daejeon, South Korea
| | - Chan Kang
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea.
| | - Deuk Soo Hwang
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Dong Hun Kang
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yong Hwan Kim
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, South Korea
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Hulstaert T, Shahabpour M, Provyn S, Lenchik L, Simons P, Vanheste R, De Maeseneer M. Forefoot Pain in the Lesser Toes: Anatomical Considerations and Magnetic Resonance Imaging Findings. Can Assoc Radiol J 2019; 70:408-415. [PMID: 31685098 DOI: 10.1016/j.carj.2019.06.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 06/19/2019] [Accepted: 06/27/2019] [Indexed: 01/29/2023] Open
Abstract
Various conditions may result in forefoot pain. Magnetic resonance (MR) imaging allows accurate assessment of many of these conditions. We provide an overview of forefoot disorders divided into bones, capsule and plantar plate, musculotendinous structures, neurovascular structures, and subcutaneous tissue. We review normal anatomical features as well as MR imaging findings of common disorders.
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Affiliation(s)
| | | | - Steven Provyn
- Department of Experimental Anatomy, VUB, Brussels, Belgium
| | - Leon Lenchik
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Philip Simons
- Department of Radiology, Onze Lieve Vrouw Ziekenhuis, Aalst, Belgium
| | - Ruben Vanheste
- Department of Radiology, Onze Lieve Vrouw Ziekenhuis, Aalst, Belgium
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LiMarzi GM, Scherer KF, Richardson ML, Warden DR, Wasyliw CW, Porrino JA, Pettis CR, Lewis G, Mason CC, Bancroft LW. CT and MR Imaging of the Postoperative Ankle and Foot. Radiographics 2017; 36:1828-1848. [PMID: 27726748 DOI: 10.1148/rg.2016160016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A variety of surgical procedures exist for repair of both traumatic and degenerative osseous and soft-tissue pathologic conditions involving the foot and ankle. It is necessary for the radiologist to be familiar with these surgical procedures, so as to assess structural integrity, evaluate for complicating features, and avoid diagnostic pitfalls. Adequate interpretation of postoperative changes often requires access to surgical documentation to evaluate not only the surgery itself but the expected timeline for resolution of normal postoperative changes versus progressive disease. Appropriate use of surgical language in radiology reports is another important skill set to hone and is instrumental in providing a high-quality report to the referring surgeons. The pathophysiology of a myriad of surgical complaints, beginning from the Achilles tendon and concluding at the plantar plate, are presented, as are their common appearances at computed tomography and magnetic resonance imaging. Commonly encountered entities include Achilles tendon tear, spastic equinus, nonspastic equinus, talar dome osteochondral defect, tarsal tunnel syndrome, plantar fasciitis, pes planovalgus, pes cavovarus, peroneal tendinosis, lateral ligament complex pathology, Morton neuroma, plantar plate tear, and metatarsophalangeal joint instability. Computer-generated three-dimensional models are included with many of the procedures to provide a more global view of the surgical anatomy. Correlation with intraoperative photographs is made when available. When appropriate, discussion of postoperative complications, including entities such as infection and failure of graft integration, is presented, although a comprehensive review of postoperative complications is beyond the scope of this article. Notably absent from the current review are some common foot and ankle procedures including hallux valgus and hammertoe corrections, as these are more often evaluated radiographically than with cross-sectional imaging. ©RSNA, 2016.
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Affiliation(s)
- Gary M LiMarzi
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Kurt F Scherer
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Michael L Richardson
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - David R Warden
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Christopher W Wasyliw
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Jack A Porrino
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Christopher R Pettis
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Gideon Lewis
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Christopher C Mason
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
| | - Laura W Bancroft
- From the Department of Radiology, Florida Hospital, 601 E Rollins St, Orlando, FL 32803 (G.M.L., K.F.S., D.R.W., C.W.W., C.R.P., L.W.B.); Department of Radiology, University of Washington, Seattle, Wash (M.L.R., J.A.P.); Department of Podiatry, University of Central Florida, Orlando, Fla (G.L.); and Department of Podiatry, Florida Foot and Ankle Specialist, Lake Mary, Fla (C.C.M.)
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Abstract
MR imaging has an important role in the evaluation of the postoperative foot and ankle. In this article, a variety of operative techniques and postoperative findings in the foot and ankle are described, including tendon and ligament reconstruction, as well as the treatment of tarsal coalition and Morton neuroma. The role of MR imaging in the assessment of complications of foot and ankle surgery is also detailed.
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Affiliation(s)
- Samuel D Madoff
- Department of Radiology, New England Baptist Hospital, Tufts University School of Medicine, 125 Parker Hill Avenue, Boston, MA 02120, USA.
| | - Jeffrey Kaye
- Department of Radiology, New England Baptist Hospital, Tufts University School of Medicine, 125 Parker Hill Avenue, Boston, MA 02120, USA
| | - Joel S Newman
- Department of Radiology, New England Baptist Hospital, Tufts University School of Medicine, 125 Parker Hill Avenue, Boston, MA 02120, USA
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Abstract
OBJECTIVE The objective of our study was to retrospectively assess for differences in imaging appearances of Morton neuromas before and after laser therapy using diagnostic ultrasound (US). MATERIALS AND METHODS A retrospective review was performed to identify patients who underwent US imaging to evaluate for Morton neuroma during the study period (June 1, 2013-July 1, 2014); of the 42 patients identified, 21 underwent US evaluations before and after laser therapy. US reports and images were reviewed and correlated with clinical history. The final study group consisted of 21 patients who had a total of 31 Morton neuromas evaluated using US after treatment. A retrospective review was then performed to characterize the appearances of these lesions before and after therapy followed by an analysis of variables. RESULTS Retrospective US review of 31 pretreatment Morton neuromas showed fusiform, heterogeneously hypoechoic masses with well-defined borders in most cases and that pain was reported when transducer pressure was applied in 97% (30/31) of cases. After treatment, lesions showed ill-defined borders (23/31), and pain with application of transducer pressure was either significantly decreased or absent (29/31); these findings were concordant with the clinical findings. Both of these characteristics were statistically significant (p < 0.0001). In addition, more Morton neuromas occurred in the second intermetatarsal space than in the third intermetatarsal space (p < 0.0001). CONCLUSION US may be used to identify posttreatment changes after laser therapy of Morton neuromas. Posttreatment changes include ill-defined borders and less pain or the absence of pain with the application of transducer pressure. These criteria may be applied in future clinical studies evaluating the efficacy of laser therapy for Morton neuroma.
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Aydinlar EI, Uzun M, Beksac B, Ozden VE, Karaarslan E, Oge AE. Simple electrodiagnostic method for Morton neuroma. Muscle Nerve 2013; 49:193-7. [PMID: 23649839 DOI: 10.1002/mus.23899] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2013] [Indexed: 11/07/2022]
Abstract
INTRODUCTION We describe a simple and quickly applied electrodiagnostic method for confirming the diagnosis of interdigital neuropathy caused by Morton neuroma (MN). METHODS Interdigital nerves II-III and III-IV were stimulated with surface electrodes simultaneously touching the lateral side of 1 toe and the medial side of the other. Recording was also made with surface electrodes. The results of 20 normal controls and 14 patients with MN were evaluated. RESULTS The amplitude and peak latency values elicited in the patients as well as the interside differences revealed an acceptable abnormality rate between 57.1% and 71.4%. CONCLUSIONS Although the most popular and effective method of MN diagnosis is clinical evaluation supported by imaging, electrophysiological studies can, in selected patients, provide valuable information.
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Affiliation(s)
- Elif Ilgaz Aydinlar
- Department of Neurology, Acibadem University School of Medicine, Gulsuyu mah, Fevzi Cakmak Cad. Divan Sok. Maltepe, 34848, Istanbul, Turkey
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Sofka CM. Postoperative magnetic resonance imaging of the foot and ankle. J Magn Reson Imaging 2013; 37:556-65. [DOI: 10.1002/jmri.23792] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 07/27/2012] [Indexed: 11/06/2022] Open
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Torres-Claramunt R, Ginés A, Pidemunt G, Puig L, de Zabala S. MRI and ultrasonography in Morton's neuroma: Diagnostic accuracy and correlation. Indian J Orthop 2012; 46:321-5. [PMID: 22719120 PMCID: PMC3377144 DOI: 10.4103/0019-5413.96390] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The diagnosis of Morton's neuroma is based primarily on clinical findings. Ultrasonography (US) and magnetic resonance image (MRI) studies are considered complementary diagnostic techniques. The aim of this study was to establish the correlation and sensitivity of both techniques used to diagnose Morton's neuroma. MATERIALS AND METHODS Thirty seven patients (43 intermetatarsal spaces) with Morton's neuroma operated were retrospectively reviewed. In all cases MRI or ultrasound was performed to complement clinical diagnosis of Morton's neuroma. In all cases, a histopathological examination confirmed the diagnosis. Estimates of sensitivity were made and correlation (kappa statistics) was assessed for both techniques. RESULTS Twenty seven women and 10 men participated with a mean age of 60 years. Double lesions presented in six patients. The second intermetatarsal space was affected in 10 patients and the third in 33 patients. An MRI was performed in 41 cases and a US in 23 cases. In 21 patients, both an MRI and a US were performed. With regard to the 41 MRIs performed, 34 were positive for Morton's neuroma and 7 were negative. MRI sensitivity was 82.9% [95% confidence interval (CI): 0.679-0.929]. Thirteen out of 23 US performed were positive and 10 US were negative. US sensitivity was 56.5% (95% CI: 0.345-0.768). Relative to the 21 patients on whom both techniques were carried out, the agreement between both techniques was poor (kappa statistics 0.31). CONCLUSION Although ancillary studies may be required to confirm the clinical diagnosis in some cases, they are probably not necessary for the diagnosis of Morton's neuroma. MRI had a higher sensitivity than US and should be considered the technique of choice in those cases. However, a negative result does not exclude the diagnosis (false negative 17%).
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Affiliation(s)
- R Torres-Claramunt
- Orthopaedic Department of the Parc de Salut Mar. Passeig Marítim 25-29, 08003 Barcelona, Spain
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Abreu E, Aubert S, Wavreille G, Gheno R, Canella C, Cotten A. Peripheral tumor and tumor-like neurogenic lesions. Eur J Radiol 2011; 82:38-50. [PMID: 21561733 DOI: 10.1016/j.ejrad.2011.04.036] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Accepted: 03/29/2011] [Indexed: 01/30/2023]
Abstract
Neoplasms of neurogenic origin account for about 12% of all benign and 8% of all malignant soft tissue neoplasms. Traumatic neuroma, Morton neuroma, lipomatosis of a nerve, nerve sheath ganglion, perineurioma, benign and malignant peripheral nerve sheath tumors (PNST) are included in this group of pathologies. Clinical and radiologic evaluation of patients with neurogenic tumors and pseudotumors often reveals distinctive features. In this context, advanced imaging techniques, especially ultrasound (US) and magnetic resonance (MR) play an important role in the characterization of these lesions. Imaging findings such as location of a soft tissue mass in the region of a major nerve, nerve entering or exiting the mass, fusiform shape, abnormalities of the muscle supplied by the nerve, split-fat sign, target sign and fascicular appearance should always evoke a peripheric nerve sheath neoplasm. Although no single imaging finding or combination of findings allows definitive differentiation between benign from malign peripheric neurogenic tumors, both US and MR imaging may show useful features that can lead us to a correct diagnosis and improve patient treatment. Traumatic neuromas and Morton neuromas are commonly associated to an amputation stump or are located in the intermetatarsal space. Lipomatosis of a nerve usually appears as a nerve enlargement, with thickened nerve fascicles, embedded in evenly distributed fat. Nerve sheath ganglion has a cystic appearance and commonly occurs at the level of the knee. Intraneural perineuroma usually affects young people and manifests as a focal and fusiform nerve enlargement. In this article, we review clinical characteristics and radiologic appearances of these neurogenic lesions, observing pathologic correlation, when possible.
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Affiliation(s)
- Evandro Abreu
- Service de Radiologie et Imagerie Musculosquelettique, Centre de Consultation et Imagerie de l'Appareil Locomoteur, CHRU de Lille, 59037 Lille, France
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