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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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Elghazy MA, Whitelaw KC, Waryasz GR, Guss D, Johnson AH, DiGiovanni CW. Isolated Intermetatarsal Ligament Release as Primary Operative Management for Morton's Neuroma: Short-term Results. Foot Ankle Spec 2022; 15:338-345. [PMID: 32954808 DOI: 10.1177/1938640020957851] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Although the precise pathoetiology of Morton's neuroma remains unclear, chronic nerve entrapment from the overlying intermetatarsal ligament (IML) may play a role. Traditional operative management entails neuroma excision but risks unpredictable formation of stump neuroma. MATERIALS AND METHODS Medical records were examined for adult patients who failed at least 3 months of conservative treatment for symptomatic and recalcitrant Morton's neuroma and who then underwent isolated IML decompression without neuroma resection. RESULTS A total of 12 patients underwent isolated IML decompression for Morton's neuroma with an average follow-up of 13.5 months. Visual Analog Pain Scale averaged 6.4 ± 1.8 (4-9) preoperatively and decreased to an average of 2 ± 2.1 (0-7) at final follow-up (P = .002). All patients reported significant improvement. CONCLUSION Isolated IML release of chronically symptomatic Morton's neuroma shows promising short-term results regarding pain relief, with no demonstrated risk of recurrent neuroma formation, permanent numbness, or postoperative symptom exacerbation. LEVEL OF EVIDENCE Level IV: Case series.
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Affiliation(s)
- Mohamed Abdelaziz Elghazy
- Foot and Ankle Service, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (MAE, GRW, KCW).,the Department of Orthopedic Surgery, Faculty of Medicine, Mansoura University, Egypt (MAE).,Georgetown University School of Medicine, Washington (KCW).,Harvard Medical School, Foot and Ankle Service, Department of Orthopaedic Surgery, Massachusetts General Hospital and Newton-Wellesley Hospital, Boston, Massachusetts (DG, CWD).,Foot and Ankle Service, Hospital of Special Surgery, New York, NY (AHJ)
| | - Kathryn C Whitelaw
- Foot and Ankle Service, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (MAE, GRW, KCW).,the Department of Orthopedic Surgery, Faculty of Medicine, Mansoura University, Egypt (MAE).,Georgetown University School of Medicine, Washington (KCW).,Harvard Medical School, Foot and Ankle Service, Department of Orthopaedic Surgery, Massachusetts General Hospital and Newton-Wellesley Hospital, Boston, Massachusetts (DG, CWD).,Foot and Ankle Service, Hospital of Special Surgery, New York, NY (AHJ)
| | - Gregory R Waryasz
- Foot and Ankle Service, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (MAE, GRW, KCW).,the Department of Orthopedic Surgery, Faculty of Medicine, Mansoura University, Egypt (MAE).,Georgetown University School of Medicine, Washington (KCW).,Harvard Medical School, Foot and Ankle Service, Department of Orthopaedic Surgery, Massachusetts General Hospital and Newton-Wellesley Hospital, Boston, Massachusetts (DG, CWD).,Foot and Ankle Service, Hospital of Special Surgery, New York, NY (AHJ)
| | - Daniel Guss
- Foot and Ankle Service, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (MAE, GRW, KCW).,the Department of Orthopedic Surgery, Faculty of Medicine, Mansoura University, Egypt (MAE).,Georgetown University School of Medicine, Washington (KCW).,Harvard Medical School, Foot and Ankle Service, Department of Orthopaedic Surgery, Massachusetts General Hospital and Newton-Wellesley Hospital, Boston, Massachusetts (DG, CWD).,Foot and Ankle Service, Hospital of Special Surgery, New York, NY (AHJ)
| | - Anne H Johnson
- Foot and Ankle Service, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (MAE, GRW, KCW).,the Department of Orthopedic Surgery, Faculty of Medicine, Mansoura University, Egypt (MAE).,Georgetown University School of Medicine, Washington (KCW).,Harvard Medical School, Foot and Ankle Service, Department of Orthopaedic Surgery, Massachusetts General Hospital and Newton-Wellesley Hospital, Boston, Massachusetts (DG, CWD).,Foot and Ankle Service, Hospital of Special Surgery, New York, NY (AHJ)
| | - Christopher W DiGiovanni
- Foot and Ankle Service, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (MAE, GRW, KCW).,the Department of Orthopedic Surgery, Faculty of Medicine, Mansoura University, Egypt (MAE).,Georgetown University School of Medicine, Washington (KCW).,Harvard Medical School, Foot and Ankle Service, Department of Orthopaedic Surgery, Massachusetts General Hospital and Newton-Wellesley Hospital, Boston, Massachusetts (DG, CWD).,Foot and Ankle Service, Hospital of Special Surgery, New York, NY (AHJ)
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The Vulcan salute sign: a non-sensitive but specific sign for Morton's neuroma on radiographs. Skeletal Radiol 2022; 51:581-586. [PMID: 34263343 PMCID: PMC8763827 DOI: 10.1007/s00256-021-03851-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/10/2021] [Accepted: 06/21/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To assess the value of the divergence of toes on conventional radiographs of the foot for diagnosing Morton's neuroma. METHODS This retrospective case-control study was approved by the local ethics committee. In 100 patients with MRI-proven Morton's neuroma 2/3 or 3/4 (study group) and 100 patients without (control group), conventional weight-bearing dorso-plantar view radiographs were evaluated for the subjective presence of interphalangeal divergence, called the Vulcan salute sign or V-sign, by two blinded, independent musculoskeletal radiologists. Interphalangeal angles (2/3 and 3/4) and intermetatarsal angle I/V were measured. The t test and chi-squared test were used to compare the groups. Diagnostic performance was calculated. Interobserver reliability was assessed using κ statistics and intraclass correlation coefficient (ICC). RESULTS The difference between the groups was significant (P < 0.05) regarding the presence of the V-sign, which was found in 30 of 100 patients with Morton neuroma and in 3 of 100 control patients, with a sensitivity of 30% and a specificity of 97%. The differences between interphalangeal angles were significant (P < 0.05) between the groups. The interphalangeal angle 2/3 mean values were 7.9° (± 4.8) for the study group vs 5.4° (± 2.6) for the controls; the 3/4 angle values were 6.5° (± 3.8) and 3.4° (± 2.5), respectively. There was no significant difference between the groups in the intermetatarsal angle I/V. Interobserver agreement was substantial for the V-sign, with a κ value of 0.78. The ICC was excellent concerning angle measurements, with all values ≥ 0.94. CONCLUSION The Vulcan salute sign on conventional radiographs is specific for Morton's neuroma.
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