Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case report

Abstract Background Occult proximal femoral fractures do not appear as fracture lines in radiographs, causing misdiagnosis and delayed diagnosis unless additional imaging studies, such as computed tomography or magnetic resonance imaging, are performed. Here, we present a 51-year-old male with an oc...

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Main Authors: Ji-yeon Lee, Akihito Oya, Osahiko Tsuji, Taro Umezu, Arihiko Kanaji, Yasuo Niki, Masaya Nakamura, Morio Matsumoto
Format: Article
Language:English
Published: BMC 2023-05-01
Series:Journal of Medical Case Reports
Subjects:
Online Access:https://doi.org/10.1186/s13256-023-03951-9
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author Ji-yeon Lee
Akihito Oya
Osahiko Tsuji
Taro Umezu
Arihiko Kanaji
Yasuo Niki
Masaya Nakamura
Morio Matsumoto
author_facet Ji-yeon Lee
Akihito Oya
Osahiko Tsuji
Taro Umezu
Arihiko Kanaji
Yasuo Niki
Masaya Nakamura
Morio Matsumoto
author_sort Ji-yeon Lee
collection DOAJ
description Abstract Background Occult proximal femoral fractures do not appear as fracture lines in radiographs, causing misdiagnosis and delayed diagnosis unless additional imaging studies, such as computed tomography or magnetic resonance imaging, are performed. Here, we present a 51-year-old male with an occult proximal femoral fracture who experienced radiating unilateral leg pain that took 3 months to be diagnosed because his symptoms mimicked lumbar spine disease. Case presentation A 51-year-old Japanese male experienced persistent lower back and left thigh pain after falling off a bicycle, and was referred to our hospital 3 months thereafter. Whole-spine computed tomography and magnetic resonance imaging revealed minute ossification of the ligamentum flavum at T5/6 without spinal nerve compression, but this did not explain his leg pain. Additional magnetic resonance imaging of the hip joint revealed a fresh left proximal femoral fracture without displacement. He underwent surgery for in situ fixation using a compression hip screw. Post-surgical pain relief was immediate. Conclusions Misdiagnosis of occult femoral fractures as lumbar spinal disease may occur if distally radiating referred pain is present. Hip joint disease should be considered as a differential diagnosis in cases of sciatica-like pain with an unknown spinal origin and no specific findings on spinal computed tomography or magnetic resonance imaging accounting for the leg pain, especially following trauma.
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spelling doaj.art-b1274f70c36345b9bd96186f87ca125d2023-05-28T11:17:49ZengBMCJournal of Medical Case Reports1752-19472023-05-011711610.1186/s13256-023-03951-9Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case reportJi-yeon Lee0Akihito Oya1Osahiko Tsuji2Taro Umezu3Arihiko Kanaji4Yasuo Niki5Masaya Nakamura6Morio Matsumoto7Department of Orthopaedic Surgery, Keio University School of MedicineDepartment of Orthopaedic Surgery, Keio University School of MedicineDepartment of Orthopaedic Surgery, Keio University School of MedicineDepartment of Orthopaedic Surgery, Keio University School of MedicineDepartment of Orthopaedic Surgery, Keio University School of MedicineDepartment of Orthopaedic Surgery, Keio University School of MedicineDepartment of Orthopaedic Surgery, Keio University School of MedicineDepartment of Orthopaedic Surgery, Keio University School of MedicineAbstract Background Occult proximal femoral fractures do not appear as fracture lines in radiographs, causing misdiagnosis and delayed diagnosis unless additional imaging studies, such as computed tomography or magnetic resonance imaging, are performed. Here, we present a 51-year-old male with an occult proximal femoral fracture who experienced radiating unilateral leg pain that took 3 months to be diagnosed because his symptoms mimicked lumbar spine disease. Case presentation A 51-year-old Japanese male experienced persistent lower back and left thigh pain after falling off a bicycle, and was referred to our hospital 3 months thereafter. Whole-spine computed tomography and magnetic resonance imaging revealed minute ossification of the ligamentum flavum at T5/6 without spinal nerve compression, but this did not explain his leg pain. Additional magnetic resonance imaging of the hip joint revealed a fresh left proximal femoral fracture without displacement. He underwent surgery for in situ fixation using a compression hip screw. Post-surgical pain relief was immediate. Conclusions Misdiagnosis of occult femoral fractures as lumbar spinal disease may occur if distally radiating referred pain is present. Hip joint disease should be considered as a differential diagnosis in cases of sciatica-like pain with an unknown spinal origin and no specific findings on spinal computed tomography or magnetic resonance imaging accounting for the leg pain, especially following trauma.https://doi.org/10.1186/s13256-023-03951-9Occult fractureFemur neckEarly diagnosisSciatica
spellingShingle Ji-yeon Lee
Akihito Oya
Osahiko Tsuji
Taro Umezu
Arihiko Kanaji
Yasuo Niki
Masaya Nakamura
Morio Matsumoto
Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case report
Journal of Medical Case Reports
Occult fracture
Femur neck
Early diagnosis
Sciatica
title Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case report
title_full Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case report
title_fullStr Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case report
title_full_unstemmed Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case report
title_short Occult proximal femoral fracture with radiating leg pain masquerading as sciatica: a case report
title_sort occult proximal femoral fracture with radiating leg pain masquerading as sciatica a case report
topic Occult fracture
Femur neck
Early diagnosis
Sciatica
url https://doi.org/10.1186/s13256-023-03951-9
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