Acetabular stress fractures in military endurance athletes and recruits: incidence and MRI and scintigraphic findings

“…Stress fractures in the pubic and ischial bones are relatively rare, and published reports have mostly concentrated the sports-related injuries in young patients [14][15][16]. A few reports have described the pubic or ischial fracture as a complication of acetabular osteotomies, including CPO [9][10][11].…”

Section: Discussionmentioning

confidence: 99%

Effects of Curved Periacetabular Osteotomy on the Stress Fields of the Pubic Rami and Ischium: A Finite Element Model Analysis

Imai¹,

Dohmae²,

Suda³

et al. 2013

OJO

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Background: Postoperative pubic or ischial stress fracture may be a complication after curved periacetabular osteotomy (CPO). The discontinuity of the superior pubic rami is a risk factor for this complication. We investigated the stress field differences in standing and sitting positions after CPO. Methods: We used finite element analysis to assess the effects of inferior pubic rami and ischial fractures with or without discontinuity of superior pubic rami. We used the "union model", obtained from a bony union at the osteotomy site of the superior pubic rami from 38-year-old woman who had undergone CPO for left hip dysplasia. We deleted the bony union region and created a discontinuity in the superior pubic rami equal to the non-union, creating the "discontinuity model". We compared the stress field and stress value in the simulated standing and half weight-bearing positions on the operative side, one-legged standing position on the non-operative side, and the sitting position. Findings: In 4 cases, the inferior rami experienced the highest stress. Stress values in the discontinuity model were higher than those in the union model: 1.7 times in the case of one-legged standing on the operative side, 2.4 times in the case of half weight-bearing on the operative side, 3.8 times in the case of one-legged standing on the non-operative side, and 2.0 times in the sitting position, respectively. Interpretation: We recommend patients delay weight bearing on the operative side, avoid the sitting position as long as possible, and sit down slowly to prevent inferior pubic rami and ischial fractures after CPO.

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“…Around the hip joint, common sites for stress fractures in athletes are the acetabulum and the femur. For acetabular stress fractures, two patterns have been described in endurance athletes: fractures in the acetabular roof and fractures in the anterior column (58). Femoral neck stress fractures are an important injury in runners (59).…”

Section: State Of the Art: Hip Imaging In Athletes Agten Et Almentioning

confidence: 99%

Hip Imaging in Athletes: Sports Imaging Series

et al. 2016

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Hip or groin pain in athletes is common and clinical presentation is often nonspecific. Imaging is a very important diagnostic step in the work-up of athletes with hip pain. This review article provides an overview on hip biomechanics and discusses strategies for hip imaging modalities such as radiography, ultrasonography, computed tomography, and magnetic resonance (MR) imaging (MR arthrography and traction MR arthrography). The authors explain current concepts of femoroacetabular impingement and the problem of high prevalence of cam-and pincer-type morphology in asymptomatic persons. With the main focus on MR imaging, the authors present abnormalities of the hip joint and the surrounding soft tissues that can occur in athletes: intraarticular and extraarticular hip impingement syndromes, labral and cartilage disease, microinstability of the hip, myotendinous injuries, and athletic pubalgia. Hip or groin pain in athletes is common and clinical presentation is often nonspecific. Imaging is a very important diagnostic step in the work-up of athletes with hip pain. This review article provides an overview on hip biomechanics and discusses strategies for hip imaging modalities such as radiography, ultrasonography, computed tomography, and magnetic resonance (MR) imaging (MR arthrography and traction MR arthrography). The authors explain current concepts of femoroacetabular impingement and the problem of high prevalence of cam-and pincer-type morphology in asymptomatic persons. With the main focus on MR imaging, the authors present abnormalities of the hip joint and the surrounding soft tissues that can occur in athletes: intraarticular and extraarticular hip impingement syndromes, labral and cartilage disease, microinstability of the hip, myotendinous injuries, and athletic pubalgia. After reading the article and taking the test, the reader will be able to:n Describe biomechanical implications of torsional malalignment and other atypical forms of hip impingement n Describe the most common MR imaging findings in femoroacetabular impingement and identify anatomic variants n Describe imaging characteristics of a Morel-Lavallée lesion and identify the anatomic compartment where this lesion typically occurs n Identify common stress fractures around the hip joint in athletes and discuss potential complications n Describe features of myotendinous injuries around the hip n Describe the anatomic relationship of the sacrotuberous ligament and the origin of the hamstring tendons n Describe the anatomic structures involved in an athletic pubalgia Accreditation and Designation Statement The RSNA is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians. The RSNA designates this journal-based SA-CME activity for a maximum of 1.0 AMA PRA Category 1 Credit ™ . Physicians should claim only the credit commensurate with the extent of their participation in the activity. Disclosure StatementThe ACCME requires that the RSNA, as an accredited prov...

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Acetabular stress fractures in military endurance athletes and recruits: incidence and MRI and scintigraphic findings

Abstract: Stress fractures are commonplace in military populations, especially endurance trainees. Acetabular stress fractures are rare and therefore unrecognized, but do occur and may be a cause for activity-related hip pain in a small percentage of military endurance athletes and recruits.

Cited by 60 publications

References 8 publications

Endurance running acutely raises plasma osteoprotegerin and lowers plasma receptor activator of nuclear factor κ B ligand

Endurance running acutely raises plasma osteoprotegerin and lowers plasma receptor activator of nuclear factor κ B ligand

Effects of Curved Periacetabular Osteotomy on the Stress Fields of the Pubic Rami and Ischium: A Finite Element Model Analysis

Hip Imaging in Athletes: Sports Imaging Series

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