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Case Reports
. 2018 Mar 1:2018:bcr2017222265.
doi: 10.1136/bcr-2017-222265.

Unique simultaneous avulsion fracture of both the proximal and distal insertion sites of the anterior cruciate ligament

Kristian Samuelsson  1   2 , Eleonor Svantesson  2 , Eric Hamrin Senorski  3 , Bengt Östman  4
Affiliations
Case Reports

Unique simultaneous avulsion fracture of both the proximal and distal insertion sites of the anterior cruciate ligament

Kristian Samuelsson et al. BMJ Case Rep. .

Abstract

February is a busy month for the ambulance skiing patrol at the skiing resorts in Norway and on this day, a call regarding an 11-year-old boy on one of the hills reached the team. What no one knew at that moment was that this boy had suffered a unique injury and that his X-rays would reveal something that, prior to this, had never been described in the history of mankind. This patient had suffered a simultaneous avulsion fracture of both the femoral and tibial insertion sites of the anterior cruciate ligament without suffering any other injuries to the knee. The injury was treated conservatively and at 1-year follow-up, the patient was completely recovered.

Keywords: knee injuries; knee laxity; ligament rupture; orthopaedics; paediatrics.

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Conflict of interest statement

Competing interests: None declared.

Figures

Figure 1
Figure 1
Frontal plain radiograph of the right knee showing the medial intercondylar avulsion and the femoral avulsion.
Figure 2
Figure 2
CT images of the fractures. (A) Coronary view indicating both the femoral and the tibial avulsion fractures. (B) The femoral avulsion fracture visualised at the medial aspect of the lateral condyle.
Figure 3
Figure 3
(A) Three-dimensional CT image from a posterior view indicating the femoral avulsion. (B) Anterolateral view enables visualisation of the tibial avulsion fracture.
Figure 4
Figure 4
Sagittal projection of the MRI at 1-year follow-up.
Figure 5
Figure 5
Frontal projection of the MRI at 1-year follow-up.
Figure 6
Figure 6
Coronal-oblique projection of the MRI at 1-year follow-up.
See this image and copyright information in PMC

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