CT-basierten Klassifikationshilfe für Acetabulumfrakturen: Evaluation und klinische Erprobung

TY - JOUR

T1 - CT-basierten Klassifikationshilfe für Acetabulumfrakturen: Evaluation und klinische Erprobung

AU - Schäffler, A

AU - Fensky, F

AU - Knöschke, D

AU - Haas, N P

AU - Becken, A G

AU - Stöckle, U

AU - König, B

PY - 2013/11/1

Y1 - 2013/11/1

N2 - BACKGROUND: The basis for the classification of acetabular fractures depends on accurate radiological diagnostics. The use of conventional X-rays alone implicates a low intrapersonal reproducibility and interpersonal reliability. By applying computed tomography (CT) at an early stage in the emergency room, the typical diagonal X-rays of ala and obturator, on which the classification is based, are no longer recommended. The aim of this study was to develop a new reliable classification system based on standardized CT slices according to the system of Judet and Letournel without using diagonal X-rays.MATERIALS AND METHODS: In this study 12 select cases with acetabular fractures were peer reviewed. In each case eight characteristic CT slices (five axial, two coronal and one sagittal) were selected as well as the conventional anteroposterior X-ray of the pelvis. All cases were peer reviewed by 14 members of the "AG Becken" (working group pelvis). The classification of the acetabular fractures was based on Judet and Letournel and the results were compared with the reference classification. The results were scaled according to differences to the original classification and the relevance to the approach as well as the medical qualification of the member.RESULTS: A total of 167 out of 168 possible classifications were conducted, 90 cases (54 %) were in accordance with the reference classification. In 69 cases (41 %) the outcome was different, which would have had no influence on the choice of the surgical approach. A wrong classification was present eight times (5 %). According to the medical qualification status the senior physicians were right in 54%, the residents in 53 %. Within the group of senior physicians 7.5 % of the classifications were completely wrong and 93 % of the participating members would have preferred to have more CT slices.CONCLUSION: The CT-based classification developed represents an adaption to the current standard of diagnostics of acetabular fractures and represents a step towards simplification of the classification. It is suitable to estimate the correct surgical approach and the behavior of the fracture. For an accurate classification and the association to one of the fracture types in the system of Judet and Letournel more slices and 3D reconstructions (MPR) are necessary.

AB - BACKGROUND: The basis for the classification of acetabular fractures depends on accurate radiological diagnostics. The use of conventional X-rays alone implicates a low intrapersonal reproducibility and interpersonal reliability. By applying computed tomography (CT) at an early stage in the emergency room, the typical diagonal X-rays of ala and obturator, on which the classification is based, are no longer recommended. The aim of this study was to develop a new reliable classification system based on standardized CT slices according to the system of Judet and Letournel without using diagonal X-rays.MATERIALS AND METHODS: In this study 12 select cases with acetabular fractures were peer reviewed. In each case eight characteristic CT slices (five axial, two coronal and one sagittal) were selected as well as the conventional anteroposterior X-ray of the pelvis. All cases were peer reviewed by 14 members of the "AG Becken" (working group pelvis). The classification of the acetabular fractures was based on Judet and Letournel and the results were compared with the reference classification. The results were scaled according to differences to the original classification and the relevance to the approach as well as the medical qualification of the member.RESULTS: A total of 167 out of 168 possible classifications were conducted, 90 cases (54 %) were in accordance with the reference classification. In 69 cases (41 %) the outcome was different, which would have had no influence on the choice of the surgical approach. A wrong classification was present eight times (5 %). According to the medical qualification status the senior physicians were right in 54%, the residents in 53 %. Within the group of senior physicians 7.5 % of the classifications were completely wrong and 93 % of the participating members would have preferred to have more CT slices.CONCLUSION: The CT-based classification developed represents an adaption to the current standard of diagnostics of acetabular fractures and represents a step towards simplification of the classification. It is suitable to estimate the correct surgical approach and the behavior of the fracture. For an accurate classification and the association to one of the fracture types in the system of Judet and Letournel more slices and 3D reconstructions (MPR) are necessary.

KW - Acetabulum

KW - Adult

KW - Aged

KW - Aged, 80 and over

KW - Algorithms

KW - Anatomic Landmarks

KW - Female

KW - Fractures, Bone

KW - Humans

KW - Male

KW - Middle Aged

KW - Observer Variation

KW - Reproducibility of Results

KW - Sensitivity and Specificity

KW - Tomography, X-Ray Computed

KW - Trauma Severity Indices

KW - Young Adult

U2 - 10.1007/s00113-013-2494-y

DO - 10.1007/s00113-013-2494-y

M3 - SCORING: Zeitschriftenaufsatz

C2 - 23949195

VL - 116

SP - 1006

EP - 1014

JO - UNFALLCHIRURGIE

JF - UNFALLCHIRURGIE

SN - 0177-5537

IS - 11

ER -