Is an extension of the safe zone possible without jeopardizing the proximal radioulnar joint when performing a radial head plate osteosynthesis?

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Is an extension of the safe zone possible without jeopardizing the proximal radioulnar joint when performing a radial head plate osteosynthesis? / Ries, Christian; Müller, Marcel; Wegmann, Kilian; Pfau, Doreen B; Müller, Lars P; Burkhart, Klaus J.

In: J SHOULDER ELB SURG, Vol. 24, No. 10, 10.2015, p. 1627-34.

Research output: SCORING: Contribution to journalSCORING: Journal articleResearchpeer-review

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@article{ded19bff653a475abd0f4750d6b5d735,
title = "Is an extension of the safe zone possible without jeopardizing the proximal radioulnar joint when performing a radial head plate osteosynthesis?",
abstract = "BACKGROUND: Proximal radial fractures are common elbow injuries. Because of the fracture pattern, stability criteria, or plate configuration, a plate position outside the {"}safe zone{"} (SZ) may be required in some cases when performing a radial head plate osteosynthesis. We examined the gross anatomy of the radial head and analyzed different so-called low-profile and precontoured radial head and neck plates with respect to the SZ.MATERIALS AND METHODS: Macroscopic measurements of the radial head and neck of 22 formalin-fixed human cadaveric upper extremities were obtained. The SZ was determined by maximum forearm rotation. If the edge of a plate could be extended beyond the respective SZ boundary without jeopardizing the proximal radioulnar joint (PRUJ) in maximum forearm rotation, a new plate-specific SZ boundary was set.RESULTS: The mean SZ was 133° (SD, 14°). Among the 5 plates studied, only the 2 radial neck designs allowed the anterior edge of the plate to partially pass the lesser sigmoid notch of the ulna and consequently afforded a significant extension of the SZ in maximum pronation. All 3 radial head designs had to remain within the SZ to avoid interference with the PRUJ. A safe plate position depends on individual plate dimensions, particularly the proximal plate width, and the diameter of the radial head. The smaller the head diameter, the more accurately a plate must be placed within the SZ.CONCLUSIONS: If an extension of the SZ in radial head plate osteosynthesis is not essential, we recommend respecting the SZ to minimize the possibility of interference with the PRUJ.",
keywords = "Adult, Aged, Aged, 80 and over, Bone Plates, Cadaver, Dissection, Elbow Joint/surgery, Epiphyses, Female, Fracture Fixation, Internal/instrumentation, Humans, Male, Middle Aged, Pronation, Radius/anatomy & histology, Radius Fractures/surgery, Rotation",
author = "Christian Ries and Marcel M{\"u}ller and Kilian Wegmann and Pfau, {Doreen B} and M{\"u}ller, {Lars P} and Burkhart, {Klaus J}",
note = "Copyright {\textcopyright} 2015 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.",
year = "2015",
month = oct,
doi = "10.1016/j.jse.2015.03.010",
language = "English",
volume = "24",
pages = "1627--34",
number = "10",

}

RIS

TY - JOUR

T1 - Is an extension of the safe zone possible without jeopardizing the proximal radioulnar joint when performing a radial head plate osteosynthesis?

AU - Ries, Christian

AU - Müller, Marcel

AU - Wegmann, Kilian

AU - Pfau, Doreen B

AU - Müller, Lars P

AU - Burkhart, Klaus J

N1 - Copyright © 2015 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

PY - 2015/10

Y1 - 2015/10

N2 - BACKGROUND: Proximal radial fractures are common elbow injuries. Because of the fracture pattern, stability criteria, or plate configuration, a plate position outside the "safe zone" (SZ) may be required in some cases when performing a radial head plate osteosynthesis. We examined the gross anatomy of the radial head and analyzed different so-called low-profile and precontoured radial head and neck plates with respect to the SZ.MATERIALS AND METHODS: Macroscopic measurements of the radial head and neck of 22 formalin-fixed human cadaveric upper extremities were obtained. The SZ was determined by maximum forearm rotation. If the edge of a plate could be extended beyond the respective SZ boundary without jeopardizing the proximal radioulnar joint (PRUJ) in maximum forearm rotation, a new plate-specific SZ boundary was set.RESULTS: The mean SZ was 133° (SD, 14°). Among the 5 plates studied, only the 2 radial neck designs allowed the anterior edge of the plate to partially pass the lesser sigmoid notch of the ulna and consequently afforded a significant extension of the SZ in maximum pronation. All 3 radial head designs had to remain within the SZ to avoid interference with the PRUJ. A safe plate position depends on individual plate dimensions, particularly the proximal plate width, and the diameter of the radial head. The smaller the head diameter, the more accurately a plate must be placed within the SZ.CONCLUSIONS: If an extension of the SZ in radial head plate osteosynthesis is not essential, we recommend respecting the SZ to minimize the possibility of interference with the PRUJ.

AB - BACKGROUND: Proximal radial fractures are common elbow injuries. Because of the fracture pattern, stability criteria, or plate configuration, a plate position outside the "safe zone" (SZ) may be required in some cases when performing a radial head plate osteosynthesis. We examined the gross anatomy of the radial head and analyzed different so-called low-profile and precontoured radial head and neck plates with respect to the SZ.MATERIALS AND METHODS: Macroscopic measurements of the radial head and neck of 22 formalin-fixed human cadaveric upper extremities were obtained. The SZ was determined by maximum forearm rotation. If the edge of a plate could be extended beyond the respective SZ boundary without jeopardizing the proximal radioulnar joint (PRUJ) in maximum forearm rotation, a new plate-specific SZ boundary was set.RESULTS: The mean SZ was 133° (SD, 14°). Among the 5 plates studied, only the 2 radial neck designs allowed the anterior edge of the plate to partially pass the lesser sigmoid notch of the ulna and consequently afforded a significant extension of the SZ in maximum pronation. All 3 radial head designs had to remain within the SZ to avoid interference with the PRUJ. A safe plate position depends on individual plate dimensions, particularly the proximal plate width, and the diameter of the radial head. The smaller the head diameter, the more accurately a plate must be placed within the SZ.CONCLUSIONS: If an extension of the SZ in radial head plate osteosynthesis is not essential, we recommend respecting the SZ to minimize the possibility of interference with the PRUJ.

KW - Adult

KW - Aged

KW - Aged, 80 and over

KW - Bone Plates

KW - Cadaver

KW - Dissection

KW - Elbow Joint/surgery

KW - Epiphyses

KW - Female

KW - Fracture Fixation, Internal/instrumentation

KW - Humans

KW - Male

KW - Middle Aged

KW - Pronation

KW - Radius/anatomy & histology

KW - Radius Fractures/surgery

KW - Rotation

U2 - 10.1016/j.jse.2015.03.010

DO - 10.1016/j.jse.2015.03.010

M3 - SCORING: Journal article

C2 - 25940383

VL - 24

SP - 1627

EP - 1634

IS - 10

ER -