Journal of shoulder and elbow surgery · 2014
Anatomic study of the flexor carpi ulnaris muscle and its application to soft tissue coverage of the elbow with clinical correlation.
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Sharpe Frances, Barry Piers, Lin Steven D, Stevanovic Milan
Аннотация
BACKGROUND: The posterior elbow is prone to soft tissue loss that may require reconstructive methods for wound healing to be achieved. The flexor carpi ulnaris (FCU) muscle has been described for coverage in case reports and small series. Previous studies give conflicting anatomic findings about the dominant vascular pedicle for the FCU.
METHODS: Twenty-five cadaveric specimens were dissected. Pedicle location, number, and distance from the medial epicondyle were recorded along with the extent of posterior elbow coverage. Chart review was conducted during a 4-year period. Eight patients who underwent FCU rotational flap coverage were identified. Those flaps relied entirely on a single proximal pedicle.
RESULTS: The vascular pedicles from the ulnar artery or recurrent ulnar artery were identified in 24 of 25 specimens. The average distance from the tip of the medial epicondyle to the first pedicle was 5.7 cm (range, 3 to 10 cm). The length of muscle coverage proximal to the olecranon tip averaged 9.3 cm. The clinical follow-up of 7 patients requiring FCU rotational flaps for coverage of the posterior elbow showed that all flaps survived and provided adequate coverage for the defect.
CONCLUSIONS: The FCU rotational pedicle flap provides predictable coverage of small to medium-sized defects about the posterior elbow. Although it is relatively consistent, the proximal vascular pedicle does demonstrate some variability, which should be considered in planning surgery. The consistent distal extent of the FCU muscle belly provides wider proximal coverage of defects.
METHODS: Twenty-five cadaveric specimens were dissected. Pedicle location, number, and distance from the medial epicondyle were recorded along with the extent of posterior elbow coverage. Chart review was conducted during a 4-year period. Eight patients who underwent FCU rotational flap coverage were identified. Those flaps relied entirely on a single proximal pedicle.
RESULTS: The vascular pedicles from the ulnar artery or recurrent ulnar artery were identified in 24 of 25 specimens. The average distance from the tip of the medial epicondyle to the first pedicle was 5.7 cm (range, 3 to 10 cm). The length of muscle coverage proximal to the olecranon tip averaged 9.3 cm. The clinical follow-up of 7 patients requiring FCU rotational flaps for coverage of the posterior elbow showed that all flaps survived and provided adequate coverage for the defect.
CONCLUSIONS: The FCU rotational pedicle flap provides predictable coverage of small to medium-sized defects about the posterior elbow. Although it is relatively consistent, the proximal vascular pedicle does demonstrate some variability, which should be considered in planning surgery. The consistent distal extent of the FCU muscle belly provides wider proximal coverage of defects.