scholarly journals Unusual bilateral muscular variation in the medial forearm: separate humeral and ulnar bellies of flexor carpi ulnaris and anomalous muscle addition

Author(s):  
Amanda M. Pugh
Hand Surgery ◽  
2013 ◽  
Vol 18 (03) ◽  
pp. 393-397 ◽  
Author(s):  
Praveen Bhardwaj ◽  
Laxminarayan Bhandari ◽  
S. Raja Sabapathy

Anomalies of Flexor carpi ulnaris (FCU) are uncommon and predominantly consist of abnormal insertion or extra tendinous bands. The presence of two separate bellies of FCU muscle with separate tendons has been termed as Digastric FCU. It is a very rare anomaly with only six previously reported cases and no report of clinical use of such anomalous muscle. We describe a case of anomalous FCU found incidentally in a patient operated for complex Post Volkmann's ischemic contracture deficits. On table each head of FCU was found to form separate belly and tendon. One tendon was used for the thumb opposition while the other for index finger flexion. Postoperatively, the patient had independent movement of thumb and index finger. This is the first reported case of clinical application of digastric FCU. We reviewed the literature for supernumerary FCU in general and digastric FCU in particular. We propose a new classification for supernumerary FCUs based on the clinical appearance and the probable embryological basis of the anomaly: Type 1 (Split tendons) — single muscle with two tendons; Type 2 (Digastric FCU) — for each head of FCU forming separate muscle bellies and tendons; and Type 3 (Accessory FCU) — abnormal muscle adjacent to normal FCU with combined features of FCU and Palmaris longus.


Author(s):  
Francisco J. Lucas ◽  
Vicente Carratalá ◽  
Ignacio Miranda ◽  
Cristobal Martinez-Andrade

Abstract Background Advances in wrist arthroscopy and the emergence of novel surgical techniques have created a need for new portals to the wrist. The aim of this study was to define and verify the safety of the volar distal radioulnar (VDRU) portal. Description of the Technique The VDRU portal is located ∼5 to 10 mm proximal to the proximal wrist crease, just on the ulnar edge of flexor carpi ulnaris tendon and radial to the dorsal cutaneous branch of the ulnar nerve. The ulnar styloid marks the distal point of the portal. Methods An anatomical study was performed on 12 upper extremity specimens of 6 human cadavers. Iatrogenic injuries of neurovascular structures potentially at risk were assessed, and the distance from the portal to these structures was measured. Results No iatrogenic injuries of the structures at risk occurred. Mean distances from the VDRU portal to the ulnar neurovascular bundle, the radial branch of the dorsal sensory branches of the ulnar nerve (DSBUN), and the ulnar branch of the DSBUN were 9.29 ± 0.26 mm, 8.08 ± 0.25 mm, and 10.58 ± 0.23 mm, respectively. There were no differences between left and right wrists. The distances from the VDRU portal to the ulnar neurovascular bundle and the ulnar branch of the DSBUN were significantly shorter in women; this distance was not less than 7 mm in any case. Conclusions The VDRU portal is safe, reproducible, and facilitates the implementation of various techniques related to triangular fibrocartilage complex pathology.


1988 ◽  
Vol 11 (5) ◽  
pp. 467-470 ◽  
Author(s):  
William W. Campbell ◽  
Rhonda M. Pridgeon ◽  
Singh K. Sahni

1984 ◽  
Vol 6 (4) ◽  
pp. 547-550 ◽  
Author(s):  
Luciano Daliento ◽  
Enrico Franceschini Grisolia ◽  
Carla Frescura ◽  
Gaetano Thiene

Circulation ◽  
1962 ◽  
Vol 25 (3) ◽  
pp. 443-455 ◽  
Author(s):  
RUSSELL V. LUCAS ◽  
RICHARD L. VARCO ◽  
C. WALTON LILLEHEI ◽  
PAUL ADAMS ◽  
RAY C. ANDERSON ◽  
...  

2013 ◽  
Vol 26 (05) ◽  
pp. 366-371 ◽  
Author(s):  
G. Loprete ◽  
V. Musella ◽  
D. Britti ◽  
J. M. Vilar ◽  
G. Spinella

SummaryThe aim of this study was to describe the cross-sectional area and mean echogenicity of the main tendons of the shoulder and elbow joints in adult German Shepherd dogs and to determine the effects of sex, weight, and age on these parameters. No previous publications in the veterinary literature have reported information regarding quantitative ultrasonographic tendon measurements in dogs.Thirty German Shepherd dogs were examined: 13 males and 17 females. The cross-sectional area was significantly higher in males than in females (p <0.05) for the distal tendon of the triceps brachii muscle and the tendons of the flexor carpi ulnaris and common digital extensor muscles. The influence of sex on mean echogenicity was not significant. According to age, mean echogenicity was higher in older dogs, while the cross-sectional areas were similar in the two groups. Cross-sectional area and mean echogenicity of the tendons showed a direct increase with an increase in body weight. The data gained from this study can help support the clinician to discriminate between normal and pathological conditions.


Sign in / Sign up

Export Citation Format

Share Document