Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography Study
Objective To determine the location of the motor endplate zones (MoEPs) for the three heads of the triceps brachii muscles during cadaveric dissection and estimate the safe injection zone using ultrasonography. Methods We studied 12 upper limbs of 6 fresh cadavers obtained from body donations to the...
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| Format: | Article |
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Korean Academy of Rehabilitation Medicine
2019-12-01
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| Series: | Annals of Rehabilitation Medicine |
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| Online Access: | http://www.e-arm.org/upload/pdf/arm-2019-43-6-635.pdf |
| _version_ | 1797762220589842432 |
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| author | Hyun Jung Koo Hye Jung Park Geun-Young Park Yeonjae Han Donggyun Sohn Sun Im |
| author_facet | Hyun Jung Koo Hye Jung Park Geun-Young Park Yeonjae Han Donggyun Sohn Sun Im |
| author_sort | Hyun Jung Koo |
| collection | DOAJ |
| description | Objective To determine the location of the motor endplate zones (MoEPs) for the three heads of the triceps brachii muscles during cadaveric dissection and estimate the safe injection zone using ultrasonography. Methods We studied 12 upper limbs of 6 fresh cadavers obtained from body donations to the medical school anatomy institution in Seoul, Korea. The locations of MoEPs were expressed as the percentage ratio of the vertical distance from the posterior acromion angle to the midpoint of the olecranon process. By using the same reference line as that used for cadaveric dissection, the safe injection zone away from the neurovascular bundle was identified in 6 healthy volunteers via ultrasonography. We identified the neurovascular bundle and its location with respect to the distal end of the humerus and measured its depth from the skin surface. Results The MoEPs for the long, lateral, and medial heads were located at a median of 43.8%, 54.8%, and 60.4% of the length of the reference line in cadaver dissection. The safe injection zone of the medial head MoEPs corresponded to a depth of approximately 3.5 cm from the skin surface and 1.4 cm away from the humerus, as determined by sonography. Conclusion Correct identification of the motor points for each head of the triceps brachii would increase the precision and efficacy of motor point injections to manage elbow extensor spasticity. |
| first_indexed | 2024-03-12T19:25:09Z |
| format | Article |
| id | doaj.art-cf5f7410192f4b52940725b95d4516ce |
| institution | Directory Open Access Journal |
| issn | 2234-0645 2234-0653 |
| language | English |
| last_indexed | 2024-03-12T19:25:09Z |
| publishDate | 2019-12-01 |
| publisher | Korean Academy of Rehabilitation Medicine |
| record_format | Article |
| series | Annals of Rehabilitation Medicine |
| spelling | doaj.art-cf5f7410192f4b52940725b95d4516ce2023-08-02T04:56:26ZengKorean Academy of Rehabilitation MedicineAnnals of Rehabilitation Medicine2234-06452234-06532019-12-0143663564110.5535/arm.2019.43.6.6354126Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography StudyHyun Jung Koo0Hye Jung Park1Geun-Young Park2Yeonjae Han3Donggyun Sohn4Sun Im5 Department of Rehabilitation Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea Department of Rehabilitation Medicine, National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea Department of Rehabilitation Medicine, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea Department of Rehabilitation Medicine, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea Department of Rehabilitation Medicine, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea Department of Rehabilitation Medicine, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, KoreaObjective To determine the location of the motor endplate zones (MoEPs) for the three heads of the triceps brachii muscles during cadaveric dissection and estimate the safe injection zone using ultrasonography. Methods We studied 12 upper limbs of 6 fresh cadavers obtained from body donations to the medical school anatomy institution in Seoul, Korea. The locations of MoEPs were expressed as the percentage ratio of the vertical distance from the posterior acromion angle to the midpoint of the olecranon process. By using the same reference line as that used for cadaveric dissection, the safe injection zone away from the neurovascular bundle was identified in 6 healthy volunteers via ultrasonography. We identified the neurovascular bundle and its location with respect to the distal end of the humerus and measured its depth from the skin surface. Results The MoEPs for the long, lateral, and medial heads were located at a median of 43.8%, 54.8%, and 60.4% of the length of the reference line in cadaver dissection. The safe injection zone of the medial head MoEPs corresponded to a depth of approximately 3.5 cm from the skin surface and 1.4 cm away from the humerus, as determined by sonography. Conclusion Correct identification of the motor points for each head of the triceps brachii would increase the precision and efficacy of motor point injections to manage elbow extensor spasticity.http://www.e-arm.org/upload/pdf/arm-2019-43-6-635.pdfcadaverultrasonographymuscle spasticitybotulinum toxins |
| spellingShingle | Hyun Jung Koo Hye Jung Park Geun-Young Park Yeonjae Han Donggyun Sohn Sun Im Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography Study Annals of Rehabilitation Medicine cadaver ultrasonography muscle spasticity botulinum toxins |
| title | Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography Study |
| title_full | Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography Study |
| title_fullStr | Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography Study |
| title_full_unstemmed | Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography Study |
| title_short | Safe Needle Insertion Locations for Motor Point Injection of the Triceps Brachii Muscle: A Pilot Cadaveric and Ultrasonography Study |
| title_sort | safe needle insertion locations for motor point injection of the triceps brachii muscle a pilot cadaveric and ultrasonography study |
| topic | cadaver ultrasonography muscle spasticity botulinum toxins |
| url | http://www.e-arm.org/upload/pdf/arm-2019-43-6-635.pdf |
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