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Comparison Between TH sockets designs Picture1, 1- Krajbich, J. I., MD,…
Comparison Between TH sockets designs
Utah Socket
Socket trimlines
Low trimeline on the lateral side, below acromion
extended wings anteriorly and posteriorly, lower than the clavicle and the scapula spine
ROM
allows more abduction
compressed ML allows comfortable full adduction
socket Dimensions
Compressed ML with medial wall parallel to LOP, stabilize lateral wall in abduction
Compressed AP provides stability in flexion and extension, plus rotational stability
socket shape
shows triangular shape
Rotational control
Compressed AP in the extended wings allows rotational control
Harnessing needs
Less and simple harnessing needed
Suspension
extended wings help to support the weight of the limb
simple harnessing
cosmetic appearence
Better cosmetic appearance
other characteristics
can be used with myoelectric controls and body powered
Improved musculoskeletal and volumetric control
conventional socket
Socket trimlines
lateral trimline is high and covers the shoulder, extendes above the acromion in short stumps and lies 1cm below the acromion in long stumps
anterior trimline include the deltopectoral triangle and the posterior trimline includes part of the scapula
socket shape
ROM
Allows less socket abduction, and a gap is created when abducted
medial wall is flattened to allow comfortable adduction
Socket Dimentions
No AP compression
Less anatomical and contour characteristics are followed
Rotational control
Less or No rotational control
needs a strap for rotational control
Harnessing needs
more harnessing straps, straps are added for rotational control
suspension
the extended superior trimline above the acromion in short stumps enhance the suspension
harnessing needed for suspension
Cosmetic appearance
Less cosmetic appearance with the shoulder cover
1- Krajbich, J. I., MD, Pinzur, M. S., MD, Potter, B. K., MD, & Cpo, P. M. S. M. (2018). Atlas of Amputations & Limb Deficiencies, 4th edition. Lippincott Williams & Wilkins.
2- Andrew, J. T. (2008). Transhumeral and elbow disarticulation anatomically contoured socket considerations. Jpo Journal of Prosthetics and Orthotics, 20(3), 107–117.
https://doi.org/10.1097/jpo.0b013e31817ded98
3- Fabrication procedures for the open-shoulder above-elbow socket. (n.d.). PubMed.
https://pubmed.ncbi.nlm.nih.gov/5380879/
4- Lake, C. (2008). The evolution of upper limb prosthetic socket design. Jpo Journal of Prosthetics and Orthotics, 20(3), 85–92.
https://doi.org/10.1097/jpo.0b013e31817d2f08
5- Human Study CATII Upper limb prosthetics- Biomechanics study notes
References
check the link to the online mindmap, to be able to view and enlarge the attached pictures
https://coggle.it/diagram/ZQ6U1NE4196ri-NT/t/comparison-between-th-sockets-designs-picture1/899a97fecb182b9fc7b71ceee66f2c11b1b6b231865dd29050b6a0418ee173f0
