Year: 2024 | Month: November | Volume: 14 | Issue: 11 | Pages: 159-165
DOI: https://doi.org/10.52403/ijhsr.20241116
Innovative Modified Passive Functional Shoulder Prosthesis Incorporating a Double-Axis Hinge Shoulder Joint with Servo Motor for Shoulder Disarticulation Patient
Ankit Kumar Ray1, Yashika Kumar2
1Intern, Indian Spinal Injury Centre- Institute of Rehabilitation Sciences, Vasant Kunj, New Delhi, India.
2Assistant professor (P&O), Indian Spinal Injury Centre- Institute of Rehabilitation Sciences, Vasant Kunj, New Delhi, India
Corresponding Author: Ankit Kumar Ray
ABSTRACT
BACKGROUND: Amputation is the removal of a body extremity due to the result of any trauma, medical illness, tumor or surgery. Trauma is the leading cause of amputation in upper limb, accounting for 80% of acquired amputations. The levels of amputation in upper limb are trans-phalangeal, trans-metacarpal, trans-carpal, wrist disarticulation, trans-radial, elbow disarticulation, trans-humeral, shoulder disarticulation, and forequarter amputation. Passive prosthesis is usually prescribed as the involvement of joints is more in amputation and the level of amputation is higher. A passive functional prosthesis can be socially beneficial because it can assist in promoting a psychological acceptance of the amputee’s impaired image. The passive functional prosthesis does provide articulation and need sound limb to achieve desired position.
Aim: This study aimed to design and develop modified passive functional shoulder prosthesis incorporating a double-axis hinge shoulder joint with servo motor for enhanced mobility and psychological satisfaction in shoulder disarticulation patient.
Method: In this study a patient is taken with the amputation level through the shoulder to which passive functional shoulder prosthesis is prescribed. After this a modified passive functional shoulder prosthesis incorporating a double-axis hinge shoulder joint and servo motor was designed and fabricated for the patients of shoulder disarticulation and pretest data was taken using Quebec User Evaluation of Satisfaction with Assistive Technology (QUEST 2.0) and then prosthesis is given to the patients and after this post test data was taken and data analysis was done.
Result: The modified passive functional shoulder prosthesis incorporating a double-axis hinge shoulder joint and servo motor has improved the function and psychological satisfaction of the patient with shoulder disarticulation the pre-test data was 3.7 and the post-test value comes 8.6.
Discussion and conclusion: This study showed improved result in the function and psychological satisfaction of the patient with shoulder disarticulation as the passive functional shoulder prosthesis includes the double axis hinge shoulder joint with servo motor is developed which provide two degree of freedom of movement i.e., the flexion and extension motion in sagittal plane using the servo motor which drive the power from the 12V Li-ion battery. In this study, we evaluated the satisfaction of a patient with modified passive function shoulder prosthesis incorporating a double-axis hinge shoulder joint and servo motor and concluded that it provide the function and psychological satisfaction to the patient with shoulder disarticulation.
Key words: Amputation, level of amputation, Shoulder disarticulation, Artificial Limb, Passive Prosthesis.