Takaya Ishii1,2, Tsuyoshi Hara3, Syusuke Kusano4, Kouki Miura5, Akira Kubo3, Jun Kosaka6,2. 1. Division of Rehabilitation, International University of Health and Welfare Mita Hospital. 2. Department of Basic Medical Science, Graduate School of Medicine, International University of Health and Welfare. 3. Department of Physical Therapy, Faculty of Health Science International University of Health and Welfare. 4. Department of Rehabilitation, International University of Health and Welfare Mita Hospital. 5. Head and Neck Oncology Center, International University of Health and Welfare Mita Hospital. 6. Division of Anatomy Department of Medicine, School of Medicine, International University of Health and Welfare.
Abstract
OBJECTIVE: To evaluate the association between the cross-sectional area of selected shoulder and scapular muscles and the range of shoulder abduction, early after neck dissection surgery. PATIENTS AND METHODS: Twenty-seven patients (contributing 34 upper limbs), who had undergone neck dissection surgery for head and neck malignancy, were enrolled into the study. Loss of strength of the trapezius muscle at 1-month post-surgery was quantified by the change in active range of shoulder abduction (%A-ROM), measured by hand-held goniometry in a standing position, from baseline, before surgery. The cross-sectional area of the following muscles were measured on unenhanced computed tomography images after surgery: trapezius, rhomboid, serratus anterior, pectoralis major, deltoid, and biceps brachii. RESULTS: There was a significant positive correlation between the %A-ROM and the cross-sectional area of the rhomboid muscle. CONCLUSION: Greater active shoulder abduction early after surgery is associated with a greater cross-sectional area of the rhomboid muscle. This muscle should be included in intensive programs for rehabilitation of upper limb movement after neck dissection surgery.
OBJECTIVE: To evaluate the association between the cross-sectional area of selected shoulder and scapular muscles and the range of shoulder abduction, early after neck dissection surgery. PATIENTS AND METHODS: Twenty-seven patients (contributing 34 upper limbs), who had undergone neck dissection surgery for head and neck malignancy, were enrolled into the study. Loss of strength of the trapezius muscle at 1-month post-surgery was quantified by the change in active range of shoulder abduction (%A-ROM), measured by hand-held goniometry in a standing position, from baseline, before surgery. The cross-sectional area of the following muscles were measured on unenhanced computed tomography images after surgery: trapezius, rhomboid, serratus anterior, pectoralis major, deltoid, and biceps brachii. RESULTS: There was a significant positive correlation between the %A-ROM and the cross-sectional area of the rhomboid muscle. CONCLUSION: Greater active shoulder abduction early after surgery is associated with a greater cross-sectional area of the rhomboid muscle. This muscle should be included in intensive programs for rehabilitation of upper limb movement after neck dissection surgery.
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