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. 2023 Dec;26(6):716-724.
doi: 10.1007/s11102-023-01352-1. Epub 2023 Oct 30.

Assessment of forearm muscles with ultrasound shear wave elastography in patients with acromegaly

Meric Coskun  1 , Halit Nahit Sendur  2 , Mahi Nur Cerit  2 , Afruz Babayeva  3 , Ethem Turgay Cerit  3 , Mehmet Muhittin Yalcin  3 , Alev Eroglu Altinova  3 , Mujde Akturk  3 , Mehmet Ayhan Karakoc  3 , Fusun Balos Toruner  3
Affiliations

Assessment of forearm muscles with ultrasound shear wave elastography in patients with acromegaly

Meric Coskun et al. Pituitary. 2023 Dec.

Abstract

Purpose: The effects of acromegaly on soft tissues, bones and joints are well-documented, but information on its effects on muscle mass and quality remains limited. The primary goal of this study is to assess the sonoelastographic features of forearm muscles in patients with acromegaly.

Method: Forty-five patients with acromegaly and 45 healthy controls similar in terms of gender, age, and body mass index (BMI) were included in a single-center, multidisciplinary, cross-sectional study. The body composition was analyzed using bioelectrical impedance analysis (BIA), and height-adjusted appendicular skeletal muscle index (hSMI) was calculated. The dominant hand's grip strength was also measured. Two radiologists specialized in the musculoskeletal system employed ultrasound shear wave elastography (SWE) to assess the thickness and stiffness of brachioradialis and biceps brachii muscles.

Results: The acromegaly group had significantly higher thickness of both the biceps brachii (p = 0.034) and brachioradialis muscle (p = 0.046) than the control group. However, the stiffness of the biceps brachii (p = 0.001) and brachioradialis muscle (p = 0.001) was lower in the acromegaly group than in the control group. Disease activity has not caused a significant difference in muscle thickness and stiffness in the acromegaly group (p > 0.05). The acromegaly group had a higher hSMI (p = 0.004) than the control group. The hand grip strength was similar between the acromegaly and control group (p = 0.594).

Conclusion: The patients with acromegaly have an increased muscle thickness but decreased muscle stiffness in the forearm muscles responsible for elbow flexion. Acromegaly can lead to a permanent deterioration of the muscular structure regardless of the disease activity.

Keywords: Acromegaly; Forearm muscle; Muscle stiffness; Muscle thickness; Ultrasound shear wave elastography.

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