Giorgio Ippolito1, Mariano Serrao2,3, Francesco Napoli1, Carmela Conte4, Massimo Miscusi1, Gianluca Coppola5, Francesco Pierelli1,6, Giuseppe Costanzo1, Vincenzo De Cupis7. 1. Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 40100, Latina, Italy. 2. Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 40100, Latina, Italy. mariano.serrao@uniroma1.it. 3. Movement Analysis LAB, Rehabilitation Centre Policlinico Italia, Piazza del Campidano 6, 00162, Rome, Italy. mariano.serrao@uniroma1.it. 4. Don Gnocchi Foundation, Milan, Italy. 5. Department of Neurophysiology of Vision and Neurophthalmology, G.B. Bietti Foundation-IRCCS, Via Livenza 3, 00198, Rome, Italy. 6. IRCCS Neuromed, Pozzilli, IS, Italy. 7. Traumatic Orthopedic Surgical Institute, ICOT, Latina, Italy.
Abstract
INTRODUCTION: Latissimus dorsi tendon transfer (LDT) is a recent method for surgical treatment of massive, irreparable posterosuperior cuff tears (MIPCT). So far, there are no studies on the quantitative motion analysis of the shoulder and latissimus dorsi (LD) muscle activation after LDT. The changes in shoulder movements after LDT can be objectively assessed by the 3-D motion analysis. These changes may not be due to an increased activity of the LD muscle as external rotator. MATERIALS AND METHODS: The shoulder kinematics of nine patients with MIPCT were recorded through a 3-D motion analysis system, before LTD (T0), and after 3 (T1) and 6 (T2) months post-LDT. Maximal shoulder flexion-extension, abduction-adduction, and horizontal abduction-adduction, and the internal and external circumduction of the shoulder joint were measured during upright standing posture. Surface EMG activity of the LD muscle was recorded during both internal rotation (IR) and external rotation (ER) tasks in three different postures. RESULTS: A significant increase of shoulder movements was observed at T2 compared with T0 for almost all motor tasks. A significant effect of LDT was also found on LD-IR/ER ratio in posture 1 at T2 compared with T0 and T1. No significant effects were found for the LD-IR/ER ratio in the other postures. CONCLUSIONS: Our study indicates that LDT is effective in shoulder motion recovery. Such improvement is not associated with a change in function of the LD muscle, which may be induced by a depression of the humeral head into the glenoid cavity instead.
INTRODUCTION: Latissimus dorsi tendon transfer (LDT) is a recent method for surgical treatment of massive, irreparable posterosuperior cuff tears (MIPCT). So far, there are no studies on the quantitative motion analysis of the shoulder and latissimus dorsi (LD) muscle activation after LDT. The changes in shoulder movements after LDT can be objectively assessed by the 3-D motion analysis. These changes may not be due to an increased activity of the LD muscle as external rotator. MATERIALS AND METHODS: The shoulder kinematics of nine patients with MIPCT were recorded through a 3-D motion analysis system, before LTD (T0), and after 3 (T1) and 6 (T2) months post-LDT. Maximal shoulder flexion-extension, abduction-adduction, and horizontal abduction-adduction, and the internal and external circumduction of the shoulder joint were measured during upright standing posture. Surface EMG activity of the LD muscle was recorded during both internal rotation (IR) and external rotation (ER) tasks in three different postures. RESULTS: A significant increase of shoulder movements was observed at T2 compared with T0 for almost all motor tasks. A significant effect of LDT was also found on LD-IR/ER ratio in posture 1 at T2 compared with T0 and T1. No significant effects were found for the LD-IR/ER ratio in the other postures. CONCLUSIONS: Our study indicates that LDT is effective in shoulder motion recovery. Such improvement is not associated with a change in function of the LD muscle, which may be induced by a depression of the humeral head into the glenoid cavity instead.
Authors: Antonio Panella; Marco Baglioni; Francesco Rifino; Angelo De Crescenzo; Angela Notarnicola; Biagio Moretti Journal: SAGE Open Med Case Rep Date: 2020-05-06
Authors: Pit Hetto; David Spranz; Felix Zeifang; Sebastian I Wolf; Stefan van Drongelen; Michael W Maier; Boris Sowa Journal: J Clin Med Date: 2020-02-05 Impact factor: 4.241