Table 2.
Table 2a. Frequency, severity, and asymmetry of upper extremity/shoulder girdle muscle involvement observed on T1-weighted WBMRI of 13 individuals with FSHD.
| Muscle | Number scored | Percentage affected | Mean fat infiltration score | Percent asymmetric |
|---|---|---|---|---|
| Pectoralis Major | 26 | 53.8% | 1.92 | 15.4% |
| Teres Major | 26 | 50.0% | 1.96 | 23.1% |
| Triceps, Long head | 12 | 33.3% | 1.25 | 16.7% |
| Biceps, Short head | 18 | 33.3% | 1.33 | 11.1% |
| Pectoralis Minor | 26 | 30.8% | 1.23 | 15.4% |
| Biceps, Long head | 20 | 30.0% | 1.20 | 10.0% |
| Deltoid Middle | 20 | 20.0% | 0.40 | 0.0% |
| Brachialis | 10 | 20.0% | 0.60 | 20.0% |
| Deltoid Posterior | 18 | 16.7% | 0.56 | 11.1% |
| Deltoid, Anterior | 20 | 10.0% | 0.35 | 10.0% |
| Coracobrachialis | 24 | 8.3% | 0.17 | 0.0% |
| Supraspinatus | 10 | 0.0% | 0.00 | 0.0% |
| Infraspinatus | 26 | 0.0% | 0.08 | 0.0% |
| Subscapularis | 26 | 0.0% | 0.08 | 0.0% |
| Teres Minor | 26 | 0.0% | 0.04 | 7.7% |
| Table 2b. Frequency, severity, and asymmetry of lower extremity/hip girdle muscle involvement observed on T1-weighted WBMRI of 13 individuals with FSHD. | ||||
|---|---|---|---|---|
| Muscle | Number scored | Percentage affected | Mean fat infiltration score | Percent asymmetric |
| Semimembranosus | 26 | 92.3% | 4.04 | 38.5% |
| Adductor longus | 26 | 73.1% | 2.96 | 46.2% |
| Gluteus Minimus | 26 | 69.2% | 2.42 | 7.7% |
| Tensor fascia lata | 26 | 65.4% | 2.31 | 23.1% |
| Biceps femoris, long head | 26 | 61.5% | 2.08 | 38.5% |
| Biceps femoris, short head | 26 | 61.5% | 2.62 | 38.5% |
| Semitendinosis | 26 | 57.7% | 2.00 | 53.8% |
| Gluteus Medius | 26 | 53.8% | 1.77 | 15.4% |
| Rectus femoris | 26 | 53.8% | 2.23 | 61.5% |
| Vastus medialis | 26 | 50.0% | 1.54 | 38.5% |
| Gracilis | 26 | 50.0% | 1.58 | 23.1% |
| Adductor magnus | 26 | 50.0% | 1.85 | 30.8% |
| Extensor digitorum longus | 10 | 50.0% | 2.00 | 60.0% |
| Adductor brevis | 26 | 46.2% | 1.77 | 46.2% |
| Sartorius | 26 | 38.5% | 1.23 | 30.8% |
| Tibialis anterior | 22 | 36.4% | 1.45 | 45.5% |
| Medial gastrocnemius | 22 | 27.3% | 1.23 | 18.2% |
| Peroneus longus | 8 | 25.0% | 1.38 | 25.0% |
| Piriformis | 26 | 23.1% | 0.85 | 38.5% |
| Vastus intermedius | 26 | 23.1% | 0.92 | 23.1% |
| Vastus lateralis | 26 | 19.2% | 0.77 | 15.4% |
| Gluteus Maximus | 26 | 15.4% | 0.81 | 7.7% |
| Lateral gastrocnemius | 22 | 13.6% | 0.82 | 9.1% |
| Iliopsoas | 26 | 7.7% | 0.35 | 15.4% |
| Pectineus | 26 | 7.7% | 0.27 | 15.4% |
| Psoas major | 26 | 3.8% | 0.27 | 15.4% |
| Quadratus femoris | 26 | 3.8% | 0.27 | 7.7% |
| Iliacus | 26 | 0.0% | 0.00 | 0.0% |
| Obturator internus | 26 | 0.0% | 0.04 | 7.7% |
| Obturator externus | 26 | 0.0% | 0.04 | 7.7% |
| Tibialis posterior | 10 | 0.0% | 0.40 | 0.0% |
| Popliteus | 14 | 0.0% | 0.29 | 0.0% |
| Soleus | 6 | 0.0% | 0.33 | 0.0% |
| Table 2c. Frequency, severity, and asymmetry of axial muscle involvement observed on T1-weighted WBMRI of 13 individuals with FSHD. | ||||
|---|---|---|---|---|
| Muscle | Number scored | Percentage affected | Mean fat infiltration score | Percent asymmetric |
| Lower rectus abdominus | 22 | 81.8% | 3.64 | 0.0% |
| Lumbar medial erector spinae | 26 | 80.8% | 2.38 | 7.7% |
| Latissimus dorsi | 24 | 79.2% | 3.08 | 16.7% |
| Serratus anterior | 24 | 79.2% | 3.04 | 33.3% |
| Lumbar lateral erector spinae | 26 | 73.1% | 2.46 | 7.7% |
| Upper rectus abdominus | 22 | 72.7% | 2.82 | 9.1% |
| Thoracic medial erector spinae | 26 | 69.2% | 2.08 | 0.0% |
| Thoracic lateral erector spinae | 26 | 69.2% | 2.54 | 7.7% |
| Trapezius | 16 | 50.0% | 2.38 | 0.0% |
| Rhomboid | 20 | 40.0% | 1.80 | 20.0% |
| Quadratus lumborum | 26 | 30.8% | 1.23 | 0.0% |