From HPO
Pes planus- MedGen UID:
- 42034
- •Concept ID:
- C0016202
- •
- Anatomical Abnormality
A foot where the longitudinal arch of the foot is in contact with the ground or floor when the individual is standing; or, in a patient lying supine, a foot where the arch is in contact with the surface of a flat board pressed against the sole of the foot by the examiner with a pressure similar to that expected from weight bearing; or, the height of the arch is reduced.
Shoulder girdle muscle weakness- MedGen UID:
- 96533
- •Concept ID:
- C0427063
- •
- Finding
The shoulder, or pectoral, girdle is composed of the clavicles and the scapulae. Shoulder-girdle weakness refers to lack of strength of the muscles attaching to these bones, that is, lack of strength of the muscles around the shoulders.
Genu recurvatum- MedGen UID:
- 107486
- •Concept ID:
- C0546964
- •
- Anatomical Abnormality
An abnormally increased extension of the knee joint, so that the knee can bend backwards.
Limb muscle weakness- MedGen UID:
- 107956
- •Concept ID:
- C0587246
- •
- Finding
Reduced strength and weakness of the muscles of the arms and legs.
Upper limb muscle weakness- MedGen UID:
- 305607
- •Concept ID:
- C1698196
- •
- Finding
Weakness of the muscles of the arms.
Lower limb muscle weakness- MedGen UID:
- 324478
- •Concept ID:
- C1836296
- •
- Finding
Weakness of the muscles of the legs.
Knee contracture- MedGen UID:
- 332406
- •Concept ID:
- C1837263
- •
- Anatomical Abnormality
Lack of full passive range of motion (restrictions in flexion, extension, or other movements) of the knee joint resulting from structural changes of non-bony tissues, such as muscles, tendons, ligaments, joint capsules and/or skin.
Muscle fibrillation- MedGen UID:
- 65418
- •Concept ID:
- C0231531
- •
- Finding
Fine, rapid twitching of individual muscle fibers with little or no movement of the muscle as a whole as ascertained by electromyography (EMG). If a motor neuron or its axon is destroyed, the muscle fibers it innervates undergo denervation atrophy. This leads to hypersensitivity of individual muscle fibers to acetyl choline so that they may contract spontaneously. Isolated activity of individual muscle fibers is generally so fine it cannot be seen through the intact skin, although it can be recorded as a short-duration spike in the EMG.
Waddling gait- MedGen UID:
- 66667
- •Concept ID:
- C0231712
- •
- Finding
Weakness of the hip girdle and upper thigh muscles, for instance in myopathies, leads to an instability of the pelvis on standing and walking. If the muscles extending the hip joint are affected, the posture in that joint becomes flexed and lumbar lordosis increases. The patients usually have difficulties standing up from a sitting position. Due to weakness in the gluteus medius muscle, the hip on the side of the swinging leg drops with each step (referred to as Trendelenburg sign). The gait appears waddling. The patients frequently attempt to counteract the dropping of the hip on the swinging side by bending the trunk towards the side which is in the stance phase (in the German language literature this is referred to as Duchenne sign). Similar gait patterns can be caused by orthopedic conditions when the origin and the insertion site of the gluteus medius muscle are closer to each other than normal, for instance due to a posttraumatic elevation of the trochanter or pseudarthrosis of the femoral neck.
Areflexia- MedGen UID:
- 115943
- •Concept ID:
- C0234146
- •
- Finding
Absence of neurologic reflexes such as the knee-jerk reaction.
Delayed ability to walk- MedGen UID:
- 66034
- •Concept ID:
- C0241726
- •
- Finding
A failure to achieve the ability to walk at an appropriate developmental stage. Most children learn to walk in a series of stages, and learn to walk short distances independently between 12 and 15 months.
Gait disturbance- MedGen UID:
- 107895
- •Concept ID:
- C0575081
- •
- Finding
The term gait disturbance can refer to any disruption of the ability to walk.
Delayed gross motor development- MedGen UID:
- 332508
- •Concept ID:
- C1837658
- •
- Finding
A type of motor delay characterized by a delay in acquiring the ability to control the large muscles of the body for walking, running, sitting, and crawling.
Motor delay- MedGen UID:
- 381392
- •Concept ID:
- C1854301
- •
- Finding
A type of Developmental delay characterized by a delay in acquiring motor skills.
Abnormally low-pitched voice- MedGen UID:
- 869488
- •Concept ID:
- C4023915
- •
- Finding
A persistent (minutes to hours) abnormal decrease in the pitch of the voice for the context or social situation or significantly different from the baseline of the individual.
Hypotonia- MedGen UID:
- 10133
- •Concept ID:
- C0026827
- •
- Finding
Hypotonia is an abnormally low muscle tone (the amount of tension or resistance to movement in a muscle). Even when relaxed, muscles have a continuous and passive partial contraction which provides some resistance to passive stretching. Hypotonia thus manifests as diminished resistance to passive stretching. Hypotonia is not the same as muscle weakness, although the two conditions can co-exist.
Muscle weakness- MedGen UID:
- 57735
- •Concept ID:
- C0151786
- •
- Finding
Reduced strength of muscles.
Gowers sign- MedGen UID:
- 65865
- •Concept ID:
- C0234182
- •
- Finding
A phenomenon whereby patients are not able to stand up without the use of the hands owing to weakness of the proximal muscles of the lower limbs.
Neck muscle weakness- MedGen UID:
- 66808
- •Concept ID:
- C0240479
- •
- Finding
Decreased strength of the neck musculature.
Weakness of facial musculature- MedGen UID:
- 98103
- •Concept ID:
- C0427055
- •
- Disease or Syndrome
Reduced strength of one or more muscles innervated by the facial nerve (the seventh cranial nerve).
Kyphoscoliosis- MedGen UID:
- 154361
- •Concept ID:
- C0575158
- •
- Anatomical Abnormality
An abnormal curvature of the spine in both a coronal (lateral) and sagittal (back-to-front) plane.
Frequent falls- MedGen UID:
- 163408
- •Concept ID:
- C0850703
- •
- Finding
Lumbar hyperlordosis- MedGen UID:
- 263149
- •Concept ID:
- C1184923
- •
- Finding
An abnormal accentuation of the inward curvature of the spine in the lumbar region.
Centrally nucleated skeletal muscle fibers- MedGen UID:
- 330782
- •Concept ID:
- C1842170
- •
- Finding
An abnormality in which the nuclei of sarcomeres take on an abnormally central localization (or in which this feature is found in an increased proportion of muscle cells).
Increased variability in muscle fiber diameter- MedGen UID:
- 336019
- •Concept ID:
- C1843700
- •
- Finding
An abnormally high degree of muscle fiber size variation. This phenotypic feature can be observed upon muscle biopsy.
Congenital multicore myopathy with external ophthalmoplegia- MedGen UID:
- 340597
- •Concept ID:
- C1850674
- •
- Disease or Syndrome
Congenital myopathy-1B (CMYO1B) is an autosomal recessive disorder of skeletal muscle characterized by severe hypotonia and generalized muscle weakness apparent soon after birth or in early childhood with delayed motor development, generalized muscle weakness and atrophy, and difficulty walking or running. Affected individuals show proximal muscle weakness with axial and shoulder girdle involvement, external ophthalmoplegia, and bulbar weakness, often resulting in feeding difficulties and respiratory insufficiency. Orthopedic complications such as joint laxity, distal contractures, hip dislocation, cleft palate, and scoliosis are commonly observed. Serum creatine kinase is normal. The phenotype is variable in severity (Jungbluth et al., 2005; Bharucha-Goebel et al., 2013). Some patients show symptoms in utero, including reduced fetal movements, polyhydramnios, and intrauterine growth restriction. The most severely affected patients present in utero with fetal akinesia, arthrogryposis, and lung hypoplasia resulting in fetal or perinatal death (McKie et al., 2014). Skeletal muscle biopsy of patients with recessive RYR1 mutations can show variable features, including multiminicores (Ferreiro and Fardeau, 2002), central cores (Jungbluth et al., 2002), congenital fiber-type disproportion (CFTD) (Monnier et al., 2009), and centronuclear myopathy (Wilmshurst et al., 2010).
For a discussion of genetic heterogeneity of congenital myopathy, see CMYO1A (117000).
Type 1 muscle fiber predominance- MedGen UID:
- 344274
- •Concept ID:
- C1854387
- •
- Finding
An abnormal predominance of type I muscle fibers (in general, this feature can only be observed on muscle biopsy).
Z-band streaming- MedGen UID:
- 480908
- •Concept ID:
- C3279278
- •
- Finding
Streaming or smearing of the Z band, which is then no longer confined to a narrow zone which bisects the I band. The Z disk may extend across the I band or the entire sarcomere in a zigzag manner. Focal thickening, smudging, and blurring of the Z band takes place concurrently. Myofibrillar disorganization is a frequent but not invariable accompanying change.
Nemaline bodies- MedGen UID:
- 814369
- •Concept ID:
- C3808039
- •
- Finding
Nemaline rods are abnormal bodies that can occur in skeletal muscle fibers. The rods can be observed on histological analysis of muscle biopsy tissue or upon electron microscopy, where they appear either as extensions of sarcomeric Z-lines, in random array without obvious attachment to Z-lines (often in areas devoid of sarcomeres) or in large clusters localized at the sarcolemma or intermyofibrillar spaces.
Fatty replacement of skeletal muscle- MedGen UID:
- 866735
- •Concept ID:
- C4021082
- •
- Finding
Muscle fibers degeneration resulting in fatty replacement of skeletal muscle fibers
Increased endomysial connective tissue- MedGen UID:
- 867771
- •Concept ID:
- C4022161
- •
- Finding
An increased volume of the endomysium, which is a connective tissue sheath that surrounds each muscule fiber. Together, bundles of muscle fibers form a fasciculus, surrounded by another layer of connective tissue called the perimysium.
Respiratory insufficiency due to muscle weakness- MedGen UID:
- 812797
- •Concept ID:
- C3806467
- •
- Finding
Elevated circulating creatine kinase concentration- MedGen UID:
- 69128
- •Concept ID:
- C0241005
- •
- Finding
An elevation of the level of the enzyme creatine kinase (also known as creatine phosphokinase (CK; EC 2.7.3.2) in the blood. CK levels can be elevated in a number of clinical disorders such as myocardial infarction, rhabdomyolysis, and muscular dystrophy.
High palate- MedGen UID:
- 66814
- •Concept ID:
- C0240635
- •
- Congenital Abnormality
Height of the palate more than 2 SD above the mean (objective) or palatal height at the level of the first permanent molar more than twice the height of the teeth (subjective).
Breech presentation- MedGen UID:
- 654
- •Concept ID:
- C0006157
- •
- Pathologic Function
A position of the fetus at delivery in which the fetus enters the birth canal with the buttocks or feet first.
- Abnormality of head or neck
- Abnormality of limbs
- Abnormality of metabolism/homeostasis
- Abnormality of prenatal development or birth
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system
- Abnormality of the respiratory system