From HPO
Clubfoot- MedGen UID:
- 3130
- •Concept ID:
- C0009081
- •
- Congenital Abnormality
Clubfoot is a congenital limb deformity defined as fixation of the foot in cavus, adductus, varus, and equinus (i.e., inclined inwards, axially rotated outwards, and pointing downwards) with concomitant soft tissue abnormalities (Cardy et al., 2007). Clubfoot may occur in isolation or as part of a syndrome (e.g., diastrophic dysplasia, 222600). Clubfoot has been reported with deficiency of long bones and mirror-image polydactyly (Gurnett et al., 2008; Klopocki et al., 2012).
Limb muscle weakness- MedGen UID:
- 107956
- •Concept ID:
- C0587246
- •
- Finding
Reduced strength and weakness of the muscles of the arms and legs.
Pes cavus- MedGen UID:
- 675590
- •Concept ID:
- C0728829
- •
- Congenital Abnormality
An increase in height of the medial longitudinal arch of the foot that does not flatten on weight bearing (i.e., a distinctly hollow form of the sole of the foot when it is bearing weight).
Hammertoe- MedGen UID:
- 209712
- •Concept ID:
- C1136179
- •
- Anatomical Abnormality
Hyperextension of the metatarsal-phalangeal joint with hyperflexion of the proximal interphalangeal (PIP) joint.
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.
Foot dorsiflexor weakness- MedGen UID:
- 356163
- •Concept ID:
- C1866141
- •
- Finding
Weakness of the muscles responsible for dorsiflexion of the foot, that is, of the movement of the toes towards the shin. The foot dorsiflexors include the tibialis anterior, the extensor hallucis longus, the extensor digitorum longus, and the peroneus tertius muscles.
Ulnar claw- MedGen UID:
- 871311
- •Concept ID:
- C4025799
- •
- Congenital Abnormality
An abnormal hand position characterized by hyperextension of the fourth and fifth fingers at the metacarpophalangeal joints and flexion of the interphalangeal joints of the same fingers such that they are curled towards the palm.
Peripheral neuropathy- MedGen UID:
- 18386
- •Concept ID:
- C0031117
- •
- Disease or Syndrome
Peripheral neuropathy is a general term for any disorder of the peripheral nervous system. The main clinical features used to classify peripheral neuropathy are distribution, type (mainly demyelinating versus mainly axonal), duration, and course.
Areflexia- MedGen UID:
- 115943
- •Concept ID:
- C0234146
- •
- Finding
Absence of neurologic reflexes such as the knee-jerk reaction.
Steppage gait- MedGen UID:
- 98105
- •Concept ID:
- C0427149
- •
- Finding
An abnormal gait pattern that arises from weakness of the pretibial and peroneal muscles due to a lower motor neuron lesion. Affected patients have footdrop and are unable to dorsiflex and evert the foot. The leg is lifted high on walking so that the toes clear the ground, and there may be a slapping noise when the foot strikes the ground again.
Hyporeflexia- MedGen UID:
- 195967
- •Concept ID:
- C0700078
- •
- Finding
Reduction of neurologic reflexes such as the knee-jerk reaction.
Peripheral demyelination- MedGen UID:
- 451074
- •Concept ID:
- C0878575
- •
- Pathologic Function
A loss of myelin from the internode regions along myelinated nerve fibers of the peripheral nervous system.
Distal sensory impairment- MedGen UID:
- 335722
- •Concept ID:
- C1847584
- •
- Finding
An abnormal reduction in sensation in the distal portions of the extremities.
Onion bulb formation- MedGen UID:
- 376237
- •Concept ID:
- C1847906
- •
- Finding
Repeated episodes of segmental demyelination and remyelination lead to the accumulation of supernumerary Schwann cells around axons, which is referred to as onion bulb formation. This finding affects peripheral nerves.
Decreased number of large peripheral myelinated nerve fibers- MedGen UID:
- 395303
- •Concept ID:
- C1859606
- •
- Finding
A reduced number of large myelinated nerve fibers.
Scoliosis- MedGen UID:
- 11348
- •Concept ID:
- C0036439
- •
- Disease or Syndrome
The presence of an abnormal lateral curvature of the spine.
Distal amyotrophy- MedGen UID:
- 338530
- •Concept ID:
- C1848736
- •
- Disease or Syndrome
Muscular atrophy affecting muscles in the distal portions of the extremities.
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).
Fiber type grouping- MedGen UID:
- 478824
- •Concept ID:
- C3277194
- •
- Finding
An abnormal distribution of muscle fiber types in muscle tissue. Human skeletal muscle contains at least two fiber types recognizable by histochemical techniques. In transverse sections of normal skeletal muscle, type 1 and type 2 fibers are distributed in a random fashion. Grouping of fibers of the same type can be seen in certain peripheral neuropathies, thought to be due to reinnervation of denervated muscle fibers by sprouting axons. With grouping, motor units enlarge. The fibers of a motor unit, which are normally scattered, come to lie adjacent to one another. Histochemical examination shows groups of muscle fibers of the same histochemical type.
EMG: neuropathic changes- MedGen UID:
- 867363
- •Concept ID:
- C4021727
- •
- Finding
The presence of characteristic findings of denervation on electromyography (fibrillations, positive sharp waves, and giant motor unit potentials).
Angulated muscle fibers- MedGen UID:
- 1699728
- •Concept ID:
- C5233187
- •
- Finding
Normal muscle fibers are polygonal-shaped in cross section, are multinucleated, and have minimal amounts of endomysial connective tissue. In contrast, angulated (also known as angular) muscle fibers have long and narrow vertices (corners) with sharp edges and a pointed tip.
- Abnormality of limbs
- Abnormality of the musculoskeletal system
- Abnormality of the nervous system