Pg Blazer - Online Test Series 12 - Orthopaedics

1. Most common site of osteosarcoma is

Upper end of femur

Lower end of femur

Lower end of humerus

Lower end of tibia

Osteosarcoma is a type of bone cancer that most commonly occurs in the lower end of the femur. This area is particularly susceptible to osteosarcoma because it is a site of rapid bone growth during adolescence. The lower end of the femur is also a weight-bearing area, which may contribute to the development of this aggressive bone tumor. Osteosarcoma can also occur in other bones, but the lower end of the femur is the most common site.

Explanation

Osteosarcoma is a type of bone cancer that most commonly occurs in the lower end of the femur. This area is particularly susceptible to osteosarcoma because it is a site of rapid bone growth during adolescence. The lower end of the femur is also a weight-bearing area, which may contribute to the development of this aggressive bone tumor. Osteosarcoma can also occur in other bones, but the lower end of the femur is the most common site.

2. Meralgia paresthetica is due to involvement of

Medical cutaneous nerve of thigh

Lateral cutaneous nerve of thigh

Sural nerve

Femoral nerve

Meralgia paresthetica is characterised by pain, tingling and numbness in lateral aspect of thigh. There is no motor deficiency. It is due to involvement of lateral cutaneous nerve of thigh.

Explanation

Meralgia paresthetica is characterised by pain, tingling and numbness in lateral aspect of thigh. There is no motor deficiency. It is due to involvement of lateral cutaneous nerve of thigh.

3. Bohler's angle is decreased in fracture of

Calcaneum

Talus

Navicular

Cuboid

Bohler’s angle is formed at the junction of:
-line joining the posterosuperior part of the calcaneal tuberosity and the uppermost point on the posterior articular surface for talus
-line joining the uppermost point on the posterior articular surface for talus and the anterior process of the calcaneum

Normal value is 25-40°. It is decreased in fracture of calcaneum. (usually occurs in fall from height)

Explanation

Bohler’s angle is formed at the junction of:
-line joining the posterosuperior part of the calcaneal tuberosity and the uppermost point on the posterior articular surface for talus
-line joining the uppermost point on the posterior articular surface for talus and the anterior process of the calcaneum

Normal value is 25-40°. It is decreased in fracture of calcaneum. (usually occurs in fall from height)

4. About congenital torticollis all are true except :

Always associated with breech extraction

Spontaneous resolution in most cases

2/3rd cases have palpable neck mass at birth

Uncorrected cases develop plagiocephaly

Congenital torticollis is most commonly associated with breech extraction. But not always.

Explanation

Congenital torticollis is most commonly associated with breech extraction. But not always.

5. 60 yrs old male with bony abnormality at upper tibia associated with sensorineural hearing loss. On laboratory examination serum alkaline phosphatase levels are (440 mU/l) elevated and serum Ca and PO4 are normal. Skeletal survey shows ivory vertebrae and cotton wool spots in x-ray skull. Diagnosis is :

Fibrous dysplasia

Paget disease

Osteosclerotic metastasis

Osteoporosis

The age, clinical features and investigation findings are characteristic of Paget's disease.

Explanation

The age, clinical features and investigation findings are characteristic of Paget's disease.

6. In patients with osteoarthritis of knee joint, atrophy occurs most commonly in which muscle :

Quadriceps only

Hamstrings only

Quadriceps and hamstrings

Gastrocnemius

Quadriceps is the most commonly affected muscle is osteoarthritis of knee.

Explanation

Quadriceps is the most commonly affected muscle is osteoarthritis of knee.

7. Which is not a deep heat therapy

Short wave diathermy

Ultrasound therapy

Infrared therapy

Microwave therapy

Infrared therapy is a type of superficial heat therapy.

Explanation

Infrared therapy is a type of superficial heat therapy.

8. Rickets in infancy is characterised by the following except :

Craniotabes

Rachitic rosary

Wide open fontanelles

Bow legs

Bow legs appear only after the child starts walking - due to weight bearing effect.

Explanation

Bow legs appear only after the child starts walking - due to weight bearing effect.

9. Pigmented villouodular synovitis most commonly affects :

Shoulder

Ankle

Knee

Metatarsophalangeal joint

It is a benign condition characterised by exuberant proliferation of synovial tissue. It affects synovial joints, tendon sheaths and bursae.

Explanation

It is a benign condition characterised by exuberant proliferation of synovial tissue. It affects synovial joints, tendon sheaths and bursae.

10. Following are associated with CV junction anomalies except -

Basilar invagination

Odontoid dysgenesis

Ankylosing Spondylosis

None of the above

All of the above are associated with craniovertebral junction anomalies.

Explanation

All of the above are associated with craniovertebral junction anomalies.