Which of the following are signs of joint inflammation? Select All That Apply.

Assessment of hip stability in newborns is an essential component of early musculoskeletal screening to detect developmental dysplasia of the hip (DDH). Early identification is critical because untreated hip instability can lead to gait abnormalities, joint deformity, and long-term disability. Specific orthopedic maneuvers are used during infancy to assess whether the femoral head is dislocatable or reducible within the acetabulum. These tests are routinely performed until the infant begins walking, after which other signs become more apparent.

Rationale:
A. The Barlow test is used to assess whether the infant’s hip is dislocatable. It involves gently adducting the hip and applying posterior pressure to determine if the femoral head can be pushed out of the acetabulum. A positive Barlow test indicates hip instability and suggests developmental dysplasia of the hip requiring further evaluation and monitoring.

B. The Trendelenburg test assesses hip abductor muscle strength in older children and adults, not newborns. It evaluates pelvic stability during single-leg stance and is used in conditions such as hip dysplasia, muscular weakness, or nerve injury. It is not appropriate for detecting neonatal hip instability.

C. The Ortolani test is used to assess whether a dislocated hip can be reduced back into the acetabulum. It involves abducting the infant’s hips while applying gentle anterior pressure to feel or hear a “clunk” as the femoral head relocates. A positive Ortolani sign indicates a reducible dislocation consistent with developmental dysplasia of the hip.

D. The Leopold maneuver is an obstetric assessment technique used during pregnancy to determine fetal position, presentation, and lie within the uterus. It is not related to neonatal orthopedic examination or detection of hip instability. Therefore, it is not used in assessing developmental dysplasia of the hip.

Scrotal and inguinal masses in adolescents require careful physical examination to differentiate between infectious, congenital, and hernia-related causes. A mass that “comes and goes” and becomes more prominent with increased intra-abdominal pressure suggests a herniation of abdominal contents through the inguinal canal. The cough impulse test is a key diagnostic maneuver used to detect hernias. Findings such as a bulge felt against the examiner’s finger during coughing strongly indicate an indirect inguinal hernia.

Rationale:
A. Acute orchitis is an inflammatory condition of the testicle usually caused by viral or bacterial infection, commonly presenting with scrotal pain, swelling, tenderness, and sometimes fever. The affected testis is typically painful rather than nontender. It does not present as a reducible mass that changes with coughing or physical strain.

B. Indirect inguinal hernia occurs when abdominal contents protrude through the deep inguinal ring into the inguinal canal and potentially into the scrotum. It often presents as a soft, intermittent, nontender mass that increases with coughing or straining due to increased intra-abdominal pressure. The presence of a bulge felt against the examiner’s finger during coughing is a classic positive cough impulse test confirming herniation.

C. Acute epididymitis presents with scrotal pain, swelling, and tenderness, often associated with urinary symptoms or sexually transmitted infections in adolescents. The scrotum is usually erythematous and tender on palpation. It does not produce a reducible or intermittent mass that changes with coughing.

D. Hypospadias is a congenital abnormality of the urethral meatus where the opening is located on the ventral surface of the penis rather than at the tip. It is identified at birth or early childhood and is unrelated to scrotal masses or hernias. It does not produce inguinal swelling or changes with coughing.