Tag Archives: knee

Knee Lateral
4
Feb

Overview

The lateral knee radiograph profiles the femorotibial joint patella and soft tissues to assess effusion and fractures. The knee is flexed approximately 20 to 30 degrees for optimal visualization. This view is essential for trauma and preoperative evaluation.

Technique

Position the patient in true lateral with femoral condyles superimposed and the knee flexed. Center the detector to the joint and include the distal femur and proximal tibia. Use appropriate exposure and immobilize the limb.

Clinical Indications

Lateral knee is indicated for trauma suspected patellar fracture and evaluation of joint effusion. It complements AP and skyline views for comprehensive assessment. MRI is used for soft tissue evaluation when indicated.

Image Assessment

Evaluate patellar position and trochlear groove alignment and inspect for cortical disruption. Assess joint effusion and soft tissue swelling. Document findings relevant to orthopedic management.

Knee AP Weightbearing
4
Feb

Overview

AP weightbearing knee radiographs evaluate joint space narrowing and alignment under physiologic load. The patient stands with equal weight on both legs and the detector centered to the knees. This view is important for osteoarthritis assessment and preoperative planning.

Technique

Position the patient standing with knees extended and center the detector to the joint line. Use consistent weightbearing technique and include both knees for comparison when indicated. Collimate to the knee and use appropriate exposure.

Clinical Indications

Weightbearing AP knee is indicated for osteoarthritis evaluation and symptomatic joint assessment. It reveals joint space narrowing and varus or valgus deformity under load. Non weightbearing views may underestimate degenerative change.

Image Assessment

Assess medial and lateral joint spaces alignment and presence of osteophytes. Evaluate subchondral sclerosis and cystic change. Report findings relevant to conservative or surgical management.