From the Research
X-ray Protocol for Clubfoot (Talipes Equinovarus) Deformity
- The X-ray protocol for clubfoot deformity involves taking anteroposterior (AP) and lateral radiographs of both the normal and affected feet in maximum correction 1.
- The AP radiograph is used to measure the talocalcaneal angle and talo-first metatarsal angle, while the lateral radiograph is used to measure the talocalcaneal angle 2.
- The talocalcaneal index, which is calculated from the AP and lateral radiographs, can also be used to assess the severity of the deformity 2.
- Other radiographic parameters, such as the hindfoot alignment angle and hindfoot moment arm, can be used to evaluate the hindfoot alignment in patients with clubfoot deformity 3.
- The use of weight-bearing radiographs is recommended to assess the foot alignment and deformity in a functional position 4, 3.
- The X-ray protocol may vary depending on the specific requirements of the treatment and the preference of the physician or radiologist.
Radiographic Parameters
- Talocalcaneal angle: measures the angle between the talus and calcaneus bones in the AP and lateral radiographs 1, 2.
- Talo-first metatarsal angle: measures the angle between the talus and first metatarsal bones in the AP radiograph 1, 2.
- Talocalcaneal index: calculates the severity of the deformity based on the AP and lateral radiographs 2.
- Hindfoot alignment angle: measures the angle between the hindfoot and the tibia in the weight-bearing radiograph 3.
- Hindfoot moment arm: measures the distance between the hindfoot and the tibia in the weight-bearing radiograph 3.
Clinical Correlation
- The radiographic parameters can be correlated with clinical evaluation of the deformity, such as the Pirani score 2.
- The clinical evaluation can be used to assess the severity of the deformity and monitor the progress of treatment 2.
- The correlation between radiographic and clinical evaluation can help to identify the most effective treatment approach for each patient 2, 3.