Comparative Analysis of Structural Differences in Progressive Collapsing Foot Deformity With and Without Hallux
Chien-Shun Wang1,2, Erik Jesús Huánuco Casas3,4, Grayson M Talaski5
1Division of Orthopaedic Trauma, Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan.
Foot & Ankle International
|November 26, 2024
Summary
Progressive collapsing foot deformity (PCFD) with hallux valgus (HV) shows distinct structural differences. Key indicators include infratalar-supratalar angle and first metatarsal rotation, aiding in understanding complex foot deformities.
Area of Science:
- Orthopedics
- Podiatry
- Radiology
Background:
- Progressive collapsing foot deformity (PCFD) and hallux valgus (HV) are complex 3D foot deformities.
- Understanding structural differences between PCFD with and without HV is crucial for effective treatment.
Purpose of the Study:
- To investigate structural and alignment differences between PCFD with and without HV.
- Utilize weightbearing computed tomography (WBCT) for detailed 3D analysis.
Main Methods:
- Enrolled patients aged 18+ with PCFD undergoing WBCT.
- Assessed 2D PCFD/HV parameters and manually measured coronal plane alignment, including foot/ankle offset and medial column bone pronation.
- Examined specific talar and calcaneal angles relative to the ground and each other.
Main Results:
- 72 feet (58 patients) analyzed; 33 with HV, 39 without.
- PCFD with HV group showed higher infratalar-supratalar angle and increased pronation at the first tarsometatarsal joint and first metatarsal.
- Significant associations found between HV deformity and first metatarsal intrinsic rotation, infratalar-supratalar angle, and first tarsometatarsal joint rotation.
Conclusions:
- Confirmed significant structural and alignment differences between PCFD with and without HV.
- Infratalar-supratalar angle, first tarsometatarsal joint rotation, and first metatarsal intrinsic rotation are key indicators associated with HV deformity.
Related Concept Videos
01:16Structural Joints: Synovial Joints
Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
01:10Ankle Joint
The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
01:20Structural Classification of Joints
Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
A fibrous joint is where the adjacent bones are united by fibrous connective...