Unexpected Long Lower Limb in Patients with Unilateral Hip Dislocation
Zhendong Zhang1,2, Dianzhong Luo1, Hui Cheng1
1Division of Joint Surgery, Department of Orthopaedic Surgery, First Affiliated Hospital of Chinese People's Liberation Army General Hospital, Beijing, China.
The Journal of Bone and Joint Surgery. American Volume
|March 7, 2018
Summary
Patients with unilateral developmental dislocation of the hip (DDH) often have lower-limb-length discrepancy (LLD) due to increased tibial length, not femoral length. Pelvic radiographs are unreliable for predicting LLD in these cases.
Area of Science:
- Orthopedics
- Radiology
- Pediatric Orthopedics
Background:
- Predicting lower-limb-length discrepancy (LLD) using pelvic radiographs is common.
- The impact of unilateral developmental dislocation of the hip (DDH) on LLD and radiograph reliability is unclear.
Purpose of the Study:
- To analyze LLD characteristics in patients with unilateral DDH.
- To assess the reliability of pelvic radiographs for predicting LLD in unilateral DDH.
Main Methods:
- Retrospective review of radiographic data from patients with unilateral DDH (March 2011-May 2016).
- Measurements included femoral length, tibial length, skeletal limb length, and lesser trochanter-tibial plafond distance.
- Comparison of LLD between Hartofilakidis type II and type III DDH.
Main Results:
- Tibial length, skeletal limb length, and lesser trochanter-tibial plafond distance were significantly greater on the ipsilateral (DDH) side in most patients.
- Femoral length did not differ significantly between sides.
- No significant difference in LLD or measurements between Hartofilakidis type II and III DDH.
Conclusions:
- Unilateral DDH can cause LLD due to increased ipsilateral tibial length and limb length, with unpredictable femoral length.
- Pelvic radiographs are unreliable for predicting LLD in unilateral DDH.
- Full-length standing radiographs are recommended for preoperative planning.
More Related Videos
08:40Author Spotlight: A Novel 3D-Printed Titanium Implant for Minimally Invasive Treatment of Hip Dysplasia in Young Dogs
Published on: April 19, 2024
3.8K
05:28Author Spotlight: Enhancing Upper Limb Rehabilitation in Stroke Patients Through Advanced Robotic and Neuromodulation Technologies
Published on: October 11, 2024
1.2K
Related Concept Videos
01:20Arteries of Lower Limbs
4.9K
The external iliac artery transitions out of the body cavity, entering the femoral region of the lower leg, and is renamed the femoral artery at the point where it traverses the body wall. This artery is responsible for the distribution of blood to the thigh's deep muscles and the skin's ventral and lateral regions, achieved through several minor branches and the lateral deep femoral artery, which also spawns a lateral circumflex artery. The knee area receives blood from the genicular...
4.9K
01:15Veins of Lower Limbs
2.6K
The human body consists of an intricate network of veins responsible for the crucial task of blood drainage from the lower limbs. These veins can be categorized into two main types: deep veins and superficial veins.
Formed by the union of the medial and lateral plantar veins, the posterior tibial vein, rising through the calf muscle, assimilates the fibular vein. The anterior tibial vein, a superior extension of the foot's dorsalis pedis vein, merges with the posterior tibial vein at the...
Formed by the union of the medial and lateral plantar veins, the posterior tibial vein, rising through the calf muscle, assimilates the fibular vein. The anterior tibial vein, a superior extension of the foot's dorsalis pedis vein, merges with the posterior tibial vein at the...
2.6K
01:17Veins of Upper Limbs
4.4K
The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
4.4K
01:12Arteries of the Upper Limbs
2.5K
The subclavian artery transitions into the axillary artery as it exits the chest and enters the axillary region. This artery is critical for supplying blood to the shoulder area, including the head of the humerus, through the humeral circumflex arteries. As the vessel continues into the upper arm or brachium, it becomes the brachial artery. This artery plays a key role in vascularizing the brachial region and bifurcates at the elbow into several branches. These branches include the deep...
2.5K
01:15Bones of the Upper Limb: Ulna
4.6K
The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
4.6K
01:09Bones of the Upper Limb: Radius
5.0K
The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a...
The radius has a nail-shaped head, and a...
5.0K