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"Missed" or late-diagnosed congenital dislocation of the hip. A clinical entity
Insights
Delayed dislocation of the hip can occur even after normal neonatal examinations. Early diagnosis of hip dysplasia is challenging, necessitating repeated examinations for accurate congenital hip dislocation detection.
Area of Science:
- Orthopedics
- Pediatric Medicine
- Developmental Biology
Background:
- Neonatal hip examinations are standard practice to detect congenital hip dislocation.
- Early diagnosis of developmental dysplasia of the hip (CDH) is crucial for effective treatment.
- Previous studies indicate high success rates for early CDH detection.
Observation:
- A series of cases revealed hip dislocations diagnosed months after initial normal examinations by orthopedic surgeons.
- Ten documented cases showed normal hip findings on early examination, yet later developed CDH.
- In five cases, examinations were performed by pediatric orthopedic specialists, highlighting diagnostic challenges.
Findings:
- Clinical signs of hip dysplasia are not always apparent in early examinations, even in infants over one year old.
- Congenital hip dysplasia is a dynamic condition that can progress after initial assessments.
- Diagnostic imaging, like X-rays, can incidentally reveal CDH during examinations for other conditions.
Implications:
- Physicians may face erroneous blame for missed early diagnoses of CDH.
- The possibility of delayed hip dislocation requires further investigation and awareness.
- Parents should be informed about the risk of delayed dislocation, and repeated hip examinations are recommended.
Abstract:
Reported series of neonatal examinations of the hip by trained orthopedic surgeons reveal cases of dislocation of the hip discovered many months after the previous normal examination. The possibility of delayed dislocation of the hip needs further study and its recognition is important for the medical and legal professions. Physicians may be blamed erroneously for failure to diagnose CDH at an early stage. In 10 documented cases, early examinations by qualified experts revealed normal hip findings, although the patients were later discovered to have CDH. In five instances, the physical examinations were done by specialists in children's orthopedics. In one case of a child being examined for knock-knee, X-rays accidently included the hips and showed CDH. Thus, clinical signs are not infallible and an occasional case will be missed on examination even in children older than one year. Congenital dysplasia of the hip is a dynamic process and parents should be warned of the possibility of delayed dislocation. Repeated examinations of the hips are recommended.