The most widely used radiologic classification system for heterotopic ossification after total hip arthroplasty (THA) is the Brooker scale. In 2002, Della Valle et al proposed a modified rating system for heterotopic ossification to increase intraobserver reliability and interobserver agreement. To date, no study comparing these 2 classification systems has been conducted. Moreover, these studi...

The objective of this study was to determine whether short exposure to pulsed electromagnetic fields (PEMF) accelerates bone repair and peri-implant bone formation in a rat tibial model at different times. Sixty Wistar rats were employed. Sterile custom fabricated commercially pure cylinder threaded titanium implants were placed in the right tibial crest, and an osteotomy was performed in the l...

Pryse-Davies, J., Smitham, J. H., and Napier, K. A. (1974). Archives of Disease in Childhood, 49, 425. Factors influencing development of secondary ossification centres in the fetus and newborn: a postmortem radiological study. Whole body radiographs of 379 consecutive perinatal necropsies were used to determine the presence and diameters of secondary ossification centres in the os calcis, talu...

A 52-year-old man, previously healthy with no known metabolic or systemic illness, presented acutely following a direct trauma of the right foot. On examination there was soft tissue swelling and tenderness around the dorsum of the foot without neurological deficit. Plain radiography of the foot and the leg revealed a 10 centimeters ossification within the right Achilles tendon without fracture...

BACKGROUND Heterotopic ossification is a common postoperative complication of acetabular fracture. However, functionally significant heterotopic ossification with associated late bone defects in the posterior wall of the acetabulum is rare and challenging to treat. When heterotopic ossification is a late complication of failed acetabular fracture operation, it is disabling and may only be treat...

Petrified ear Pinnal ossification Exposure to hypothermia Auricular calcification Ectopic ossification Abstract A case of an otherwise healthy 66-year-old male with bilateral symmetric ossification of his ears is described. The rare occurrence of petrified ears is emphasized, and possible etiologic factors are discussed. No other explanation than anamnestic prolonged exposure to hypothermia was...

Heterotopic ossification in colorectal carcinoma is extremely rare. This report presents the case of a 57-year-old male who had undergone a low anterior resection following a diagnosis of rectal carcinoma. Histological examination showed heterotopic ossification in the tumor. The patient was referred to Ibaraki Medical Center, Tokyo Medical University, with a diagnosis of rectal carcinoma by a ...

The presacral vertebrae have various secondary centers of ossification, whose timing of fusion can be used for age estimation of human skeletal remains up to the middle to the latter third decade. However, detailed information about the age at which these secondary centers of ossification fuse has been lacking. In this study, the timing of epiphyseal union in presacral vertebrae was studied in ...

BACKGROUND The ligamentum longitudinale anterius is a broad and strong band of fibrous tissue that runs along the anterior surfaces of the bodies of the vertebrae. AIM The study was undertaken to evaluate the incidence of ossified ligamentum longitudinale anterius in adult dry human vertebra. MATERIALS AND METHODS This study was carried out on 95 sets of dry human vertebral columns irrespec...

Calcific tendinitis of the rotator cuff is often encountered in daily clinical practice, but cases with rotator cuff tears associated with ossification in the rotator cuff are extremely rare. We experienced a 74-year-old male case with ossification in the rotator cuff associated with extensive tearing. At another hospital he had been diagnosed with calcific rotator cuff tendinitis and treated c...