Brachymetacarpia and Brachymetatarsia in Patients with Multiple Hereditary Exostosis

Background@#Multiple hereditary exostosis is a common autosomal dominant inherited musculoskeletal disorder that manifests with multiple osteochondromas. The clinical manifestations and pathological characteristics of osteochondromas found in the long bone and genetic alterations related to multiple hereditary exostosis have been widely reported. In this study, we investigated the characteristics of brachymetacarpia and brachymetatarsia associated with multiple hereditary exostosis. @*Methods@#Of the 133 patients with a diagnosis of multiple hereditary exostosis who were recruited from 2005 to 2018, 101 patients who underwent plain radiography after 10 years of age were included. There were 55 male (54.5%) and 46 female (45.5%) patients. Brachymetacarpia or brachymetatarsia was diagnosed when disruption of the Lièvre parabola connecting the metacarpal or metatarsal heads was observed on plain radiographs. Three orthopedic surgeons individually reviewed hand and foot plain radiographs. @*Results@#Of the 101 patients, 41 patients (40.6%) had more than 1 brachymetacarpia (88 cases) or brachymetatarsia (81 cases). Among 41 cases, 22 (53.7%) were male and 19 (46.3%) were female. The mean age at the time of radiographic evaluation of the hands and feet was 14.6 years (range, 10–63 years). Shortening was most commonly found in the 3rd and 4th metacarpal or metatarsal bones. @*Conclusions@#We found a relatively high incidence of brachymetacarpia and brachymetatarsia in our patients. Physicians should suspect the presence of brachymetacarpia and brachymetatarsia when treating patients with multiple hereditary exostosis.

Evaluation of the Outcomes according to Etiology in the Pediatric Pes Planovalgus after Lateral Column Lengthening: By Radiologic and Pedobarographic Measurements / 대한정형외과학회잡지

PURPOSE: Pes planovalgus is one of the most common foot deformities among pediatric orthopedic diseases and is divided into idiopathic and neuromuscular planovalgus according to its etiology. This study evaluated the radiologic and pedobarographic outcomes of the treatment for pes planovalgus in children treated with lateral column lengthening, compared the outcomes according to the etiology, and investigated the correlation between the radiologic and pedobarographic findings. MATERIALS AND METHODS: Sixty-three patients (97 feet), who underwent lateral column lengthening, were divided into groups of 30 patients (47 feet) with neuromuscular disease and 33 patients (50 feet) with idiopathic etiology. The preoperative, immediately postoperative, 1 year, and 3 year follow-up radiographic measurements on the plain radiograph antero-posterior (AP) and lateral view were compared. In pedobarography, the foot pressures were subdivided into 4 areas to measure the contact time, contact area, peak pressure, and maximum force. The pre- and postoperative pedobarographic measurements were compared and the correlations between the radiographic and pedobarographic measurements were evaluated. RESULTS: The radiographic index at the 1st postoperative year and 3rd postoperative follow-up did not show significant differences according to the etiology. In pedobarography, idiopathic planovalgus showed a significant increase in the maximum force in the hindfoot and forefoot. The correlation between the radiologic findings and pedobarographic findings was statistically significant between the tibiocalcaneal angle in the lateral view and the maximum force, and the contact area of hindfoot on pedobarography, between tibiocalcaneal angle in the lateral view and the contact area of the toes in idiopathic planovalgus. In neuromuscular planovalgus, the peak pressure in the hindfoot had a strong negative correlation with talonavicular coverage angle in the AP view and talo-1st metatarsal angle, and the talohorizontal angle in the lateral view. CONCLUSION: Lateral column lengthening is an effective surgical procedure for flatfoot patients. On the other hand, the radiographic examination has limitations for accurate assessments of the postoperative results and prognosis. Qualitative and quantitative evaluations are available by pedobarography and it is a useful instrument for an evaluation of planovalgus when used in conjunction with radiography.

Validity of the Thoracolumbar Injury Classification System for Thoracolumbar Spine Injuries

STUDY DESIGN: Retrospective study. OBJECTIVES: To evaluate the validity of the thoracolumbar injury classification system (TLICS) when making treatment decisions in a group of thoracolumbar fracture patients. SUMMARY OF LITERATURE REVIEW: Few studies have evaluated the validity of the TLICS in consecutively treated patients, although many have evaluated the application of the TLICS to thoracolumbar injuries. MATERIALS AND METHODS: A retrospective study was performed among the 230 patients who were treated from 2003 to 2015 in our hospital for thoracolumbar injuries. Evaluations were made of clinical outcomes and radiologic results, and each case was analysed and scored according to the American Spinal Injury Association scale, the Magerl/AO classification, and the TLICS classification by 2 spinal surgeons. RESULTS: Of the 230 patients, 116 (50.4%) received conservative treatment and 114 (49.6%) received surgical treatment. Of the 116 patients who received conservative treatment, 112 (96.6%) were treated according to the TLICS guidelines. Conservative treatment failed for 2 of the 4 patients (1.7%) whose treatment did not correspond with TLICS, and they required surgical treatment. Of the 114 patients who underwent surgical treatment, in 87 (76.3%) the treatment corresponded to the TLICS guidelines. CONCLUSIONS: The TLICS classification showed high validity for the conservative treatment of thoracolumbar injuries.