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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Meyr, Andrew J. Myers, Adam Pontious, Jane |
| Description | Author Affiliation: Meyr AJ ( Assistant Professor, Department of Podiatric Surgery, Temple University School of Podiatric Medicine, Philadelphia, PA. Electronic address: ajmeyr@gmail.com.); Myers A ( Private Practice, Kaiser Permanente Southern California, Redlands, CA.); Pontious J ( Associate Professor, Department of Podiatric Surgery, Temple University School of Podiatric Medicine, Philadelphia, PA.) |
| Abstract | Although the transverse plane radiographic parameters of the first intermetatarsal angle (IMA), hallux abductus angle (HAA), and the metatarsal-sesamoid position (MSP) form the basis of preoperative procedure selection and postoperative surgical evaluation of the hallux abductovalgus deformity, the so-called normal values of these measurements have not been well established. The objectives of the present study were to (1) evaluate the descriptive statistics of the first IMA, HAA, and MSP from a large patient population and (2) to determine an objective basis for defining 'normal' versus 'abnormal' measurements. Anteroposterior foot radiographs from 373 consecutive patients without a history of previous foot and ankle surgery and/or trauma were evaluated for the measurements of the first IMA, HAA, and MSP. The results revealed a mean measurement of 9.93°, 17.59°, and position 3.63 for the first IMA, HAA, and MSP, respectively. An advanced descriptive analysis demonstrated data characteristics of both parametric and nonparametric distributions. Furthermore, clear differentiations in deformity progression were appreciated when the variables were graphically depicted against each other. This could represent a quantitative basis for defining 'normal' versus 'abnormal' values. From the results of the present study, we have concluded that these radiographic parameters can be more conservatively reported and analyzed using nonparametric descriptive and comparative statistics within medical studies and that the combination of a first IMA, HAA, and MSP at or greater than approximately 10°, 18°, and position 4, respectively, appears to be an objective 'tipping point' in terms of deformity progression and might represent an upper limit of acceptable in terms of surgical deformity correction. |
| File Format | HTM / HTML |
| ISSN | 10672516 |
| Issue Number | 4 |
| Volume Number | 53 |
| e-ISSN | 15422224 |
| Journal | The Journal of Foot and Ankle Surgery |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-07-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Orthopedics Discipline General Surgery Hallux Valgus Hallux Adolescent Adult Aged Aged, 80 And Over Female Humans Male Metatarsophalangeal Joint Middle Aged Radiography Reference Values Young Adult Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Surgery |
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