Evidence map›Paper›PMID 32273662›Full record

ArticleJournal of orthopaedics

An anatomic classification for heterotopic ossification about the hip.

Malcolm R DeBaun, Chason Ziino, Christopher LaPrade, Stephanie Pun, Raffi S Avedian, Michael J Bellino

Erratum issuedAbstract read
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Article in Journal of orthopaedics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Malcolm R DeBaunDepartment of Orthopaedic Surgery, Stanford University Medical Center, Palo Alto, CA, USA.
Chason ZiinoDepartment of Orthopaedic Surgery, Stanford University Medical Center, Palo Alto, CA, USA.
Christopher LaPradeDepartment of Orthopaedic Surgery, Stanford University Medical Center, Palo Alto, CA, USA.
Stephanie PunDepartment of Orthopaedic Surgery, Stanford University Medical Center, Palo Alto, CA, USA.
Raffi S AvedianDepartment of Orthopaedic Surgery, Stanford University Medical Center, Palo Alto, CA, USA.
Michael J BellinoDepartment of Orthopaedic Surgery, Stanford University Medical Center, Palo Alto, CA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designRetrospective cohort. SUMMARY OF BACKGROUND DATA: Heterotopic ossification (HO) about the hip is a debilitating condition that can occur after fixation for acetabular fractures, total hip replacement, or polytrauma with closed head injuries. No classification exists that informs surgical treatment. PURPOSE: To establish a classification system for HO about the hip by reviewing a consecutive series of HO at a single institution. It was hypothesized that HO about the hip could be grouped into a novel classification scheme based upon the location and involved structures of the hip.

methodsRetrospective chart review of single center's case log for HO excision from 2004 to 2018 was performed. Inclusion criteria included all patients undergoing excision of heterotopic bone excision about the hip. Demographic data, pre and post hip range of motion, surgical approach for each surgery, index surgery date and interval to excision are reported as well as presence and location of HO and Brooker classification.

resultsA total of 36 patients (21 men and 15 women) and 40 hips were identified meeting inclusion criteria. The mean age at the time of the index surgery was 47 (range, 16-77 years). Traumatic injury with fracture (35%) included 9 acetabular fractures (22%), 2 long bone fractures (5%) treated with intramedullary devices, one displaced femoral neck fracture (2%), and one pelvic ring injury (2%). Total hip arthroplasty accounted for 32% of patients. Brooker classification was type 4 (35%), 3 (25%), 2 (23%), 1(17%) which translated to 55% anterior, 48% posterior, 3% medial with respect to location. Average improvement in hip flexion and abduction was 22 and 8°, respectively.

conclusionThis study identified discrete locations for heterotopic ossification following hip or acetabulum surgery. Both posterior and anterior structures are implicated in the formation of HO, and this investigation presents a novel classification to guide surgical approach for HO excision based upon location.

Indexed as

AcetabulumHeterotopic ossificationHipHip replacementTrauma

Identifiers

PMID32273662
PMCPMC7132042

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.