Improved demonstration of cartilage narrowing in the knee joint using standing PA flexed radiographs.

William W. Scott, Douglas P. Beall, John Eng, Chance L. Matthiesen, Scott Prater, John Enis

Research output: Contribution to journalArticle

Abstract

OBJECTIVE: To compare standing PA flexed (SPAF) knee radiographs of the knees with standing full-extension AP(SAP) radiographs for demonstration of narrowing of the articular cartilage of the knee joint and the presence and size of osteophytes and to determine if sclerosis is a predictor of the severity of joint space narrowing. DESIGN: 220 knees in 110 consecutive patients visiting the orthopaedic clinic with knee pain and having both SPAF radiographs and SAP radiographs at the same visit were evaluated by a musculoskeletal radiologist for cartilage narrowing in the knee joint using a scale 0-3 with 0= normal and 3= bone on bone. Osteophytes were also graded 0-3 and sclerosis as present or absent. Patients:The subjects were patients of one of the authors (C.A.J) who ordered both types of radiographs on most of his patients. RESULTS: In 47% of knees the SPAF radiograph showed narrowing more severe than the SAP radiograph. In 5% the SAP view showed narrowing more severe than the SPAF view. In the medial compartment the SPAF view showed significantly larger osteophytes than the SAP view. The osteophyte size difference was not significant in the lateral compartment. If sclerosis was present on the AP view, there was a greater than 80% chance that the SPAF view would show greater narrowing. CONCLUSION: The SPAF radiograph frequently shows more cartilage narrowing in the knee joint than does the SAP view. It is valuable for routine use or when the clinical severity of arthritis in the knee joint seems to be greater than that demonstrated on the AP standing view. Sclerosis on the SAP view makes it especially likely that the SPAF view will show greater cartilage narrowing.

Original languageEnglish (US)
Pages (from-to)469-472
Number of pages4
JournalJournal - Oklahoma State Medical Association
Volume100
Issue number12
StatePublished - Dec 2007
Externally publishedYes

Fingerprint

Osteophyte
Knee Joint
Cartilage
Sclerosis
Knee
Articular Cartilage
Arthritis
Orthopedics
Joints
Bone and Bones
Pain

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Improved demonstration of cartilage narrowing in the knee joint using standing PA flexed radiographs. / Scott, William W.; Beall, Douglas P.; Eng, John; Matthiesen, Chance L.; Prater, Scott; Enis, John.

In: Journal - Oklahoma State Medical Association, Vol. 100, No. 12, 12.2007, p. 469-472.

Research output: Contribution to journalArticle

Scott, William W. ; Beall, Douglas P. ; Eng, John ; Matthiesen, Chance L. ; Prater, Scott ; Enis, John. / Improved demonstration of cartilage narrowing in the knee joint using standing PA flexed radiographs. In: Journal - Oklahoma State Medical Association. 2007 ; Vol. 100, No. 12. pp. 469-472.
@article{0089393635634bbcb9452cd1fbf05435,
title = "Improved demonstration of cartilage narrowing in the knee joint using standing PA flexed radiographs.",
abstract = "OBJECTIVE: To compare standing PA flexed (SPAF) knee radiographs of the knees with standing full-extension AP(SAP) radiographs for demonstration of narrowing of the articular cartilage of the knee joint and the presence and size of osteophytes and to determine if sclerosis is a predictor of the severity of joint space narrowing. DESIGN: 220 knees in 110 consecutive patients visiting the orthopaedic clinic with knee pain and having both SPAF radiographs and SAP radiographs at the same visit were evaluated by a musculoskeletal radiologist for cartilage narrowing in the knee joint using a scale 0-3 with 0= normal and 3= bone on bone. Osteophytes were also graded 0-3 and sclerosis as present or absent. Patients:The subjects were patients of one of the authors (C.A.J) who ordered both types of radiographs on most of his patients. RESULTS: In 47{\%} of knees the SPAF radiograph showed narrowing more severe than the SAP radiograph. In 5{\%} the SAP view showed narrowing more severe than the SPAF view. In the medial compartment the SPAF view showed significantly larger osteophytes than the SAP view. The osteophyte size difference was not significant in the lateral compartment. If sclerosis was present on the AP view, there was a greater than 80{\%} chance that the SPAF view would show greater narrowing. CONCLUSION: The SPAF radiograph frequently shows more cartilage narrowing in the knee joint than does the SAP view. It is valuable for routine use or when the clinical severity of arthritis in the knee joint seems to be greater than that demonstrated on the AP standing view. Sclerosis on the SAP view makes it especially likely that the SPAF view will show greater cartilage narrowing.",
author = "Scott, {William W.} and Beall, {Douglas P.} and John Eng and Matthiesen, {Chance L.} and Scott Prater and John Enis",
year = "2007",
month = "12",
language = "English (US)",
volume = "100",
pages = "469--472",
journal = "The Journal of the Oklahoma State Medical Association",
issn = "0030-1876",
publisher = "Oklahoma State Medical Association",
number = "12",

}

TY - JOUR

T1 - Improved demonstration of cartilage narrowing in the knee joint using standing PA flexed radiographs.

AU - Scott, William W.

AU - Beall, Douglas P.

AU - Eng, John

AU - Matthiesen, Chance L.

AU - Prater, Scott

AU - Enis, John

PY - 2007/12

Y1 - 2007/12

N2 - OBJECTIVE: To compare standing PA flexed (SPAF) knee radiographs of the knees with standing full-extension AP(SAP) radiographs for demonstration of narrowing of the articular cartilage of the knee joint and the presence and size of osteophytes and to determine if sclerosis is a predictor of the severity of joint space narrowing. DESIGN: 220 knees in 110 consecutive patients visiting the orthopaedic clinic with knee pain and having both SPAF radiographs and SAP radiographs at the same visit were evaluated by a musculoskeletal radiologist for cartilage narrowing in the knee joint using a scale 0-3 with 0= normal and 3= bone on bone. Osteophytes were also graded 0-3 and sclerosis as present or absent. Patients:The subjects were patients of one of the authors (C.A.J) who ordered both types of radiographs on most of his patients. RESULTS: In 47% of knees the SPAF radiograph showed narrowing more severe than the SAP radiograph. In 5% the SAP view showed narrowing more severe than the SPAF view. In the medial compartment the SPAF view showed significantly larger osteophytes than the SAP view. The osteophyte size difference was not significant in the lateral compartment. If sclerosis was present on the AP view, there was a greater than 80% chance that the SPAF view would show greater narrowing. CONCLUSION: The SPAF radiograph frequently shows more cartilage narrowing in the knee joint than does the SAP view. It is valuable for routine use or when the clinical severity of arthritis in the knee joint seems to be greater than that demonstrated on the AP standing view. Sclerosis on the SAP view makes it especially likely that the SPAF view will show greater cartilage narrowing.

AB - OBJECTIVE: To compare standing PA flexed (SPAF) knee radiographs of the knees with standing full-extension AP(SAP) radiographs for demonstration of narrowing of the articular cartilage of the knee joint and the presence and size of osteophytes and to determine if sclerosis is a predictor of the severity of joint space narrowing. DESIGN: 220 knees in 110 consecutive patients visiting the orthopaedic clinic with knee pain and having both SPAF radiographs and SAP radiographs at the same visit were evaluated by a musculoskeletal radiologist for cartilage narrowing in the knee joint using a scale 0-3 with 0= normal and 3= bone on bone. Osteophytes were also graded 0-3 and sclerosis as present or absent. Patients:The subjects were patients of one of the authors (C.A.J) who ordered both types of radiographs on most of his patients. RESULTS: In 47% of knees the SPAF radiograph showed narrowing more severe than the SAP radiograph. In 5% the SAP view showed narrowing more severe than the SPAF view. In the medial compartment the SPAF view showed significantly larger osteophytes than the SAP view. The osteophyte size difference was not significant in the lateral compartment. If sclerosis was present on the AP view, there was a greater than 80% chance that the SPAF view would show greater narrowing. CONCLUSION: The SPAF radiograph frequently shows more cartilage narrowing in the knee joint than does the SAP view. It is valuable for routine use or when the clinical severity of arthritis in the knee joint seems to be greater than that demonstrated on the AP standing view. Sclerosis on the SAP view makes it especially likely that the SPAF view will show greater cartilage narrowing.

UR - http://www.scopus.com/inward/record.url?scp=39749126183&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=39749126183&partnerID=8YFLogxK

M3 - Article

C2 - 18251237

AN - SCOPUS:39749126183

VL - 100

SP - 469

EP - 472

JO - The Journal of the Oklahoma State Medical Association

JF - The Journal of the Oklahoma State Medical Association

SN - 0030-1876

IS - 12

ER -