Which morphologies of synovial folds result from degeneration and/or aging of the radiohumeral joint: An anatomic study with cadavers and embryos

Isogai, Satoshi; Murakami, Gen; Wada, Takuro; Ishii, Seiichi

doi:10.1067/mse.2001.112956

Cited by 52 publications

(91 citation statements)

References 7 publications

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“…The posterolateral fold is longer and wider than the other sections and is often more seen deeply inserted in the radiohumeral joint. The most common synovial plica of the elbow is the posterolateral radiohumeral synovial fold, which is found in 86 to 100% of the asymptomatic population, while the lateral olecranon synovial fold is found in 30% of the population [3,10,11]. Some studies have reported that the plica could be of a circular type in 2-15% of the population [10,11].…”

Section: Discussionmentioning

confidence: 99%

“…The most common synovial plica of the elbow is the posterolateral radiohumeral synovial fold, which is found in 86 to 100% of the asymptomatic population, while the lateral olecranon synovial fold is found in 30% of the population [3,10,11]. Some studies have reported that the plica could be of a circular type in 2-15% of the population [10,11]. We evaluated the posterolateral RH plica because it can be seen more easily by US than other parts of the plica due to its dimensions.…”

Section: Discussionmentioning

confidence: 99%

“…Cadaveric and anatomical studies have reported high rates of visualization of the posterolateral RH plica, including Duparc et al [10] with 86% and Isogai et al [11] with 100%. These studies have reported that degenerative changes, inflammation, injury, and aging are closely related to the morphology of the plica.…”

Section: Discussionmentioning

confidence: 99%

“…These studies have reported that degenerative changes, inflammation, injury, and aging are closely related to the morphology of the plica. Isogai et al [11] reported that RH plicae morphologies in adults were different compared to embryonic plicae, and that the plicae were much more homogenous and larger in embryos. In addition, they showed that the RH plica was circular in shape in 15% of the embryonic elbows evaluated.…”

Section: Discussionmentioning

confidence: 99%

“…Morphological measurements of the posterior RH plica are described in the studies of Duparc et al [10], Isogai et al [11], Husarik et al [14], and Koh et al [15]. These studies reported varied results: Duparc et al [10] and Isogai et al [11] reported thickness of 1.7 mm, while Koh et al [15] reported thickness of 3.3 mm, and Husarik et al [14] found that the maximal thickness of the posterolateral RH plica was 1.9 mm.…”

Section: Discussionmentioning

confidence: 99%

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Ultrasonographic evaluation of the posterolateral radiohumeral plica in asymptomatic subjects and patients with osteoarthritis.

et al. 2015

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Aims: The aim of this study was to describe the morphological features of posterolateral radiohumeral (RH) plica in asymptomatic subjects and in patients with elbow osteoarthritis using ultrasonography (US). Material and methods: The control group included a total of 100 healthy elbows (51 subjects) and the study group consisted of 22 elbows (22 patients) with osteoarthritis confirmed clinically and by imaging methods. The presence, length, height, thickness, cross sectional area, shape, and echogenicity of the posterolateral RH plica were evaluated in both groups. In addition, humeral and radial cartilage thicknesses were also measured. The clinical characteristics and radiographic findings of the study group were evaluated. Results: The posterolateral RH plica was present in all elbows of the control group (100%) and in 15 (68%) of elbows in the study group (p<0.05). All sizes and cross sectional areas of the plica were statistically significantly lower in the elbows of the study group compared to the elbows of the control group (p<0.05 and p<0.001, respectively). The detected posterolateral RH plicae were triangularly shaped in both groups. The plica was hyperechoic in 95 elbows (95%) in the control group and 7 osteoarthritis elbows (46.7%) (p<0.001). The thicknesses of radial and humeral cartilage were also significantly higher in the control group (p<0.001). There were no statistically significant relationships between the radiographic scoring of the elbow osteoarthritis and US findings of the RH plica (all p>0.05). Conclusions: The posterolateral RH plica can be successfully evaluated using US. Based on these findings, it appears that osteoarthritis can result in a reduction of sizes of the RH plica and affect its morphological appearance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Ultrasonographic evaluation of the posterolateral radiohumeral plica in asymptomatic subjects and patients with osteoarthritis.

et al. 2015

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Intra‐articular inclusions of the elbow joint complex

Mercer¹,

Bogduk²

2007

Clinical Anatomy

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An abundant clinical literature implicates intra-articular inclusions in various pathological conditions of the elbow, but the anatomical literature offers piecemeal descriptions of these structures. The aim of this study was to determine the prevalence, disposition, and gross morphology of intra-articular inclusions of the entire elbow joint complex. Twenty-eight elbow joints from 17 adult embalmed cadavera were studied by macrodissection. Three types of inclusions were identified. Fat pads and fibroadipose meniscoids were found in all joints while capsular rims occurred in 50% of radiohumeral and humeroulnar joints. Fat pads were located opposite the olecranon, coronoid, and radial fossae. Fibroadipose meniscoids were found in the nonarticular waists of the trochlear notch and protruded into the posterolateral aspect of the radiohumeral joint. Fibroadipose meniscoids and fat pads are characteristic structures of the elbow joint complex. Fat pads appear to act as deformable space fillers, while the radio-humeral fibroadipose meniscoid appears to protect articular cartilage exposed during normal movement. Arguments are raised whether these structures may act as the nidus for arthrofibrosis and that the radiohumeral meniscoid may be involved in lateral epicondylalgia.

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