Histologic evaluation of thermal capsulorrhaphy of human shoulder joint capsule with monopolar radiofrequency energy during short- to long-term follow-up.
← Research streamNo significant differences were reported for intact synovial layer, subsynovial edema, collagen morphology, and inflammatory cells between controls and mid-/long-term mRFE groups. The short-term mRFE group showed increased cellularity and vascularity versus m…
Study snapshot
Abstract
PURPOSE: The purpose of this study was to evaluate the histologic morphology of human shoulder joint capsule after thermal capsulorrhaphy with monopolar radiofrequency energy (mRFE) during short- to long-term follow-up. METHODS: This study comprised 27 patients who received an arthroscopic mRFE thermal capsulorrhaphy and 10 patients without mRFE treatment serving as the control group. Biopsy samples from 3 locations (anterior-superior, anterior-inferior, and posterior-medial) of the shoulder joint capsule were harvested from both the mRFE-treated patients and the control patients. The follow-up time for the mRFE treatment ranged from 3.5 to 62 months, which was divided into 3 groups: short, 3.5 to 12 months; medium, 14 to 25 months; and long, 31 to 62 months. The biopsy samples were analyzed via a histologic scoring system, evaluating an intact synovial layer, subsynovial edema, collagen morphology, cellularity, vascularity, and inflammatory cells. Histologic scores among each follow-up group were compared with each other and with those in the control group. RESULTS: There were no significant differences in the histologic categories of intact synovial layer, subsynovial edema, collagen morphology, and inflammatory cells among the control and mid- and long-term mRFE groups. The short-term mRFE group had greater increased cellularity and vascularity compared with the mid- and long-term groups, which progressively improved toward the appearance in the normal control group with time. CONCLUSIONS: After mRFE capsulorrhaphy, histologic analysis revealed that the mRFE-treated shoulder joint capsule had almost returned to normal, except for persistent cellularity and increased vascularity, which were present at up to 5 years after this procedure. LEVEL OF EVIDENCE: Level III, therapeutic case-control study.
AI evidence extraction
Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.
Main findings
No significant differences were reported for intact synovial layer, subsynovial edema, collagen morphology, and inflammatory cells between controls and mid-/long-term mRFE groups. The short-term mRFE group showed increased cellularity and vascularity versus mid-/long-term groups, with progressive improvement toward control appearance over time; conclusions note persistent cellularity and increased vascularity up to 5 years.
Outcomes measured
- Histologic morphology/scoring of shoulder joint capsule (intact synovial layer, subsynovial edema, collagen morphology, cellularity, vascularity, inflammatory cells)
Limitations
- Radiofrequency exposure parameters (e.g., frequency, power, SAR) not reported in abstract
- Therapeutic case-control design (Level III)
- Histologic outcomes only; clinical outcomes not described in abstract
View raw extracted JSON
{
"study_type": "case_control",
"exposure": {
"band": null,
"source": "monopolar radiofrequency energy (mRFE) used for arthroscopic thermal capsulorrhaphy",
"frequency_mhz": null,
"sar_wkg": null,
"duration": "follow-up 3.5 to 62 months (short 3.5–12; medium 14–25; long 31–62 months)"
},
"population": "Human patients undergoing shoulder joint capsule biopsy after arthroscopic mRFE thermal capsulorrhaphy; controls without mRFE treatment",
"sample_size": 37,
"outcomes": [
"Histologic morphology/scoring of shoulder joint capsule (intact synovial layer, subsynovial edema, collagen morphology, cellularity, vascularity, inflammatory cells)"
],
"main_findings": "No significant differences were reported for intact synovial layer, subsynovial edema, collagen morphology, and inflammatory cells between controls and mid-/long-term mRFE groups. The short-term mRFE group showed increased cellularity and vascularity versus mid-/long-term groups, with progressive improvement toward control appearance over time; conclusions note persistent cellularity and increased vascularity up to 5 years.",
"effect_direction": "mixed",
"limitations": [
"Radiofrequency exposure parameters (e.g., frequency, power, SAR) not reported in abstract",
"Therapeutic case-control design (Level III)",
"Histologic outcomes only; clinical outcomes not described in abstract"
],
"evidence_strength": "low",
"confidence": 0.78,
"peer_reviewed_likely": "yes",
"keywords": [
"monopolar radiofrequency energy",
"thermal capsulorrhaphy",
"shoulder joint capsule",
"histology",
"cellularity",
"vascularity",
"follow-up"
],
"suggested_hubs": [
{
"slug": "other",
"weight": 0.2,
"reason": "Medical/surgical therapeutic use of radiofrequency energy rather than environmental/consumer EMF exposure"
}
]
}AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.
Identifiers and source
DOI: 10.1016/j.arthro.2007.08.004
PubMed: 18237705
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