TMJ arthroscopy
Dental Procedures
estimated about CNY 15000-40000
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Description
A minimally invasive surgical procedure using an arthroscope to diagnose and treat temporomandibular joint disorders, including adhesions, disc displacement, and synovitis.
Main Uses
Primary clinical uses include: 1) Diagnostic evaluation of persistent TMJ pain, crepitus, locking, or unexplained restricted mouth opening when imaging (MRI) is inconclusive; 2) Therapeutic lavage and debridement for acute or chronic synovitis and adhesions; 3) Disc repositioning and stabilization (e.g., disc plication or suture anchoring); 4) Removal of loose bodies or osteophytes; 5) Biopsy of suspicious synovial or intra-articular lesions; 6) Adjuvant management of refractory internal derangements unresponsive to conservative therapy.
Normal Range
Temporomandibular joint (TMJ) arthroscopy is a surgical diagnostic and therapeutic procedure—not a laboratory test—so it has no numerical 'normal range' or quantitative values. It involves direct visualization of the TMJ using a miniature arthroscope (typically 1.9–2.7 mm diameter) under general or local anesthesia. Normal intraoperative findings include smooth, glistening articular surfaces of the condyle and fossa, intact and centrally positioned disc, minimal synovial fluid (clear, straw-colored, <1 mL), and unrestricted passive joint motion without crepitus or impingement.
Low Values - Possible Causes
N/A — TMJ arthroscopy is not a quantitative test with measurable 'low values'. However, intraoperative findings suggestive of hypomobility or reduced joint space may result from: 1) Advanced disc displacement without reduction, 2) Fibrous or bony ankylosis, 3) Severe osteoarthritis with joint space narrowing, 4) Post-traumatic capsular contraction, 5) Chronic inflammatory synovitis with fibrosis.
High Values - Possible Causes
N/A — TMJ arthroscopy does not yield 'high values'. However, intraoperative observations indicating hypermobility or excessive fluid/structural changes may include: 1) Disc displacement with reduction (often associated with increased joint play), 2) Acute inflammatory synovitis with abundant turbid or bloody effusion (>2–3 mL), 3) Capsular laxity or ligamentous insufficiency, 4) Early-stage internal derangement with disc hypermobility, 5) Iatrogenic over-distension during saline灌注 (e.g., >50–80 mL used for distension).
estimated about CNY 15000-40000