Patient histories that include wrist pain can be pivotal in the distinction between intersection syndrome (IS) and the more common de Quervain's tenosynovitis (DQT). Presented here is a 26-year-old pregnant woman with a history of rowing who developed left radial/dorsal wrist pain and a rubbing/squeaking sensation. Nine months of conservative DQT therapy and a landmark-guided corticosteroid injection failed to relieve her symptoms. An in-clinic ultrasound showed tenosynovitis at the intersection of the first and second compartments, confirming a diagnosis of IS. She found immediate relief with ultrasoundguided saline hydrodissection, the injection of saline into the intercompartmental space to reduce adhesions. Both DQT and IS are overuse injuries caused by repetitive wrist extension, as occurs in rowing, and either condition can worsen after pregnancy. Distinguishing the subtleties between DQT and IS can be challenging. Close attention to the patient's description of the pain can guide treatment, potentially expediting recovery. In addition, saline hydrodissection can be both a diagnostic tool and a potentially therapeutic alternative to steroid injections for such tendinopathies. Wrist pain can account for as much as 20% of musculoskeletal complaints in the ambulatory care setting.1 Among the more prevalent diagnoses are tendinopathies of the thumb and wrist, including de Quervain's tenosynovitis (DQT) and intersection syndrome (IS). 1 While the initial management for both conditions can be similar, understanding their subtle differences may lead to faster recovery and less risk of complications at subsequent visits if initial management should fail. Clues from the patient history can be pivotal in the distinction between IS and the more common DQT. In refractory cases or those in which steroid injections may not be favored, saline hydrodissection (injection of saline into the intercompartmental space to reduce adhesions) may present a diagnostic and therapeutic alternative.
Case PresentationA pregnant 26-year-old woman whose dominant hand is the left hand presented to primary care with a complaint of progressively worsening left wrist pain for the past few weeks. She described a constant, dull ache that had since developed intermittently sharp, shooting pains up her forearm, radiating from a focus just proximal to the metacarpals along the dorsal aspect. She added that there is a "rubbing/friction sensation" over the point of maximum tenderness. She was 16 weeks into an uncomplicated pregnancy. While in college she was an avid rower, which involved frequent flexion and extension of her left wrist against the resistance of the oar. This dull ache was familiar. However, the sharp shooting pains were different. She had a new hobby baking cupcakes, which required frequently lifting large bags of flour.Her initial wrist examination revealed no swelling, deformities, or ecchymosis. She had tenderness over the distal aspect of the left radius 2 to 4 cm This article was externally peer reviewed.