History and Physical Examination

A thorough history is essential. This should include the patient’s medical and surgical history; medications; allergies; family history; trauma history, including duration of symptoms, location, intensity, and any aggravating or relieving factors; and the effects of various treatment modalities already used. Contact sports and noncontact sports with repetitive activity should be identified. The mechanism of injury should be fully detailed, and specifics such as position of the hand, direction of force, and resultant area of pain should be kept in mind during the diagnostic evaluation.

The patient’s age and sex should be considered when evaluating a painful wrist. The young patient (<40 years) is more prone to post-traumatic carpal injuries, whereas the older patient is more susceptible to the late effects of systemic and degenerative processes. The patient’s medical history and the family medical history are helpful for diagnosing patients with many of the systemic and hereditary disorders that can manifest in the wrist. Laboratory values combined with this history is often helpful in this situation. Knowledge of the effect of the wrist pain on the patient’s daily activities, including work and leisure activities, is also essential for treatment planning.⁴

The physical examination begins with a careful inspection for specific areas of swelling, erythema, warmth, nodules, skin lesions, and obvious deformities or prior surgical incisions. If possible, tenderness is localized to a specific anatomic structure. Wrist range of motion should be examined, paying careful attention to any snapping or clicking. Clicks, which may indicate carpal instability, can sometimes be felt throughout the wrist range of motion but are usually not significant unless they reproduce the patient’s clinical symptoms.

A systematic approach is essential for palpation of the wrist. All joints must be palpated and appropriately stressed with the use of some of the many provocative tests that have been described. Radially, carpometacarpal thumb arthritis can be assessed with the grind test. Just proximal to this, the STT joint should be palpated to assess for arthritis. Anatomic snuff box tenderness may indicate scaphoid or scapholunate ligament pathology. This ligament can be further assessed by Watson’s scaphoid shift test.⁵ The distal pole of the scaphoid is stabilized to restrict palmer flexion while the wrist is moved from ulnar to radial deviation. Dorsal wrist pain indicates subluxation of the scaphoid and scapholunate ligament instability. Ulnarly, lunotriquetral instability can be assessed by manipulating the two bones relative to each other (i.e., shear or ballottement test). Ulnocarpal abutment and triangular fibrocartilage complex (TFCC) tears are tested by axial loading and ulnar wrist deviation. Pain just distal to the ulnar styloid and reproduction of symptoms with this maneuver indicate these conditions.

Instability of the midcarpal joint is suggested by the catch-up clunk, which is produced when the wrist is moved from radial to ulnar deviation during axial loading. The clunk is produced by sudden change in position of the proximal carpal row from a flexed position to an extended position as the triquetrum engages the hamate without the synchronizing effect of the attenuated ulnar ligaments. A painful response or crepitation on compressing the distal radioulnar joint (DRUJ) suggests instability or arthritic changes of the joint. Volarly, tenderness with palpation of the pisiform or hook of the hamate may represent pisotriquetral arthritis or hamate fracture, respectively.⁶

To complete the wrist examination, the tendons are palpated and stressed to rule out tenosynovitis on the dorsal and volar aspects. The nerves are evaluated to rule out compressive neuropathies, and the vascular status is assessed by evaluating capillary refill along with Allen’s test to rule out insufficiency or thrombosis.

Diagnostic Imaging

Unless otherwise indicated by clinical evaluation, the initial radiographic evaluation should consist of standard posteroanterior, oblique, and lateral views of the wrist. They should be examined for bony disruptions such as fractures, alignment and congruence of joint spaces, and evidence of arthritic changes and mineralization. The lateral view is important for assessment of the carpal alignment. A scapholunate angle of greater than 60 degrees suggests possible scapholunate instability, and an angle of less than 30 degrees suggests ulnar-sided wrist instability. Additional radiographs may be needed depending on the clinical scenario. The clenched fist view is valuable for better visualization of possible scapholunate dissociation, and a carpal tunnel view can better elucidate the bony tubercles of the carpal tunnel.

Musculoskeletal ultrasound may be useful for the evaluation of soft tissue abnormalities, such as tendinopathy, ganglia, and synovial cysts. However, it is highly operator dependent.

Arthrography is useful to evaluate the integrity of capsular structures and interosseous ligaments, especially the scapholunate, lunotriquetral, and triangular fibrocartilage (TFC).² It may show localized synovitis or abnormal leaks between normally compartmentalized spaces.

Computed tomography (CT) is useful to evaluate osseous and articular morphology. It is most effective in the evaluation of bone healing in the carpus after fracture or surgery, and CT can provide images in any plane needed (e.g., oblique axis of the scaphoid). Likewise, because fractures of the hook of the hamate are difficult to visualize with plain radiographs, CT provides clear detail to assist with decision making and treatment.⁶

Related posts:

Complications of Elbow Arthroscopy Wrist Arthroscopy: The Future Degenerative Disease of the Metacarpophalangeal and Proximal Interphalangeal Joints Wrist Arthroscopy: Setup, Anatomy, and Portals Osteochondritis Dissecans of the Elbow Injuries to the Triangular Fibrocartilage Complex

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