A reliable way to palpate lunate and capitate

Anatomical relationship of palmar carpal bone landmarks used in locating the lunate and capitate during palpation: A cadaveric investigation Davis, A., Wilhelm, M., Pendergrass, T., Sechrist, D., Brismée, J., Sizer, P., & Gilbert, K. (2019) Level of Evidence: N/A Follow recommendation: N/A Type of study: Anatomical Topic: Carpal bone landmarks - Cadaveric study This anatomical study performed on 25 cadavers, on average 75 years old, identified four reliable ways of locating the capitate on the palmar aspect of the wrist and one reliable way of determining the position of the lunate on the dorsal aspect of the wrist (all 100% correct). The capitate was located by identifying the midpoint of the line between the scaphoid tubercle/trapezium tubercle and pisiform/hook of hamate. Alternatively, the crossing point between these lines could be used. Lunate was located correctly when the midpoint between the radial and ulnar styloid line was found on the dorsal aspect of the wrist. Clinical Take Home Message: Hand therapists can use the well-defined landmarks of the trapezium and scaphoid tubercle, pisiform, and hook of hamate to identify the position of the capitate palmarly. This may be useful in identifying capitate fractures, which occur in 1.3% of all carpal fractures, and capitate stress fractures occasionally identified in gymnasts. The correct identification of lunate's position may help differentiating between symptomatic presentation of lunotriquetral, scapholunate instability, or Kienböck's Disease. URL: https://www.jhandtherapy.org/article/S0894-1130(17)30323-X/fulltext

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