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Results for “Pisiform Bone”

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At least 73 records · Page 4Linked to original sources
PubMed1982

Pisiform area pain treatment by pisiform excision.

Thirty-three patients with pisiform area pain have been treated. Of these, the pisiform bone was excised in 21 patients who had intractable pisiform bone pain that was not relieved by the conservative methods of immobilization, local steroid injection, and anti-inflammatory medication. The indications for excision were painful union or nonunion of pisiform fractures, pisiform-triquetrial arthritis, and tendonitis of the flexor carpi ulnaris (FCU) insertion. Wrist strength and mobility was maintained by doing a subperiosteal dissection and removal of the pisiform bone. This technique preserves the insertion of the FCU tendon and its distal extension, the piso hamate and the piso metacarpal ligaments.

Adult↗
PubMed1988

[Pisotriquetral osteoarthritis].

Isolated osteoarthritis of the pisotriquetral joint is rare and can be as disabling as osteoarthritis of any other joint. The authors report on two cases, one in both hands. With typical anamnesis, exact clinical investigation, proper positioning during radiological examination and intraarticular application of anaesthetics, the diagnosis can be easily confirmed. If conservative therapy is unsuccessful, relief of pain can be obtained by excision of the pisiform bone. The biomechanical importance of the pisiform bone in its relation to the flexor carpi ulnaris is discussed.

Aged↗
PubMed1982

[Chronic ulnocarpal calcareous bursitis].

There are reported three cases of nodular calcifications of the ulnocarpal region with very similar clinical and radiological aspects. The isolated nodules or the double, contigue one, are located near the pisiform bone, proximal to it, in the obliqual palmo-dorsal projection with semisupine hand. These nodules are projected on the ulnar styloid with the dorso-palmar projection. Clinical-radiological characteristics suggest a diagnosis of chronic bursitis that corresponds with the insertion on the pisiform bone of the flexor carpi ulnaris tendon. Differential diagnosis faces, besides the calcification in the tendinous sheths, also the accessory pisiform bone and the flake fractures, not joined, of the pisiform.

Adult↗
PubMed2000

Flexor muscle incursion into the carpal tunnel: a mechanism for increased carpal tunnel pressure?

PURPOSE: To explore the hypothesis that the extrinsic finger flexor muscles have the potential to move into the proximal end of the carpal tunnel with wrist extension. METHODS: The most distal muscle fibres from the deep and superficial finger flexors were measured relative to the pisiform bone in 18 cadaveric specimens. Muscle excursions during wrist extension were calculated using regression equations previously reported in the literature. RESULTS: The mean distances from the pisiform were 9.3 and 4.9 mm for the deep and superficial flexors, respectively. Ten flexor muscle bellies were at the level of or distal to the pisiform bone in the anatomical position, while 17 of 36 were within 5 mm. DISCUSSION: The excursions expected with wrist extension indicate that many muscles have the potential to enter the carpal tunnel, especially those within 5 mm of the pisiform bone. Comparing the expected excursions to recent pressure data, corroborating support for the pressure increase is found. CONCLUSION: Although not directly measured, the results of this study indicate incursion of the flexor muscles into the carpal tunnel space, particularly with wrist extension, is a plausible mechanism for increased carpal tunnel pressure. RELEVANCE: Proposing a mechanism by which carpal tunnel pressure is elevated during wrist and finger extension is a stepping stone to determining the etiology of the disease itself. Finding that the flexor muscle bellies appear to enter the carpal tunnel with wrist extension indicates that use of the flexor muscles should be avoided when the wrist and fingers are extended.

Aged↗