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Mehanizam anatomije šake je složen i bitan je za svakodnevno funkcioniranje. Škljocavi prst (trigger finger) se naziva stenozirajući tenosinovitis odnosno tendovaginitis i javlja se kada se retinakularna ovojnica upali, najčešće je zahvaćena A1 remenica koja se nalazi na glavi metacarpalne kosti. Postoji više mišljenja zašto se javlja škljocavi prst no točna etiologija nije poznata. Škljocavi prst se najčešće javlja od 50. do 60. godine života i češće se može dijagnosticirati kod žena. Zahvaćeni prst je bolan, pokreti su otežani (fleksija i ekstenzija) i u njemu se može osjetiti škljocanje i preskakanje. U djece se javlja slično stanje a to je škljocavi palac, i najbitnije je da se čim prije otkrije kako bi se počelo sa terapijom. Kod liječenja je uvijek prvi izbor konzervativno liječenje (stavljanje udlaga i vježbe), no ako je stanje napredovalo operativni zahvat je neophodan i može se izvoditi kao prekutano otpuštanje ili otvoreno otpuštanje škljocavog prsta. Hand anatomy mechanism is complex and essential for daily functioning. Trigger finger is called stenosing tenosynovitis or tendovaginitis and occurs when the retinacular sheath becomes inflamed, the A1 pulley located on the head of the metacarpal bone is most often affected. There are several opinions as to why a trigger finger occurs, but the exact etiology is not known. Trigger finger most often occurs between the ages of 50 and 60 and can be diagnosed more often in women. The affected finger is painful, movements are difficult (flexion and extension) and you can feel clicking and skipping in it. A similar condition occurs in children, which is a trigger thumb, and the most important thing is to detect it as soon as possible in order to start therapy. When it comes to treatment, the first choice is always conservative treatment (putting on splints and exercises), but if the condition has progressed, surgery is necessary and can be performed as precutaneous release or open release of the trigger finger.

Primarna uloga čitavoga gornjeg ekstremiteta, tj. ramena, nadlaktice, lakta, podlaktice i ručnog zgloba jest postavljanje šake u prikladan položaj za obavljanje nekog rada, a kao krajnji dio ruke istodobno je i osjetni organ. Kompleksna anatomija šake izražava obje funkcije koje su temeljne u čovjekovoj komunikaciji s okolinom. Zbog toga vrlo su učestale akutne ozljede i kronična oštećenja (hrskavica, mišić, tetiva, kost ili živac), odnosno sindromi prenaprezanja u području šake i drugih dijelova gornjeg ekstremiteta. U ovom radu opisani su najučestaliji sindromi prenaprezanja u području šake, ručnog zgloba, podlaktice i lakta s njihovim najkarakterističnijim simptomima te metodama dijagnosticiranja i liječenja., The basic role of the shoulder, upper arm, elbow, forearm, and wrist is to place the hand in the appropriate position, so that it can fulfil its function. The upper extremity, especially the wrist and the hand, has a very complex anatomy with a large number of bones, muscles, tendons and nerves. They are essential to work and sport activities and are subject to acute and/or chronic mechanical injuries. This is why overuse injuries are the most common in these regions. They are often characterised by tendinitis, tenosynovitis, tunnel syndromes, or stress fractures. This paper gives an overview of the most common overuse syndromes of the hand, wrist, forearm and elbow, describing their characteristic symptoms and methods of diagnosis and treatment. The syndromes are trigger finger, dorsal radiocarpal impingement syndrome (gymnastÕs wrist), DeQuervainÕs disease, tenosynovitis of other dorsal compartments, intersection syndrome (oarsman's wrist), flexor carpi ulnaris tendinitis, flexor carpi radialis tendonitis, humeral epicondylitis (tennis elbow), posterior impingement syndrome of the elbow, medial tension and lateral compression syndrome, stress fracture in the hand, wrist, forearm and elbow, and tunnel syndromes.