Osteochondromas of the hand in hereditary multiple exostosis: Report of a case presenting as a blocked proximal interphalangeal joint

An Osteochondroma Limiting Flexion of the Proximal Interphalangeal Joint in Hereditary Multiple Exostosis: A Case Report

“…Exostosis that blocks movement of an interphalangeal joint in the hand has been reported in several cases in the past [2][3][4][5][6][7]. The youngest case reported was a 7-month-old boy who was not able to flex the proximal interphalangeal joint by solitary exostosis, as reported by Kojima et al [4].…”

“…However, several authors have stated that involvement of the hand is rare and that proximal phalanges and metacarpals are frequent sites of hand exostoses. Karr et al [3] stated that all hand exostoses located at the distal end of the proximal or middle phalanx will result in rotational or angular deformities if left untreated. On the other hand, Cates and Burgess [1] described that 47 exostoses occurred at the distal end of the proximal or middle phalanx in 22 patients and radiographic rotational or angular deformities developed in only three.…”

Tumours and Tumour-Like Lesions of Bone

“…Trigger finger due to impingement of the flexor tendons by an osteochondroma has been reported (Al-Harthy and Rayan 2003). Growth around a joint may lead to blocking of motion at the joint or a pseudomallet deformity (Karr et al 1984;Murase et al 2002). In children, osteochondroma may be extremely small and difficult to identify as a cause of finger deformity (Moore et al 1983).…”

Surface lesions of the bones of the hand

“…Al-Harthy and Rayan [10] describe a case of a phalangeal osteochondroma as a cause of childhood trigger finger. Further reports describe deformities at the distal interphalangeal joint caused by an osteochondroma mimicking a mallet finger deformity [11] and blocking of movement at the metacarpophalangeal joint and interphalangeal joints [12][13][14]. Moore et al [15] state that in children the tumour may be extremely small and be difficult to identify on radiographs as a cause of finger deformity [15].…”

“…4). Hand involvement in patients with HME is well recognised [14,[16][17][18][19] and has an incidence of 79-85% in patients with HME [16,20]. Multiple lesions are typical, with an average of 11.6 exostoses per hand [16].…”