Extraskeletal chondroma as a cause of carpal tunnel syndrome: a case report.

We report a case of carpal tunnel syndrome as a result of an extraosseous chondroma in a 47-year-old gentleman. This case demonstrates the importance of clinical examination and occasional radiographs in this not uncommon condition. We also highlight that this well known entrapment syndrome is not only caused by the common causes that we all know, but also any space-occupying lesion in the carpal tunnel compressing the median nerve.     

Acute carpal tunnel syndrome: a case report

We describe the development of acute carpal tunnel syndrome in a 53-year-old female following intensive repetitive use of the left wrist for two consecutive days.     

Congenital carpal tunnel syndrome. A case report

A boy with bilateral idiopathic congenital carpal tunnel syndrome was first seen at the age 4 years 6 months. He presented with triggering of the finger flexors at the wrist, abnormal posturing of the fingers and inability to pinch on one side. The triggering was relieved by transection of the transverse retinaculum. Pinch was restored by a tendon transfer. There have been no previous reports of idiopathic carpal tunnel syndrome present since birth. The literature and case are reviewed.     

An unusual cause of carpal tunnel syndrome. Case report.

A 38 year old woman with carpal tunnel syndrome of the right hand was treated with operative decompression, initially successfully. Subsequently, she developed a compartment syndrome after an injury. On re-exploration, an accessory palmaris longus muscle was encasing the median nerve at the distal forearm and passing through the flexor sheath, underneath the flexor retinaculum, inserted into the deep palmar fascia.     

Dermatitis-sympathetic dysfunction in carpal tunnel syndrome. A case report

A 52-year-old woman complained of numbness affecting the thumb, index, and middle fingers of both hands. The patient was managed with night splints with partial relief of symptoms. As a house cleaner, the patient was routinely exposed to water and detergents. About a year later, the patient developed contact dermatitis in the fingertips innervated by the median nerves. Electromyographic studies confirmed the presence of bilateral carpal tunnel syndrome. The temperature of all the fingertips was measured. The median innervated fingertips were warmer than those innervated by the ulnar nerves. The median sympathetic fibers may be compromized by compression in the carpal tunnel. This caused vasodilation, increased finger temperature, and lack of sweating in the median innervated fingers. Due to regular exposure to water and detergents, the susceptible dry fingertips developed contact dermatitis. The patient was managed conservatively, and the rash and numbness disappeared.     

甲状腺机能减退症误诊为腕管综合征1例

患者，女，46岁，因左手麻木无力半年余，右手麻木2个月就诊。患者半年前感左手麻木后逐渐无力，自诉刷牙时需用两手才能握住牙刷。辗转数家医院求治，均诊断为腕管综合征，给予局部封闭、理疗、神经营养药物口服等处理，疗效不佳，有医院拟手术治疗遭患者拒绝。病情进行性加重，近2个月右手出现麻木。患者反应稍迟钝、面色微黄、气短乏力、懒言、畏寒、嗜睡、记忆力减退、脉缓、双侧小腿轻度肿胀。骨科检查：双手正中神经分布区皮肤感觉减退，左手大鱼际轻度萎缩，双侧Tinel征阳性，Phalen实验阳性，膝、跟腱反射迟钝。     

Periosteal chondroma: another cause of carpal tunnel syndrome

Periosteal chondroma has not been previously described as a cause of carpal tunnel syndrome. This report describes a case of periosteal chondroma developing in the floor of the carpal canal and presenting as carpal tunnel syndrome.     

Unusual causes of carpal tunnel syndrome: space occupying lesions

Space occupying lesions found at surgery caused or contributed to carpal tunnel syndrome in 23 of 779 patients operated for carpal tunnel syndrome from January 1999 to December 2008. The mean age of these 23 patients was 52.9 years, and in patients who had a local swelling or palpable mass, ultrasonography or magnetic resonance imaging (MRI) was done. All had open release of the transverse carpal ligament and lesions were removed. Histopathology showed tophaceous gout in 10 men, tenosynovitis in seven patients and tumors in eight. The tumors included ganglion cysts in two, lipoma in three and fibroma of the tendon sheath in one. The neurological symptoms subsided after surgery in all. In patients with gout, one had an infected wound and another had recurrence of symptoms 1 year after later. Carpal tunnel syndrome caused by a space occupying lesion is rare and more complicated than idiopathic carpal tunnel syndrome.     

Acute carpal tunnel syndrome secondary to iatrogenic hemorrhage. A case report

Carpal tunnel syndrome is a common compression neuropathy of the median nerve. Acute carpal tunnel syndrome (aCTS) is rare, associated with a variety of conditions. In this case report we present a patient who developed aCTS and volar forearm compartment syndrome after a radial artery line placement, while receiving intravenous heparin. The patient underwent immediate forearm fasciotomy and surgical release for restoration of nerve function, which resulted in improved hand function and mild residual median nerve neuropathy. There is controversy whether to discontinue or not anticoagulation in a patient with aCTS. In our patient, heparin therapy was restarted on the second postoperative day.     

Bilateral carpal tunnel syndrome after abductor digiti minimi opposition transfer: a case report

We present a case of bilateral, delayed-onset, median nerve compression at the wrist after abductor digiti minimi opposition transfer for thumb hypoplasia. The symptoms resolved on each side after transverse carpal ligament release without disruption of the opposition transfers.     

An unusual cause of acute carpal tunnel syndrome

Acute carpal tunnel syndrome following anticoagulation is uncommon. We describe a case in which the diagnosis was missed on three previous presentations by several clinicians. Although the presentation is typical, lack of awareness of this complication, inability to notice subtle signs and failure to do INR may lead to missing the diagnosis.     

Hypoplastic scaphoid--an unusual cause of carpal tunnel syndrome

A case of median nerve compression within the carpal tunnel, secondary to hypoplasia of the carpal scaphoid and dysplasia of the distal radius, is described in a 15-year-old boy with Spondylo-epiphyseal dysplasia tarda. Hypoplastic carpal bones and a dysplastic distal radius may be a feature of Spondylo-epiphyseal dysplasias, but carpal tunnel syndrome has not been previously reported either in this condition or in association with hypoplasia of the scaphoid.