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Providing adequate protection is a very important component of proper treatment of athletic injuries of the upper extremity. This article reviews the anatomic considerations involved in fabricating splints for various joints of the hand and wrist that will allow the athlete to compete as early as possible while preventing reinjury or permanent disability.
A new splint for the treatment of closed mallet finger injuries is described. This is a modified aluminium-foam ('Zimmer') splint, which takes account of the skin circulation at the distal interphalangeal joint, and is specifically designed to alleviate the potential problems which can be seen with the traditional 'mallet finger' splints.
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Seven patients who presented with complicated acute finger injuries were treated successfully with local transpositional adipofascial flaps. This is a one-stage procedure with advantages of simplicity and rapidity. This flap is thin with good pliability and provides a very versatile and reliable covering for soft-tissue defects of the fingers. Full-thickness skin grafts were applied to the raw surface of the adipofascial flaps in all patients. All cases had excellent wound healing and restored full range of motion. This procedure facilitates early wound healing and early range of motion for finger joints; it also reduces wound pain, minimizes scar formation, and eliminates the need for second-stage surgery.
In this paper, we report on the anatomical study of 34 cadaveric forearms with red latex injection and the clinical application of this study to 11 cases of microsurgical second dorsal metacarpal artery (SDMA) flaps. There were 8 cutaneous cases and 3 tenocutaneous cases using SDMA flaps for distal finger reconstruction. The SDMA was classified into 2 types and 4 subtypes according to its anatomical origin and course. Type I (76.5%) originated from the dorsal branch of the radial artery at the snuffbox. Type II (23.5%) originated from the perforating branch of the deep palmar arch at the bases of second and third metacarpal bones. Diameter of the SDMA was 1.2 +/- 0.2 mm at its snuffbox origin, and 1.0 +/- 0.1 mm at the base of the second and third metacarpal bones. Clinically, microsurgical SDMA free flaps were raised and transferred for repair of finger injuries. Ten flaps survived completely. One flap failed due to thrombosis of vascular anastomosis. In conclusion, the second dorsal metacarpal artery is a constant and reliable vessel for microvascular anastomosis in microsurgical SDMA flap transfer. This flap can be used as an alternative for hand and finger reconstruction, and especially repair of a distal phalanx, when either an orthograde or retrograde island SDMA flap is unable to reach the defect.
Forceful hyperextension of the distal phalanx may result in a Salter II fracture. Due to the anatomic relationship of bone and nail, a 'stubbed finger' injury may result in an inapparent compound fracture. When nail bedding is associated with a distal phalangeal fracture, antibiotics should be instituted.
Incidental occurrence of Parkinson disease following to the history of peripheral trauma was reported in 1932 by Naville and Morsier. So far as we know not more than 50 cases with such an interesting outbreaks have been reported. In Japan no report has been published. We happened to have opportunities to observe five cases of Parkinson disease with similar past history of peripheral trauma comprising two males and three females. Their age at onset ranged from 40 to 74 years and all the five cases had histories of finger injury, including amputation in four cases, followed by insidious onset of tremulous movement at the same site of the trauma during the period between two months and 36 years. So far as we know, no evident explanation is made concerning to the etiological interrelation between onset of Parkinson disease and trauma of the fingers. It appears to be suggestive of the possible mechanism, in which chronic persistent facilitation from the site of trauma up to the diencephalospinal dopamine system, recently advocated by Lindvall and others, result in Parkinson disease beginning at the homolateral site of the previous peripheral trauma.
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Primary nerve repair yields better results than secondary reconstruction but is not always possible. We reviewed a series of 2,181 fresh nerve injuries of the upper limb. One nerve only was injured in 41% of the patients; two or more in 59%. One thousand four hundred eighty-two injuries (68%) were located in the digits. The injured limb segment was lost or beyond repair in 387 cases (18% of all cases). In the 1,794 remaining injuries, primary treatment was accomplished by end-to-end suture 1,568 times (87%) and by graft 33 times (> 2%) and was impossible in 193 cases (11%).
Closed tendon injuries in the hand are common in the athlete. Neglect of such injuries may result in irreparable damage to the hand. Even seemingly minor injuries must be carefully evaluated and treated by a physician. Early diagnosis, accurate and precise treatment, and proper rehabilitation are extremely important to regain optimal function after these injuries. Most of the injuries can be controlled by conservative means. However, when surgical repair is indicated, it is important for the surgeon to be trained and familiar with the anatomy and techniques of surgery of the hand.
The family physician often provides the first and only medical intervention for fingertip injuries. Proper diagnosis and management of fingertip injuries are vital to maintaining proper function of the hand and preventing permanent disability. A subungual hematoma is a painful condition that involves bleeding beneath the nail, usually after trauma. Treatment requires subungual decompression, which is achieved by creating small holes in the nail. A nail bed laceration is treated by removing the nail and suturing the injured nail bed. Closed fractures of the distal phalanx may require reduction but usually are minimally displaced and stable, and can be splinted. Open or intra-articular fractures of the distal phalanx may warrant referral. Patients with mallet finger cannot extend the distal interphalangeal joint because of a disruption of the extensor mechanism. Radiographs help to differentiate between tendinous and bony mallet types. Most mallet finger injuries heal with six to eight weeks of splinting, but some require referral. Flexor digitorum profundus avulsion always requires referral. Dislocations of the distal interphalangeal joint are rare and usually occur dorsally.
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The use of the arterialized venous flap with a palmaris longus tendon transfer has previously been reported. Further trials of this technique were conducted in four patients to reconstruct complicated finger injuries involving loss of skin and extensor tendon. In contrast to the results of previous cases, those of recent cases are more encouraging. This technique may be the procedure of choice in patients with digital skin defects, where there are associated extensor tendon defects with exposed bone.
A novel technique of composite free-flap and tendon transfer is introduced and used in four patients to repair complicated finger injuries involving loss of skin and tendon. This is a one-stage procedure, providing unbulky, high-quality tissue. Although the final range of motion was disappointing, with an average of 10 degrees, there is justification for further clinical trials in patients with loss of skin and tendon in the digits.
Finger joint injuries are the most frequent injuries of the hand. Besides operative and conservative therapy of these injuries, it is even more important to ensure a correct and thorough follow-up treatment. The aim of good rehabilitation is a painless, stabilized joint. Based on the therapeutic guidelines of the department of orthopedics, traumatology, and hand surgery of the Free University Berlin, the rehabilitation of these injuries is discussed.
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