One hundred five patients (70% female and 30% male; average age, 48 years) with 132 symptomatic heels were treated according to a standard nonoperative protocol and then reviewed at an average follow-up of 29 months. The treatment protocol consisted of nonsteroidal anti-inflammatory medications, relative rest, viscoelastic polymer heel cushions, Achilles tendon stretching exercises, and, occasionally, injections. Obesity, lifestyle (athletic versus sedentary), sex, and presence or size of heel spur did not influence the treatment outcome. Ninety-four patients (89.5%) had resolution of heel pain within 10.9 months. Six patients (5.7%) continued to have significant pain, but did not elect to have operative treatment, and five patients (4.8%) elected to have surgical intervention. Despite attention to the outcome of surgical treatment for heel pain in the current literature, initial treatment for heel pain is nonoperative. The treatment protocol used in this study was successful for 89.5% of the patients.

Distal clavicle resection has been an effective procedure for treatment of acromioclavicular arthritis. The conventional open surgical technique involves deltoid detachment and reattachment, which may cause postoperative weakness and requires protection during the postoperative period to allow for healing. Arthroscopic acromioclavicular joint resection has the theoretical advantages of no deltoid disruption and a shorter rehabilitation period. The purpose of this study was to compare open versus arthroscopic acromioclavicular joint resection in a laboratory setting. The goals of acromioclavicular joint resection in this study were to remove 5 mm of the medial acromion and 10 mm of the distal clavicle. Acromioclavicular joint resections were performed on 10 cadaver shoulders (5 open resections and 5 arthroscopic resections). Open resection was successful at 10 of 15 distal clavicle locations and 14 of 15 medial acromial locations. Arthroscopic resection was successful at 14 of 15 distal clavicle locations and 10 of 15 medial acromial locations. The combined bone resection averaged 14.8 mm (+/- 1.99 mm) for the open technique and 14.8 mm (+/- 2.58 mm) for the arthroscopic technique. The combined bone resection was 1.5 cm or more in all of the measured locations for the open technique and in 14 of 15 measure locations for the arthroscopic technique. There was no statistically significant difference between the two groups. In the laboratory setting, acromioclavicular joint resection was performed effectively and predictably with arthroscopic instruments. Arthroscopic bone resection was comparable to open bone resection.

Background: Immunological responses to proteins that adhere to ultra-high molecular weight polyethylene have not, to our knowledge, been examined previously in patients who have aseptic loosening. In the current study, polyethylene components from fortynine failed prostheses recovered during revision procedures were examined for the presence of antibodies that were bound to the polyethylene surface or that were reactive with other proteins that were bound to the polyethylene surface. Methods: The polyethylene components consisted of thirty acetabular cups recovered during revision total hip arthroplasties and nineteen tibial components recovered during revision total knee arthroplasties. After extensive washing, bound proteins were extracted from the polyethylene components with use of 0.1molar glycine-hydrogen chloride solution followed by four-molar guanidine hydrochloride solution. Results: Sufficient protein for analysis was recovered from forty-two polyethylene components. Polyacrylamide gel electrophoresis demonstrated a minimum of one and a maximum of twelve protein bands, with molecular weights ranging from thirteen to 231 kilodaltons. Immunoblotting revealed the presence of type-I collagen in most (thirty-four) of the forty-two explants, whereas aggrecan proteoglycans were detected in eight samples. Immunoglobulin also was detected in most (thirty-three) extracts, whereas type-II collagen was consistently absent. The presence of autologous antibodies directed against polyethylenebound proteins in sera drawn at the time of the revision was investigated. Antibodies that were reactive against the ultra-high molecular weight polyethylene-bound

No abstract

Fifteen patients (19 feet) who underwent simultaneous surgical excision of two primary interdigital neuromas in adjacent web spaces of the foot were studied retrospectively. There were 11 female patients (73%). The average age of the patients was 54.4 years. Other causes of multiple web space tenderness were excluded prior to surgical resection of both neuromas. At an average follow-up of 68.6 months (range, 32-113 months), 10 feet (53%) had complete resolution of symptoms and six feet (31%) had minimal residual symptoms. Three feet in two patients (16%) continued to have significant pain after surgery. One sequela of the procedure was dense sensory loss of the plantar aspect of the third metatarsal head to the tip of the third toe. There was also proximal dorsal sensory loss to the second, third, and fourth toes which was a function of the type of incision used. The sensory loss did not cause disability in the patients, but did cause some awkwardness with nail care. Resection of adjacent interdigital neuromas, although rarely indicated, can be expected to provide significant pain relief in 84% of patients, which is similar to results reported for resection of a single neuroma.