Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.

[EX Q]: Abstract: Pain thresholds to a pinch stimulus were measured at eight sites on the dorsum of both feet from 17 diabetic patients. Sixteen feet had neuropathic ulcers and seven had Charcot arthropathy. Vibration perception thresholds, radial nerve action potentials, muscle action potentials of flexor digitorum brevis, autonomic cardiovascular reflexes and reflex sweat output were also measured. Pinch pain threshold was abnormal in 15 diabetic feet, 11 having one or more insensitive sites. There was a greater variability in threshold between sites tested in diabetic than control subjects.
[EX A]: A study of pain threshold in diabetics with neuropathic foot lesions.

[EX Q]: Abstract: Sera from 101 patients with progressive systemic scleroderma were analyzed for circulating aminopropeptides of type III collagen using a radioimmunoassay which measures the intact and degraded forms (Fab assay). About 41% of the patients were found to have values above the normal range. A good correlation was observed between elevated levels of aminopropeptides and the degree of involvement of the skin and internal organs in the patients. Most patients (89%) with an active progression of the disease but not those in a stationary phase showed increased serum levels of aminopropeptides. Treatment with corticosteroids apparently normalized the levels of aminopropeptides. Only minor changes were observed with an antibody-based radioimmunoassay which measures primarily the intact form of the aminopropeptide.
[EX A]: Type III collagen aminopropeptide levels in serum of patients with progressive systemic scleroderma.

[EX Q]: Abstract: In this article, we discuss our review of 284 shoulder injuries that were seen and treated arthroscopically during a five-year period. All of the injuries were related to the athletes' particular sport. We describe the biomechanical basis for these injuries and review the data gathered on the forces involved in the act of throwing.
[EX A]:
Mechanisms of shoulder injuries.