Based on a comprehensive review of the evidence, including Claimant's testimony, the expert medical opinions, the medical treatment records and the Stipulations for Compromise Settlement between Claimant and Employer in this case and the pre-existing injury, as well as based on my personal observations of Claimant at hearing, I find:
1) Claimant is a 54-year-old bricklayer, tuck-pointer and acid washer, who was employed by Martin C. Heck Brick Contracting (Employer) on or about June 4, 2010. Claimant had been working in this position for Employer for approximately ten years, but was unemployed as of the time of the hearing. Claimant's job duties for Employer included constant and repetitive kneeling, squatting and climbing up and down ladders to perform the bricklaying, tuck-pointing and acid washing.
2) Leading up to June 4, 2010, Claimant developed right knee pain and tenderness when performing his various work activities. He treated with Dr. Stephen Benz (Exhibit C), who diagnosed Claimant with an extensive amount of degenerative arthritis, mostly in the medial compartment of the right knee. On June 4, 2010, Dr. Benz took Claimant to surgery to treat his right knee complaints. He performed a partial right knee replacement (unicondylar knee replacement and Oxford knee).
3) Claimant reported that he continues to have ongoing problems with the right knee since the onset of this condition and his surgical treatment for it. He said that he has pain and swelling in the knee, aggravated by climbing stairs. He reported weakness in the right leg and said that he is unable to squat.
4) Claimant and Employer resolved their portion of this June 4, 2010 case (Injury Number 10-054278) by Stipulation for Compromise Settlement (Exhibit A) for the payment of $\ 23,268.80, or 25 % permanent partial disability of the right knee and 10 weeks of temporary total disability (TTD). The Second Injury Fund Claim was left open on the Stipulation. This Stipulation for Compromise Settlement was approved by Chief Administrative Law Judge Lee B. Schaefer on December 5, 2011.
5) Prior to the June 4, 2010 occupational disease, Claimant sustained a pre-existing injury to his bilateral wrists, resulting in pre-existing disabilities to those body parts.
6) Claimant testified that he suffered an injury on the job for Employer leading up to March 20, 2009. As a result of his hand-intensive, repetitive work activities for Employer as a bricklayer, tuck-pointer and acid washer, he developed bilateral carpal tunnel syndrome and bilateral Guyon's canal syndrome.
7) Claimant treated with Dr. Stephen Benz (Exhibit C), who first tried a period of conservative treatment, which did not alleviate Claimant's complaints. Eventually, he performed surgery on Claimant's right wrist on April 23, 2009 and on Claimant's left wrist on May 5, 2009. He performed carpal tunnel releases and Guyon's canal releases in each wrist, to treat Claimant's bilateral carpal tunnel and Guyon's canal syndromes.
8) Following his wrist treatment and leading up to the time of the June 4, 2010 injury, Claimant reported that he continued to have wrist pain and tingling in his hands.
9) Claimant and Employer resolved their portion of the March 20, 2009 case (Injury Number 09-030821) by Stipulation for Compromise Settlement (Exhibit D) for the payment of $\ 28,500.00, or 17.5 % permanent partial disability of each wrist, with a 10 % load for multiplicity, 2 weeks of disfigurement and $\ 426.71 in past temporary total disability (TTD) benefits. This Stipulation for Compromise Settlement was approved by Administrative Law Judge John A. Tackes on June 22, 2010.
10) Claimant was examined by Dr. Shawn Berkin (Exhibit B) on June 22, 2011 at the request of his attorney for an independent medical examination. Dr. Berkin issued his report on August 22, 2011, following his physical examination and his review of the medical treatment records. Medically causally related to Claimant's work activities for Employer leading up to June 4, 2010, Dr. Berkin diagnosed overuse syndrome of the right leg with traumatic tendinitis of the right knee, status post partial right knee replacement. Dr. Berkin assessed permanent partial disability for Claimant's primary right knee and pre-existing bilateral wrist injuries/conditions. He opined that the preexisting disabilities represent a hindrance or obstacle to employment or reemployment. Finally, he opined that the combination of the disabilities creates a significantly greater disability than the simple sum or total of each separate injury/illness, and so a loading factor should be applied.
11) Claimant testified that the combination of the injuries made it more difficult for him